Abstract  Heterometallic complexes with pyridine-N-oxide (PyO), Ru(NO)(NO2)(4)(OH)Ni(PyO)(2)(H2O)] center dot CH3COCH3 (I), [{Ru(NO)(NO2)(2)(mu-NO2)(2)(mu-OH)Co}(2)(mu-PyO)] center dot H2O center dot CH3COCH (II), and [Ru(NO)(NO2)(4)(OH)Cu(PyO)(2) (III), are isolated in the reactions of Na-2[Ru(NO)(NO2)(4)(OH)] with nitrates of the corresponding metals in the presence of the organic ligand. The compounds synthesized are characterized by IR spectra, thermal analysis, and X-ray diffraction analysis. Depending on the M2+ cation, the ruthenium cation is coordinated through the bidentate (III, Cu2+) or tridentate (I, Ni2+ and II, CO2+) mode involving the bridging OH group and one or two NO2 groups. The thermal decomposition of complex II results in the formation of a Co0.5Ru0.5 solid solution, which is thermodynamically stable under the decomposition conditions. The thermolysis of complexes I and III in a hydrogen atmosphere leads to the formation of metastable solid solutions.

Abstract  Poultry rendering emissions contain aldehydes that are reactive and regulated volatile organic compounds requiring mitigation. This research presents an application of catalytic oxidation technology to treat aldehydes at room temperature using ozone as an oxidant and metal oxides deposited on activated carbon as catalysts. Four types of catalysts were tested: activated carbon, activated carbon impregnated with iron oxide, and activated carbon electrochemically deposited with nickel and cobalt oxides. Iron oxides were deposited on activated carbon via traditional dry impregnation, while nickel and cobalt were deposited on activated carbon via electrochemical deposition. The prepared catalysts' activities were tested in a continuous differential packed-bed reactor, using an ozone generator and gas chromatography. Propanal (50 to 250 ppmv) was tested as a representative contaminant, and ozone (1500 ppmv) was used as art oxidant. Experiments with activated carbon as a catalyst indicated that 70% removal was achieved within 0.1 s residence time, and the oxidation rates of propanal were determined to be in the range of 90 x 10(-9) to 300 x 10(-9) mol/g-s. However, when iron oxide-deposited activated carbon was tested for propanal oxidation, the oxidation rates decreased significantly (7 x 10(-9) to 60 x 10(-9) mol/g-s), probably due to the clogging of the micro- and meso-pores of the activated carbon support with iron oxide particles. When the electrochemically deposited nickel and cobalt oxide catalysts were tested, propanal oxidation rates increased by 20% to 25%. Based on the preliminary results, electrochemical deposition on activated carbon appears to be a valuable tool in synthesizing advanced catalysts for use in air pollution remediation.

Abstract  Effect of doping by cobalt on gas sensing, electrophysical and structural properties of the SnO2 films was studied. Undoped and doped SnO2 films were deposited by spray pyrolysis method on alumina, silicon and quartz substrates kept at 410-450 degrees C. The film structure was controlled by XRD and SEM methods. Ozone and hydrogen were used as tested gases. It was found that the influence of doping by cobalt on the SnO2-based gas sensor parameters depends on the concentration of doping additives and could be accompanied by either improvement of sensor parameters at low level of doping (C-Co < 2-4%) or degradation of the gas sensor operation characteristics while concentration of additives exceeds 2-4%. It was given an explanation of observed effects. In particular, it was shown that structural changes caused by incorporation of cobalt in the SnO2 lattice was the main factor, controlling the change of the SnO2 gas sensing properties during the process of the SnO2 bulk doping. (C) 2013 Elsevier B.V. All rights reserved.

Abstract  The effects of surface-modified carbon black induced by UV/ozone and triethylenetetramine on the microstructure and electrochemical properties of ink-jet-printed LiCoO(2) electrodes for lithium ion batteries are observed. The dispersion properties of surface-modified carbon black and LiCoO(2) ink are evaluated using particle size distribution measurements, surface pressure calculations, and scanning electron microscopy. Modifications to the surface of carbon black result in improved dispersion properties, which in turn enhance the compactness and homogeneity of the microstructure of ink-jet-printed LiCoO(2) electrodes compared to those printed with as-received carbon black. Electrochemical experiments indicate that LiCoO(2) electrodes ink-jet-printed with surface-modified carbon black exhibit improved initial specific discharge capacities compared to those printed with as-received carbon black due to the better electrical contact between the carbon black and the LiCoO(2), as evidenced by the analysis of the area-specific impedance of the electrode as a function of the depth of discharge. (C) 2011 Elsevier BM. All rights reserved.

Abstract  For regulatory oversight and quality control of Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) actions, fish, mussels, and sediments were analyzed from the Peconic River system on Long Island, NY, downstream of the Brookhaven National Laboratory, as well as from control locations. The analyses were for photon-emitting radionuclides (notably Co-60 and Cs-137), uranium, plutonium, and americium. Sediments were cored in 4 sections to 0.37 rn depth, whole fish were analyzed, and mussels were separated into flesh and shells. Radioisotopes of the cited elements were detected in sediment, some of the fish contained Cs-137, Am-214, and uranium, and mussel flesh contained Cs-137 and uranium. All of the Co-60, U-233, and enriched uranium, and some of the Cs-137 and Am-241, can most likely be attributed to Brookhaven National Laboratory. The other radionuclides (and some of the Cs-137 and Am-241) are believed to have either fallout or nature as their origin. The New York State Department of Health (NYSDOH) evaluated the radiological data in terms of adverse health implications due to consumption of fish with the levels of reported radioactivity. The NYSDOH determined that the added radiation doses likely to result from eating this fish are a small fraction of the radiation dose that normally results from radionuclides present in the body from natural sources.

Abstract  A novel thiosemicarbazone from 2-acetonaphthone (represented as acnTSC) has been synthesized and its basic coordination chemistry with zinc(II), cobalt(II), and copper(II) explored. The complexes were characterized by elemental analysis and various spectroscopic techniques and are best formulated as [M(acnTSC)(2)Cl(2)] with the metal likely in an octahedral environment. The anticancer activity of the complexes was determined against a panel of human colon cancer cells (HCT-116 and Caco-2). The compounds bind to DNA via an intercalative mode with binding constants of 9.7 × 10(4) M(-1), 1.8 × 10(5) M(-1), and 9.5 × 10(4) M(-1) for the zinc, cobalt, and copper complexes, respectively.

Abstract  A highly ordered TiO(2) nanotubes (NT(s)) array was grown on Ti substrate by anodization method in HF-H(3)PO(4) electrolyte. The morphology and microstructure of TiO(2) NT(s) were investigated by scanning probe microscope (SPM), scanning electron microscope (SEM) and X-ray diffraction (XRD). It was found that anatase phase of TiO(2) prevailed with an average inner pore diameter of about 110 nm. The applicability of TiO(2) NT(s) arrays to dye sensitized solar cells (DSSC(s)) using different metal phthalocyanine dyes was studied in dark and under illumination. The photoelectrochemical properties of the prepared TiO(2) electrodes under different conditions were investigated using I-V characteristic curves. Interesting results were obtained using cobalt phthalocyanine (CoPC) dye sensitized nanotubular TiO(2) solar cell under optimized conditions which showed good conversion efficiency (0.17 %) under illumination of 100 mW cm(-2) with good stability for many turnovers.

Abstract  Titanium dioxide (M-TiO2), which was doped with 13 different metal ions (i.e., silver (Ag+), rubidium (Rb+), nickel (Ni2+), cobalt (Co2+), copper (Cu2+), vanadium (V3+), ruthenium (Ru3+), iron (Fe3+), osmium (Os3+), yttrium (Y3+), lanthanum (La3+), platinum (Pt4+, Pt2+), and chromium (Cr3+, Cr6+)) at doping levels ranging from 0.1 to 1.0 at. %, was synthesized by standard sol-gel methods and characterized by X-ray diffraction, BET surface area measurement, SEM, and UV-vis diffuse reflectance spectroscopy. Doping with Pt(IV/II), Cr (III), V(III), and Fe(III) resulted ill a lower anatase to rutile phase transformation (A-R phase transformation) temperature for the resultant TiO2 particles, while doping with Ru(III) inhibited the A-R phase transformation. Metal-ion doping also resulted in a red shift of the photophysical response of TiO2 that was reflected in an extended absorption ill the visible region between 400 and 700 nm. In contrast, doping with Ag(I), Rb(I), Y(III), and La(III) did not result in a red shift of the absorption spectrum of TiO2 As confirmed by elemental composition analysis by energy dispersive X-ray spectroscopy, the latter group Of ions was unable to be substituted for Ti(IV) in the crystalline matrix due to their incompatible ionic radii. The photocatalytic activities of doped TiO2 samples were quantified in terms of the photobleaching of methylene blue, the oxidation of iodide (I-), and the oxidative degradation of phenol in aqueous solution both under visible-light irradiation (lambda > 400 nm) and Under broader-band UV-vis irradiation (lambda > 320 nm). Pt- and Cr-doped TiO2, which had relatively high percentages of rutile in the particle phase, showed significantly enhanced visible-light photocatalytic activity for all three reaction classes.

Abstract  TiO2 thin films were prepared by direct current magnetron sputtering on glass substrates, then were implanted by cobalt ions, and finally annealed at 500 degrees C for 50 min. Specimens for transmission electron microscopy were prepared by peeling- scattering technology, and were observed in situ by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and high resolution transmission electron microscopy (HRTEM). The films were identified as anatase structure. The Co ions exist mainly in a thin layer beneath the surface of the films. The implanted Co ions damage the TiO2 crystals and some of them exist as CoO. The annealing treatment could repair the TiO2 grains and make the Co ions diffuse into the TiO2 lattice. The vibrating sample magnetometer (VSM) measurements show that the Co ion implanted TiO2 films are ferromagnetic at room temperature and the annealing treatment in vacuum could enhance the ferromagnetism, which could be explained within the scope of the BMP theory.

Abstract  A single molecular heterobimetallic complex, [Co2Ti(mu 3-O)(TFA)6(THF)3] (1) [TFA?=?trifluoroacetate, THF?=?tetrahydrofuran], was synthesized, structurally and spectroscopically characterized and implemented as a single-source precursor for the preparation of CoTiO3CoO composite thin films by aerosol-assisted chemical vapour deposition (AACVD). The precursor complex was prepared by interaction of Co(OAc)2.4H2O [OAc?=?(CH3COO-)] with Ti(iso-propoxide)4 in the presence of trifluoroacetic acid in THF, and was analysed by melting point, CHN, FT-IR, single-crystal X-ray diffraction and thermogravimetric analysis. The precursor complex thermally decomposed at 480 degrees C to give a residual mass corresponding to a CoTiO3CoO composite material. Good-quality crystalline CoTiO3CoO composite thin films deposited at 500 degrees C by AACVD and characterized through powder X-ray diffraction and scanning electron microscopy/energy-dispersive X-ray spectroscopy show that the crystallites have a rose-flower-like morphology with an average petal size in the range of 26 mu m. Copyright (C) 2012 John Wiley & Sons, Ltd.

Abstract  Effects of Ru promoted cobalt oxide nanoparticles on gamma-Al2O3 supported catalysts were studied for Fischer-Tropsch reaction. Homogeneously sized cobalt oxide nanoparticles with the different amount of ruthenium promoter were prepared by solvothermal method using oleic acid as capping agent. Pre-synthesized CoRuOx nanoparticles were then impregnated on gamma-Al2O3 support to prepare 5CoxRu/100Al(2)O(3) catalysts (5CoxRuAl), with the amount of ruthenium x = 0 to 0.1. The catalysts were characterized by XRD, TEM, TPR, EDX, H-2 chemisorption and O-2 titration methods and compared with the catalyst prepared by conventional impregnation method, i.e. i-5Co0.05RuAl. Interestingly, catalysts prepared by nanoparticle impregnation method showed higher H-2 uptake and better reducibility with the concomitant increase in the activity due to the homogeneous dispersion of the Ru promoter across entire the nanoparticles as compared to the catalyst prepared by conventional impregnation method. The intimate contact between cobalt and ruthenium enhanced the site density of cobalt which was responsible for the promotional results in the case of 5CoxRuAl catalysts. (C) 2011 Elsevier B.V. All rights reserved.

Abstract  A new potentiometric thiocyanate-selective membrane sensor based on salicyladehyde-o-aminophenol binuclear copper (II) [Cu-2(II)-SOA] complex as a neutral carrier is reported, which displays a preferential potentiometric response to thiocyanate ion and an anti-Hofmeister selectivity sequence in the following order: SCN- > Sal(-) > ClO4- > I- > NO2- >Br- > Cl- > NO3- > SO32- > H2PO4- > SO42-. The sensor exhibits a near-Nernstian potential over a wide linear range of 6.0x 10(-7) - 1.0x 10(-1) M with a detection limit of 2.0x 10(-7) M and a slope of-56.2 mV/decade in pH 4.0 of a phosphate buffer solution at 20 degrees C.

Abstract  The compounds [Zn-II{C6H4(NH2)(2)}(2)(NO3)(2)], (1) and [Cd-II{C6H4(NH2)(2)}(2)(NO3)(2)] (2) have been prepared (C6H4(NH2)(2) = orthophenylenediammine = opda) and characterized by routine spectroscopic methods and single crystal X-ray diffraction analysis. Compound 1 crystallizes in orthorhombic space group Pcab, where as compound 2 crystallizes in monoclinic space P2(1)/n. In the crystal structure of 1 an extended hydrogen bonding network is formed involving zinc coordinated amines and nitrato ligands. The compound 2 consists of molecules in which the cadmium ion is eight coordinated, with. two bidentate nitrate groups and two bidentate opda ligands. The geometry around the cadmium described as a distorted dodecahedron. The crystal structure of 2 shows an intricate hydrogen bonding network, formed by amine and nitro groups coordinated to cadmium.

Abstract  Transition metal complexes [Co(cyclen)(NH(3))(2)](ClO(4))(3)H(2)O (cyclen=1,4,7,10-tetraazacyclododecane) (2), [Co(NH(3))(5)(OH(2))](CF(3)SO(3))(3) (3) [Ni(NH(3))(6)]Br(2) (4) and [Ru(NH(3))(6)]Cl(3) (5) were tested against Sindbis infected baby hamster kidney (BHK) cells and show differential effects from the previously reported anti-viral complex [Co(NH(3))(6)]Cl(3) (1). The macrocyclic complex 2 and labile aqua complex 3 show either no or little effect on the survival on Sindbis virus-infected cells as compared to that for 1, which show a monotonic increase in % BHK cell survival. Nickel and ruthenium ammine complexes 4 and 5 had a moderate influence of cell survival. While the results showed some anti-viral activity for some of the structural variations, it appears that 1, with its potential to be a broad-spectrum anti-viral compound, occupies a unique position in its ability to both significantly enhance cell survival and to decrease viral expression of infected cells. We also show that 1 also shows anti-viral activity against Adenovirus lending support to the broad-spectrum potential of this complex.

Abstract  The novel glycosyl saccharide derivative, (D-glucopyranose)-4-phenylthiosemicarbazide (LH) and its complexes, with cobalt(II), nickel(II), copper(II) and zinc(II) were synthesized, characterised and tested for cytotoxic effects. The copper complex, [CuLCl] inhibited Ehrlich Ascites Carcinoma (EAC) induced cancer cell lines in Swiss albino mice at LC50=1.94 x 10(-8) (LC50=2.76 x 10(-8) for cisplatin) and so distinctly better than free ligand and other complexes.

Abstract  N-myc downstream regulated gene 1 (NDRG1)/Cap43 is a 43 kDa protein that is widely distributed in the body. Its expression is regulated by nickel, cobalt, hypoxic condition and others; it is reported to be weaker in tumors than normal tissues; and NDRG1/Cap43 is considered to act suppressively to tumor metastasis. This current study immunohistochemically examined NDRG1/Cap43 expression in hepatocellular carcinoma (HCC), and analyzed its relationship to clinicopathologic factors and prognosis. The samples were 105 surgically resected HCC tissue blocks, i.e., 18 well-differentiated HCC, 61 moderately differentiated HCC, 10 poorly differentiated HCC, 9 'nodule-in-nodule' type HCC, and 7 sarcomatous HCC. In all cases, NDRG1/Cap43 was not expressed in normal liver cells. Strong expression was found in 65 of the 105 cases (62%), i.e., in 11.1% of well-differentiated HCC, 72.1% of moderately differentiated HCC, 80.0% of poorly differentiated HCC, and 71.4% of sarcomatous HCC. In the 'nodule-in-nodule' type, its expression was found in 55.6% of their well-differentiated component, and this frequency was significantly higher than that in well-differentiated HCC (11.1%). In the cases showing strong NDRG1/Cap43 expression, frequency of portal vein invasion and of intrahepatic metastasis was significantly high. No clear relationship between the expression and prognosis was observed. NDRG1/Cap43 expression that was found in advanced HCC was thought to accelerate tumor invasion and metastasis. NDRG1/Cap43 could act as a useful biomarker of HCC.

Abstract  A series of metal complexes of cobalt(II), nickel(II) and copper(II) have been synthesized with newly derived biologically active ligands. These ligands were synthesized by the condensation of 3-substituted-4-amino-5-hydrazino-1,2,4-triazole and 8-formyl-7-hydroxy-4-methylcoumarin. The probable structure of the complexes has been proposed on the basis of elemental analyses and spectral (IR, Uv-Vis, magnetic, ESR, FAB-mass and thermal studies) data. Electro chemical study of the complexes is also reported. All these complexes are non-electrolytes in DMF and DMSO. All the ligands and their Co(II), Ni(II) and Cu(II) complexes were screened for their antibacterial (Escherichia coli, Staphylococcus aureus, Staphylococcus pyogenes and Pseudomonas aeruginosa) and antifungal (Aspergillus niger, Aspergillus flavus and cladosporium) activities by MIC method. The brine shrimp bioassay was also carried out to study their in vitro cytotoxic properties.

Abstract  Some isatin derived sulfonamides and their transition metal [Co(II), Cu(II), Ni(II), Zn(II)] complexes have been synthesized and characterized. The structure of synthesized compounds and their nature of bonding have been inferred on the basis of their physical (magnetic susceptibility and conductivity measurements), analytical (elemental analyses) and spectral (IR, (1)H NMR and (13)C NMR) properties. An octahedral geometry has been suggested for Co(II), Ni(II) and Zn(II) and square-planar for Cu(II) complexes. In order to assess the antibacterial and antifungal behavior, the ligands and their metal(II) complexes were screened for their in vitro antibacterial activity against four Gram-negative species, Escherichia coli, Shigella flexneri, Pseudomonas aeruginosa and Salmonella typhi and two Gram-positive species, Staphylococcus aureus and Bacillus subtilis and, for in vitro antifungal activity against Trichophyton longifusus, Candida albicans, Aspergillus flavus, Microsporum canis, Fusarium solani and Candida glaberata. In vitro cytotoxic properties of all the compounds were also studied against Artemia salina by brine shrimp bioassay. The results of average antibacterial/antifungal activity showed that zinc(II) complexes were found to be the most active against one or more bacterial/fungal strains as compared to the other metal complexes.

Abstract  Bis(3-methylbutantio) maleonitril has been obtained from the reaction of disodium salt, 1-bromo-3 methylbutan in acetone under nitrogen for 11 hours. MgPz has been synthesized through the cyclotetramerization reaction of magnesium and n-butanol with bis(3-methylbutantio) maleonitril. The metal free pophyrazine derivative was obtained by its treatment with trifluroacetic acid and further reaction of this product with cobalt(H) acetate, nickel(II) acetate and zinc(II) acetate led to the metal porphyrazine (MPz, M = Co, Ni ve Zn). These new compounds have been investigated and characterized by UV, FT-IR, H-1 NMR, GC-MS and elemental analysis methods.

Abstract  Metal-substituted blue copper proteins (cupredoxins) have been successfully used to study the effect of metal-ion identity on their active-site properties, specifically the coordination geometry and metal-ligand bond strengths. In this work, low-temperature (77 K) resonance Raman (RR) spectra of the blue copper protein Alcaligenes xylosoxidans azurin I and its Ni(II) derivative are reported. A detailed analysis of all observed bands is presented and responsiveness to metal substitution is discussed in terms of structural and bonding changes. The native cupric site exhibits a RR spectrum characteristic of a primarily trigonal planar (type 1) coordination geometry, identified by the nu(Cu-S)(Cys) markers at 373, 399, 409, and 430 cm(-1). Replacement of Cu(II) with Ni(II) results in optical and RR spectra that reveal (1) a large hypsochromic shift in the main (Cys)S --> M(II) charge-transfer absorption from 622 to 440 nm, (2) greatly reduced metal-thiolate bonding interaction, indicated by substantially lower nu(Ni-S)(Cys) stretching frequencies, (3) elevation of the cysteine nu(C( beta )-S) stretching, amide III, and rho (s)(C( beta )H(2)) scissors vibrational modes, and (4) primarily four-coordinated, trigonally distorted tetrahedral geometry of the Ni(II) site that is marked by characteristic nu(Ni-S)(Cys) stretching RR bands at 347, 364, and 391 cm(-1). Comparisons of the electronic and vibrational properties between A. xylosoxidans azurin I and its closely structurally related azurin from Pseudomonas aeruginosa are made and discussed. For cupric azurins, the intensity-weighted average M(II)-S(Cys) stretching frequencies are calculated to be nu(Cu-S)(iwa) = 406.3 and 407.6 cm(-1), respectively. These values decreased to nu(Ni-S)(iwa) = 359.3 and 365.5 cm(-1), respectively, after Ni(II) --> Cu(II) exchange, suggesting that the metal-thiolate interactions are similar in the two native proteins but are much less alike in their Ni(II)-substituted forms.

Abstract  The serum levels of copper, zinc, iron, manganese, nickel, cadmium, cobalt, sodium, potassium, calcium, and magnesium were determined in seven different breeds of dogs: Pointer, Poodle, Setter, Labrador Retriever, Golden Retriever, German Shepherd, and Mallinois. Only slight variations were found among the different breeds, and the results presented in this study can be used for laboratory studies in veterinary science.

Abstract  Both the X-ray structures of the apo- and the copper-bound forms of the metal-sensor domain (residues 31-148) of CnrX from Cupriavidus metallidurans CH34 were obtained at 1.74A resolution from a selenomethionine derivative. This four-helix hooked-hairpin is the first structure of a metal-sensor in an ECF-type signaling pathway. The copper ion is bound in a type 2-like center with a 3N1O coordination in the equatorial plane and shows an unprecedented remote fifth axial ligand with Met93 contributing a weak S-Cu bond. The signal onset cannot be explained by conformational changes associated with CnrX metallation.

Abstract  The reaction of cobalt(II) chloride with a new class of thiosemicarbazones viz; cis-3,7-dimethyl-2,6-octadienthiosemicarbazone(CDOTSC; L(1)H) and 3,7-dimethyl-6-octenethiosemicarbazone (DOTSC; L(2)H) and N-phthaloyl derivative of DL-glycine(A(1)H), L-alanine(A(2)H) or L-valine(A(3)H) in 1:1:1 molar ratio in dry refluxing ethanol have been studied. All the isolated complexes have the general composition [Co(L)(A)]. Tentative structures are proposed for these complexes based upon elemental analysis, electrical conductances, magnetic moment, molecular weight determination and spectral (IR, electronic) studies.The ligands and Co(II) complexes have been tested for their antibacterial and antifungal activities against three bacterial strains S. aureus, B. subtilis, E. coli and two fungal strains F. moniliformae and M. phaseolina. Attempts have been made to establish a correlation between the antibacterial and antifungal activity and the structures of products.

Abstract  Complexes of the type [M(pabh)(H2O)Cl], [M(pcbh)(H2O)Cl] and [M(Hpabh)(H2O)2 (SO4)] where, M = Mn(II), Co(II), Ni(II), Cu(II) and Zn(II); Hpabh = p-amino acetophenone benzoyl hydrazone and Hpcbh = p-chloro acetophenone benzoyl hydrazone have been synthesized and characterized with the help of elemental analyses, electrical conductance, magnetic susceptibility measurements, electronic, ESR and IR spectra, thermal (TGA & DTA) and X-ray diffraction studies. Co(II), Ni(II) and Cu(II) chloride complexes are square planar, whereas their sulfate complexes have spin-free octahedral geometry. ESR spectra of Cu(II) complexes with Hpabh are axial and suggest d(x(2)-y(2) as the ground state. The ligand is bidentate bonding through > C = N--and deprotonated enolate group in all the chloro complexes, whereas, >C = N and >C = O groups in all the sulfato complexes. Thermal studies (TGA & DTA) on [Cu(Hpabh)(H2O)2(SO4)] indicate a multistep decomposition pattern, which are both exothermic and endothermic in nature. X-ray powder diffraction parameters for [Co(pabh)(H2O)Cl] and [Ni(Hpabh)(H2O)2(SO4)] correspond to tetragonal and orthorhombic crystal lattices, respectively. The ligands as well as their complexes show a significant antifungal and antibacterial activity. The metal complexes are more active than the ligand.