Anion binding by metallo-receptors of 5,5'-dicarbamate-2,2'-bipyridine ligands
Wu, B; Yang, J; Huang, X; Li, S; Jia, C; Yang, XJ; Tang, N; Janiak, C
HERO ID
899875
Reference Type
Journal Article
Year
2011
Language
English
PMID
| HERO ID | 899875 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Anion binding by metallo-receptors of 5,5'-dicarbamate-2,2'-bipyridine ligands |
| Authors | Wu, B; Yang, J; Huang, X; Li, S; Jia, C; Yang, XJ; Tang, N; Janiak, C |
| Journal | Dalton Transactions (Online) |
| Volume | 40 |
| Issue | 21 |
| Page Numbers | 5687-5696 |
| Abstract | Three 5,5'-dicarbamate-2,2'-bipyridine ligands (L = L(1)-L(3)) bearing ethyl, isopropyl or tert-butyl terminals, respectively, on the carbamate substituents were synthesized. Reaction of the ligands L with the transition metal ions M = Fe(2+), Cu(2+), Zn(2+) or Ru(2+) gave the complexes ML(n)X(2)·xG (1-12, n = 1-3; X = Cl, NO(3), ClO(4), BF(4), PF(6), ½SO(4); G = Et(2)O, DMSO, CH(3)OH, H(2)O), of which [Fe(L(2))(3) ⊃ SO(4)]·8.5H(2)O (2), [Fe(L(1))(3) ⊃ (BF(4))(2)]·2CH(3)OH (7), [Fe(L(2))(3) ⊃ (Et(2)O)(2)](BF(4))(2)·2CH(3)OH (8), [ZnCl(2)(L(1))][ZnCl(2)(L(1))(DMSO)]·2DMSO (9), [Zn(L(1))(3) ⊃ (NO(3))(2)]·2H(2)O (10), [Zn(L(2))(3) ⊃ (ClO(4))(Et(2)O)]ClO(4)·Et(2)O·2CH(3)OH·1.5H(2)O (11), and [Cu(L(1))(2)(DMSO)](ClO(4))(2)·2DMSO (12) were elucidated by single-crystal X-ray crystallography. In the complexes ML(n)X(2)·xG the metal ion is coordinated by n = 1, 2 or 3 chelating bipyridine moieties (with other anionic or solvent ligands for n = 1 and 2) depending on the transition metal and reaction conditions. Interestingly, the carbamate functionalities are involved in hydrogen bonding with various guests (anions or solvents), especially in the tris(chelate) complexes which feature the well-organized C(3)-clefts for effective guest inclusion. Moreover, the anion binding behavior of the pre-organized tris(chelate) complexes was investigated in solution by fluorescence titration using the emissive [RuL(3)](2+) moiety as a probe. The results show that fluorescent recognition of anion in solution can be achieved by the Ru(II) complexes which exhibit good selectivities for SO(4)(2-). |
| Doi | 10.1039/c0dt01561j |
| Pmid | 21327244 |
| Wosid | WOS:000290869400007 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957471857&doi=10.1039%2fc0dt01561j&partnerID=40&md5=7ab971a8fcc76e7f5df98769d45b60d8 |
| Is Public | Yes |
| Language Text | English |
| Keyword | Anion binding; Bipyridine ligands; Bipyridines; Fluorescence titrations; Fluorescent recognition; Hydrogen bondings; Reaction conditions; Single crystal X-ray crystallography; Chelation; Copper; Fluorescence; Hydrogen bonds; Metal ions; Negative ions; Transition metal compounds; X ray crystallography; Zinc; Ligands; 2,2' bipyridine; 5,5' dicarbamate 2,2' bipyridine; 5,5'-dicarbamate-2,2'-bipyridine; anion; carbamic acid derivative; coordination compound; drug derivative; ligand; article; chemistry; conformation; nuclear magnetic resonance spectroscopy; X ray crystallography; 2,2'-Dipyridyl; Anions; Carbamates; Coordination Complexes; Crystallography, X-Ray; Ligands; Magnetic Resonance Spectroscopy; Molecular Conformation |
| Is Qa | No |