Anion control of isomerism, crystal packing and binding properties in a mononuclear zinc complex
| Autor: | Patrick T. Gunning, Arkady Ellern, Margaret Nutley, Paul Kögerler, John Fielden, De-Liang Long, Leroy Cronin |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Chemistry Ligand Inorganic chemistry chemistry.chemical_element Isothermal titration calorimetry Zinc Crystal engineering Coordination complex Inorganic Chemistry Crystallography Materials Chemistry Amino acid binding Physical and Theoretical Chemistry Trifluoromethanesulfonate Histidine |
| Zdroj: | Polyhedron. 25:3474-3480 |
| ISSN: | 0277-5387 |
| Popis: | The coordination chemistry of the tetradentate pyridyl N-donor ligand cis-3,5-bis-[2-pyridinyleneamin]-trans-hydroxycyclohexane (DDOP) has been investigated with zinc(II) nitrate and triflate. The resulting complexes, [Zn(DDOP)(H2O)(NO3)](NO3) (1), and [Zn(DDOP)(H2O)(OTf)](OTf) (2) differ not only in their counterions, but also the arrangement of the axial ligands and their solid state hydrogen bonded networks. Isothermal titration calorimetry was used to assess the difference in binding properties exhibited by the two zinc complexes at physiological pH in an aqueous environment. A series of coordinating amino acids were found to preferentially bind to the mononuclear zinc triflate (1) complex over the corresponding nitrate (2) assembly, with histidine exhibiting a two centre binding mode. |
| Databáze: | OpenAIRE |
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