New Zinc Phosphates Decorated by Imidazole-Containing Ligands
| Autor: | Ross J. Angel, Brian E. Hanson, Jian Fan, Carla Slebodnick |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Inorganic Chemistry. 44:552-558 |
| ISSN: | 1520-510X 0020-1669 |
| Popis: | Four new zinc phosphates [Zn(HPO 4 )(C 6 H 9 N 3 O 2 )] (1), [Zn(HPO 4 )(C 4 H 6 N 2 )].H 2 O (2), [Zn 2 (HPO 4 ) 2 (C 1 4 H 1 4 N 4 )].2H 2 O (3), and [Zn(HPO 4 )(C 1 4 H 1 4 N 4 )] (4) were synthesized in the presence of D-histidine, 1-methylimidazole, 1,4-bis-(imidazol-1-ylmethyl)benzene (L1), and 1,2-bis(imidazol-1-ylmethyl)benzene (L2), respectively, and their structures were determined by X-ray crystallography. The inorganic framework of compounds 1, 2, and 3 is composed of vertex-shared ZnO 3 N and HPO 4 tetrahedra that form four rings, which, in turn, are linked to generate a one-dimensional ladder structure. In 1 and 2 the organic groups (monoimidazole ligand) are located at each side of the ladders, while in 3 the bisimidazole ligand, 1,4-bis(imidazol-1-ylmethyl)benzene, links the ladders together to form a novel 2D structure. Compound 1 is the first zinc phosphate framework to be templated by an N-bonded chiral amino acid. In 4 the zero-dimensional four rings are joined together by the linear bridging ligand, 1,2-bis(imidazol-1-ylmethyl)benzene, to generate a one-dimensional framework with a new face-to-face structural motif. The 3D structure of compound 4 is stabilized by hydrogen-bonding, π-π interactions, and C-HJr interactions. The approach of incorporating multifunctional ligands into zinc phosphate frameworks and linking the inorganic zinc phosphates subunits by an organic ligand provides opportunities for the design of new inorganic-organic open frameworks. |
| Databáze: | OpenAIRE |
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