847359-62-0Relevant academic research and scientific papers
New zinc phosphates decorated by imidazole-containing ligands
Fan, Jian,Slebodnick, Carla,Angel, Ross,Hanson, Brian E.
, p. 552 - 558 (2005)
Four new zinc phosphates [Zn(HPO4)(C6H 9N3O2)] (1), [Zn(HPO4)(C 4H6N2)]·H2O (2), [Zn 2(HPO4)2(C14H14N 4)]·2H2O (3), and [Zn(HPO4)(C 14H14N4)] (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 ZnO3N and HPO4 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-H...π 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.
