Multi-metal Molybdenum Phosphates And Metal Carboxylates Synthesis And Characterization

In this paper, five novel complexes based on molybdenum phosphates and benzenetricarboxylate (H2en)5[CoMo12O5oP8(OH)12]-2H2O(1), (H2en Me)4(H3O)[Ni(enMe)2] [Na3Mo12O52P8(OH)10] 5H2O(2),(H2enMe)4(H3O) [ Cu(enMe)2][Na3Mo1O52P8(OH)10]-5H2O(3),{[Co(H2O)2][Co2(phen)2 (btc) 2]}n (4) and [Ni0.5(C13H15N2O4)(H2O)]-H2O (5), have been hydrothermally synthesized through modifying synthetic conditions and starting materials. Structures of the five complexes have been determined by single crystal X-ray diffraction and characterized by elemental analysis, IR, ESR, XPS, and thermal analysis. The structure of 1 consists of molybdenum hexamers which are bonded together by transition metal to form a dimer. It is noteworthy that compound 1 exhibits a novel 3-D structure constructed through hydrogen bonds. Compound 2 and compound 3 are isostructural. 2 and 3 are built on Mo6P4 clusters linked through Na+ into a one-dimensional chain, and then, adjacent chains are connected by transition metal coordination complexes to form a two-dimensional window-like infinite network. Compound 4 exhibits an unusual 2-D (4,6)-lattice-type network constructed by the [Co2(phen)2(btc)2]2- dimers and [Co(H2O)2]2+ units. As for Compound 5, four basic units link to each other form an approximately parallelogrammic pore, which constructed a 2-D covalent bond double-layers network.