Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10574285 | Journal of Inorganic Biochemistry | 2005 | 9 Pages |
Abstract
A group of four binuclear sulfur-bridged molybdenum-polycarboxylato complexes with homocitrate, citrate, cysteine, ethylenediaminetetraacetate ligands, respectively, have been synthesized and characterized. These complexes were prepared in order to study the interaction of Mo and homocitrate in the FeMo-co of nitrogenases. In the structures of K4(NH4)2[Mo2O2S2(C6H4O7)2] · 10H2O (2), (NH4)2[Mo2O2S2(C3H5SNO2)2] · 5H2O (3) and (NH4)2[Mo2O2S2(C10H12N2O8)] · 3.5H2O (4), molybdenum (V) atom adopts a distorted octahedral arrangement through a terminal oxygen atom, two bridging sulfur atoms and three atoms from the ligand (hydroxyl, α-, β-carboxylates, sulfide or amine). The coordination mode of homocitrate ligand in K5(NH4)[Mo2O2S2(C7H5O7)2] · 3H2O · CH3OH (1) has been proposed in a tridentate fashion via its hydroxyl and a pair of carboxylate groups (α-, β-carboxylates). The electrochemical properties of these complexes have been discussed.
Related Topics
Physical Sciences and Engineering
Chemistry
Inorganic Chemistry
Authors
Dong-Mei Li, Yong-Heng Xing, Zeng-Chun Li, Ji-Qing Xu, Wen-Bo Song, Tie-Gang Wang, Guang-Di Yang, Ning-Hai Hu, Heng-Qing Jia, Hong-Min Zhang,