Syntheses, crystal structures and biological relevance of glycolato and S-lactato molybdates
作者： Zhao-Hui Zhou , Shu-Ya Hou , Ze-Xing Cao , Hui-Lin Wan , Seik-Weng Ng
DOI: 10.1016/J.JINORGBIO.2004.02.024
关键词: Medicinal chemistry 、 Molybdate 、 Denticity 、 Oxidation state 、 Glycolic acid 、 Chelation 、 Moiety 、 Chemistry 、 Crystal structure 、 Stereochemistry 、 Molybdenum 、 Inorganic chemistry 、 Biochemistry
摘要: Glycolato and S -lactato complexes containing the dioxomolybdenum(VI) moiety have been synthesized for studies on role of α-hydroxycarboxylato anion in iron molybdenum cofactor nitrogenase. The ligands these complexes, vis K 2 [MoO (glyc) ] · H O (H glyc=glycolic acid, C H 4 3 ) ( 1 {Na -lact) ]} · 13H lact=lactic 6 chelate through their α-alkoxyl α-carboxyl oxygen atoms. In contrast, octanuclear [(MoO 8 (Hglyc) ] · 10H formed by reduction glycolato complex ), features three different ligand binding modes: (i) non-bridging bridging bidentate coordination groups, (ii) using group, leaving group free. skeleton shows strong metal–metal interactions. modes mimic that homocitrate to (FeMo-co) groups bond Mo is less susceptible oxidation state compared with Mo-α-alkoxyl bond. This supported dinuclear free molybdate(V) ).
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