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Structural comparison to the molybdenum site of nitrogenase. Synthesis and crystal structure of binuclear oxomolybdenum(V) complex with both o ‐mercaptophenolate and alkoxide ligands
Author(s) -
Hu YongHan,
Kang BeiSheng,
Chen XueTai,
Huang LiangRen,
Weng LingHong,
Xu YongJin
Publication year - 1993
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19930110206
Subject(s) - chemistry , octahedron , molybdenum , monoclinic crystal system , crystallography , nitrogenase , denticity , crystal structure , ligand (biochemistry) , alkoxide , stereochemistry , group (periodic table) , inorganic chemistry , catalysis , nitrogen , receptor , nitrogen fixation , biochemistry , organic chemistry
Complex ( n ‐Bu 4 N)[Mo 2 O 2 (OMe)(mp) 3 ] [1, mp = ( o ‐OC 6 H 4 S) 2 −] was synthesized by the reaction of MoOCl 3 (THF) 2 and Na 2 mp in EtOH and crystallized in monoclinic space group P 2 1 / n with crystal data: a = 13.910(3), b = 23.554(3), c =12.558(2) Å, β = 105.20(2) ˙ . Z = 4, D o = 1.455g/ cm 3 , final R = 0.077 for 5325 reflections [ I >3s̀(I)]. The two [Mo(O)mp]+ moieties are bridged by one 1,2‐bidentate ligand mp 2− with exceedingly small bite angle (69.0 ˙ ) and bite distance · (2.70Å) and by a methoxy group. The structure can be interpreted as two distorted octahedra around the Mo atoms sharing a face. Attempts have been made to provide structural informations for the syntheses of modelling compounds of FeMoco by comparing the Mo—O and Mo—S bond distances of o ‐mercaptophenolate ligated compounds to those of the molybdenum site of nitrogenase.