Premium
Synthesis and Structures of Mono‐ and Dinuclear Molybdenum Complexes with Reduced α‐Diimine Ligands
Author(s) -
Zhao Yanxia,
Xue Yurong,
Xu Wenhua,
Su JiHu,
Wu Biao,
Yang XiaoJuan
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600999
Subject(s) - diimine , chemistry , molybdenum , ligand (biochemistry) , crystallography , triple bond , bond length , chelation , metal , stereochemistry , nuclear magnetic resonance spectroscopy , electron paramagnetic resonance , coordination complex , medicinal chemistry , crystal structure , inorganic chemistry , double bond , polymer chemistry , organic chemistry , biochemistry , receptor , physics , nuclear magnetic resonance , catalysis
The mononuclear molybdenum complex [Mo( H L) 2 ] ( 1 ), Mo–Mo single‐bond compound [ H LClMo(µ‐Cl) 3 Mo H LCl] [ 2 ; Mo–Mo 2.832(7) Å], and Mo≡Mo triple‐bond compounds [Mo 2 Cl 2 (µ‐ H L) 2 ] [ 3 ; Mo–Mo 2.194(6) Å] and [Mo 2 Cl 2 (µ‐Cl)(µ‐ H L)Cl 2 Na(THF) 3 ] [ 4 ; Mo–Mo 2.167(2) Å] have been synthesized by the reaction of H L { H L = [(2,6‐ i Pr 2 C 6 H 3 )NCH] 2 } with 0.5, 1, and 2 equiv. of MoCl 5 and different amounts of Na metal. In the single‐bond compound 2 , the α‐diimine ligand H L displays the normal chelating coordination mode. In contrast, the triple‐bond compounds 3 and 4 feature the less common bridging mode of α‐diimine ligands. Complexes 1 – 4 have been characterized by X‐ray diffraction, 1 H and 13 C NMR, IR spectroscopy, elemental analysis, and their electronic structures were studied by EPR and DFT computations.