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Structural Characterization of (Arylimido)vanadium(V) Compounds with 2,6‐Difluorophenoxide Ligand
Author(s) -
Moriuchi Toshiyuki,
Sakuramoto Takashi,
Nishina Masafumi,
Kawai Ryota,
Hirao Toshikazu
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201700205
Subject(s) - vanadium , chemistry , ligand (biochemistry) , crystallography , trigonal bipyramidal molecular geometry , crystal structure , bridging ligand , stereochemistry , dimer , inorganic chemistry , receptor , organic chemistry , biochemistry
The (arylimido)vanadium(V) compound, [( p ‐MeOC 6 H 4 N)V(O i Pr) 3 ] was demonstrated to undergo ligand exchange reaction with one or two equivalents of 2,6‐difluorophenol, affording the (arylimido)vanadium(V) compounds, [( p ‐MeOC 6 H 4 N)V(O i Pr) 2 (O‐2,6‐F 2 Ph)] and [( p ‐MeOC 6 H 4 N)V(O i Pr)(O‐2,6‐F 2 Ph) 2 ]. Their X‐ray crystallographic analyses elucidated the μ‐isopropoxido‐bridged dimeric structures, wherein each vanadium atom has a trigonal‐bipyramidal arrangement with the imido and bridging isopropoxide ligands in the apical positions. The isopropoxide ligand was selectively employed as a bridging ligand between two central vanadium atoms. On the other hand, the reaction of the (arylimido)vanadium(V) compound, [( p ‐MeOC 6 H 4 N)VCl 3 ] and three equivalents of lithium 2,6‐difluorophenoxide gave the (arylimido)vanadium(V) compound, [( p ‐MeOC 6 H 4 N)V(O‐2,6‐F 2 Ph) 3 ]. In the crystal packing, the thus‐obtained compound showed a distorted trigonal‐bipyramidal environment at the vanadium atoms with the μ‐phenoxido‐bridged dimeric structure, wherein the 2,6‐difluorophenoxide ligand was found to serve as a bridging ligand.