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Expedient Synthesis of a Metallostibine Os 2 (CO) 8 (µ‐SbPh): An Unusual and Strong Two‐Electron‐Donor Ligand
Author(s) -
Li YingZhou,
Ganguly Rakesh,
Leong Weng Kee
Publication year - 2017
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.201700456
Subject(s) - chemistry , lone pair , ligand (biochemistry) , lewis acids and bases , crystallography , cluster (spacecraft) , yield (engineering) , electron , atom (system on chip) , electron donor , trigonal crystal system , stereochemistry , crystal structure , molecule , organic chemistry , catalysis , biochemistry , materials science , receptor , physics , quantum mechanics , computer science , embedded system , metallurgy , programming language
A metallostibine, Os 2 (CO) 8 (µ‐SbPh) ( 2 ), was generated readily and in high yield and purity from the Os 3 (CO) 11 (µ‐SbPh)(Cl) 2 ( 1 ) cluster through elimination of the terminal Os(CO) 3 (Cl) 2 Lewis acid fragment with activated γ‐alumina. Compound 2 is air sensitive in solution but relatively stable as a solid. The Sb atom in 2 adopts a trigonal pyramidal geometry in both the solid and solution states, with an active lone pair of electrons. Experimental and computational studies show that 2 is a strong two‐electron donor with a donor strength comparable to that of alkylphosphines.