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Dinuclear Metalloradicals Featuring Unsupported Metal–Metal Bonds
Author(s) -
van der Eide Edwin F.,
Yang Ping,
Walter Eric D.,
Liu Tianbiao,
Bullock R. Morris
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201203531
Subject(s) - delocalized electron , unpaired electron , metal , electron delocalization , chemistry , crystallography , atom (system on chip) , bridging (networking) , metallic bonding , unobservable , inorganic chemistry , materials science , molecule , organic chemistry , computer network , epistemology , computer science , embedded system , philosophy
No support required : Unlike the unobservable radical cations [{CpM(CO) 3 } 2 ] .+ (M=W, Mo), derivatives [{CpM(CO) 2 (PMe 3 )} 2 ] .+ are stable enough to be isolated and characterized. Experimental and theoretical studies show that the shortened MM bonds are of order 1 1/2, and that they are not supported by bridging ligands. The unpaired electron is delocalized over the MM cores, with a spin density of about 45 % on each metal atom.