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Unusual B 4 N 2 C 2 Ligand in a Ruthenium Pseudo‐Triple‐Decker Sandwich Complex Displaying Three Reversible Electron‐Transfer Steps
Author(s) -
Ly Hanh V.,
Tuon Heikki M.,
Parvez Masood,
Roesler Roland
Publication year - 2007
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.200703556
Subject(s) - ruthenium , ligand (biochemistry) , delocalized electron , triple bond , electron transfer , ring (chemistry) , chemistry , cyclic voltammetry , crystallography , stereochemistry , photochemistry , double bond , polymer chemistry , catalysis , organic chemistry , electrochemistry , biochemistry , receptor , electrode
Open, sesame : The reaction of a heterobicyclic pentalenediyl‐like Me 2 Ph 4 B 4 N 2 C 2 dianion with [{(C 5 Me 5 )RuCl} 4 ] cleaves the NN bond of the ligand and affords a pseudo‐triple‐decker sandwich complex containing a B 4 N 2 C 2 middle deck (see picture). This eight‐membered ring features nearly linear B‐N‐B moieties and brings the ruthenium centers unusually close. Cyclic voltammetry indicates efficient electron delocalization over the framework.