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Formation of Doubly Vinyl‐Bridged Binuclear Iridium Complexes by C‐H Activation
Author(s) -
Nessel Angelika,
Nürnberg Oliver,
Wolf Justin,
Werner Helmut
Publication year - 1991
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199110061
Subject(s) - iridium , chemistry , stereochemistry , terminal (telecommunication) , coordination sphere , crystallography , polymer chemistry , catalysis , crystal structure , organic chemistry , telecommunications , computer science
A terminal CH bond in H 2 CCH t Bu can be cleaved with, for example, Na 2 CO 3 /EtOH as base in the coordination sphere of an Ir center, leading to [{CH 2 (C 5 H 4 ) 2 }{Ir 2 (μ‐CHCH t Bu) 2 }] ( 1 ), a complex with an extremely short IrIr bond. Unusual are the + 2 oxidation state of the two Ir atoms, the bridging through three organic ligands, and the absence of terminal ligands. A similar structure to that of 1 , although without CH 2 bridges between the Cp rings, is shown on the right.