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New Routes to Alkylidyne‐Bridged Ditungsten Compounds Supported by Alkoxide or Siloxide Ligands by the Activation of Ethylene
Author(s) -
Chacon Stephanie T.,
Chisholm Malcolm H.,
Cook Cindy M.,
HampdenSmith Mark J.,
Streib William E.
Publication year - 1992
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.199204621
Subject(s) - chemistry , alkoxide , ethylene , carbyne , ligand (biochemistry) , bridging ligand , stereochemistry , crystallography , crystal structure , biochemistry , catalysis , carbene , receptor
The signals of six nonequivalent siloxy ligands in the NMR spectrum confirm among other things the existence of one hydrido and one bridging 2‐butenylidene ligand in complex 1 . It is very likely that the hydrido ligand is terminally bonded to W2, even though there is also evidence of an exchange process between the siloxy and hydrido ligands. Complex 1 , whose central framework is shown here, was also characterized by X‐ray crystallography.