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Bis(silylenyl)‐ and Bis(germylenyl)‐Substituted Ferrocenes: Synthesis, Structure, and Catalytic Applications of Bidentate Silicon(II)–Cobalt Complexes
Author(s) -
Wang Wenyuan,
Inoue Shigeyoshi,
Enthaler Stephan,
Driess Matthias
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.201202175
Subject(s) - silylene , phenylacetylene , cyclopentadienyl complex , ferrocene , denticity , cobalt , chemistry , cycloaddition , catalysis , combinatorial chemistry , medicinal chemistry , stereochemistry , silicon , crystal structure , crystallography , organic chemistry , electrochemistry , electrode
Strong bite : The two respective Si II and Ge II centers in ferrocene‐containing bis(silylene) and bis(germylene) ligands 1 can serve as excellent σ donors, as shown in the formation of Co complexes 2 (see scheme, Cp=η 5 ‐cyclopentadienyl). Unexpectedly, only the bis(silylene)–Co complex 2 is a precatalyst for the [2+2+2] cycloaddition of phenylacetylene and MeCN, possibly because of a stronger coordination of the Ge II donor centers to Co.