Chemistry and Physics Faculty Articles
Title
Intermediates in the Catalytic Dehydrogenative Coupling of Arylgermanes
Document Type
Article
Publication Date
1997
Publication Title
Chemistry: A European Journal
Keywords
Dehydrogenative coupling, Germanium, Platinum, Reaction mechanisms, Structure elucidation
ISSN
0947-6539
Volume
3
Issue/No.
11
First Page
1793
Last Page
1796
Abstract
The use of a new electron-withdrawing germane, H2Ge[3,5-(CF3)2C6H3]2 (3), has facilitated the isolation and characterization of three new complexes implicated in the dehydrogenative coupling of bisarylgermanes by Pt0-phos-phane complexes. The intermediates include a digermyl species, trans-[(Et3P)2Pt{GeH(Ar)2}2] (7), a bound digermane showing the first stage of Ge-Ge catenation, cis-[(Et3P)2Pt(H){Ge(Ar)2-GeH(Ar)2}] (8), and the Ge-H activated form of this product, [(Et3P)2HPtGe(Ar)2-Ge(Ar)2PtH(PEt3)2] (6). Complexes such as 6 and 8 have not previously been isolated as intermediates in dehydrogenative coupling reactions. An X-ray crystal structure was determined for complex 6, confirming the cis geometry of the hydrogen and germanium ligands; this provides yet another example of the stability of germyl hydrides towards reductive elimination. A similar cis geometry was observed for complex 8. Performing the dehydrogenative coupling reaction under a CO2 atmosphere failed to yield any products containing trapped germylene species.
NSUWorks Citation
Bender, J. E., Litz, K. E., Giarikos, D., Wells, N. J., Banaszak, M. M., & Kampf, J. W. (1997). Intermediates in the Catalytic Dehydrogenative Coupling of Arylgermanes. Chemistry: A European Journal, 3, (11), 1793 - 1796. https://doi.org/10.1002/chem.19970031110. Retrieved from https://nsuworks.nova.edu/cnso_chemphys_facarticles/58
DOI
10.1002/chem.19970031110
Comments
©WiLEY-VCH Verlag GmbH, 69451 Weinheim 1997