Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
New Chiral Diphosphines, 2,3-Bis(siloxy)-1,4-bis(diphenylphosphino)butanes, and Their Cationic Rh(I) Complexes: Synthesis and Structures
Kohei TamaoKazunori NakamuraShigehiro YamaguchiMotoo ShiroSeiki Saito
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1996 Volume 25 Issue 11 Pages 1007-1008


A series of 2,3-bis(siloxy)-1,4-bis(diphenylphosphino)butanes SILOPs, possessing various siloxy groups, and their Rh(I) complexes have been prepared. The X-ray structure of a SILOP shows a staggered conformation with two siloxy groups in the anti positions. The X-ray crystal structure of a cationic Rh(I)-SILOP complex, however, shows an anti arrangement of not the two siloxy groups but the two silyl groups with respect to the O–O axis, which reinforces the C2-symmetrical environment around the metal center.

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© 1996 The Chemical Society of Japan
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