Ready Cage Exchange Reactions of Icosahedral Hydridophoshinorhodacarbaboranes.
Abstract
Four coordination sites of formally six coordinate Rh(III) complexes have been replaced in facile, single-step thermal reactions. Several reports have appeared concerning thermal ligand exchange reactions of ferrocene related complexes, arene chromium tricarbonyl complexes, and photolytic exchanges using eta to the 5th power-(C5H5)2MC1n(m=v,Ti,Zr,Hf;n=0,1,2). Most of the thermal reactions seem to require vigorous conditions and the yields are in general rather low, However, Khan and Dormond have recently reported facile, thermal exchange of cyclopentadienyl rings in certain Ti complexes. In the course of our studies on homogeneous alkene hydrogenation catalyzed by phosphino-metallocarbaboranes we have discovered a general and facile method for transferring the (PPh3)2Rh fragment form one carbaborange cage to another.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 1980
- Accession Number
- ADA086759
Entities
People
- Judith Long
- M. Frederick Hawthorne
- Todd B. Marder
Organizations
- University of California, Los Angeles