R.C. Smith et al. / Journal of Organometallic Chemistry 690 (2005) 477–481
481
nyl-substituted 1. The Ph2P analogue may therefore
Acknowledgements
have more ready access to smaller bond angles (to-
wards 90°) that may be necessary for the intermediates
involved in effective catalysis. NMR data for 1 suggest
fluxional processes that are in accord with the motions
depicted in Fig. 3 [26]. Compound 1 may thus be an
example of a trans-spanning ligand capable of reaching
a angles needed for coupling catalysis. More work is
needed to support this hypothesis.
The authors thank Case Western Reserve University
Department of Chemistry and the National Science
Foundation (CHE-0202040) for support.
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