SYNTHESIS, MULTINUCLEAR NMR, AND SOLUTION CONFORMATION OF (ETA-5-INDENYL)COIRFL COMPLEXES (L = CO, P-DONOR)

The preparation, spectroscopic characterization, and conformational analysis of a series of Co(III) indenyl complexes, (C9H7)CoIRfL (R(f) = C3F7, C6F13, L = CO, P-donor), 2-8, are described. C-13 and H-1 NMR parameters are consistent with a slightly distorted eta5-C9H7 coordination. H-1 nuclear Overhauser effect difference (nOed) spectra indicate a preferred solution conformation in which the perfluoroalkyl group is trans to the C3a-C-7a ring junction.