SYNTHESIS AND CHARACTERIZATION OF E-ALPHA,BETA-UNSATURATED AND Z-ALPHA,BETA-UNSATURATED ACYL COMPLEXES [(ETA-5-C5H5)FE(CO)(PPH3)(COCH=CHR)](R=H,ME,ET,NORMAL-BU,TERT-BU,PH,VINYL,2-FURYL) - Davies, S; Easton, R; Walker, J; Warner, P (1986)