Pentafluorophenylcobalt(II) complexes

Complexes (C6F5)2CoL2 (L2 = 2 PEt3, 2 P-Bu3, 2 PPh3, Ph2PCH2CH2PPh2) have been obtained by adding the relevant ligands to solutions of (C6F5)2Co(dioxane)2. The cis and trans isomers have been separated and identified for the complexes having L = PEt3 or PnBu3. Structural and chemical behaviour for all the complexes is described.We greatly appreciate the award of a Research Fellowship (to A.V.) by the Ministerio de Educación y Ciencia (Spain)