Preparation of Complexes Formed in the Reaction Between Dicobaltoctacarbonyl and Tetraalkyldiphosphine Disulfides, R2P(S)P(S)R2 (R = Me, Et, N-Pr, N-Bu)

Co 2 (CO) 8 and R 2 P(S)P(S)R 2 (R = Me, Et, n-Pr, n-Bu) react to form the three types of cluster complexes [Co 2 (μ-CO)(μ 4 -S)(CO) 4 ] 2 , (1), [Co 4 (CO) 9 (μ 3 -S)(μ-PR 2 ) 2 ] (2A)-(2D), [(2A), R = Me; (2B), R = Et; (2C), R = n-Pr; (2D), R = n-Bu] and [Co 3 (CO) 7 (μ 3 -S)(SPR 2 )] (3A)-(3D), [(3A), R = Me; (3B), R = Et; (3C), R = n-Pr, (3D), R = n-Bu]. The structure of (2A) and the disubstituted triphenylphosphine derivative of (3A) were reported previously. The complexes have been characterized by elemental analyses, FT-IR and 31 1P-[ 1 H] NMR spectroscopy and mass spectrometry