Preparation of complexes formed in the reaction between dicobaltoctacarbonyl and tetraalkyldiphosphine disulfides, R2P(S)P(S)R-2 (R = Me, Et, n-Pr, n-Bu)

Co-2(CO)(8) and R2P(S)P(S)R-2 (R = Me, Et, n-Pr, n-Bu) react to form the three types of cluster complexes [Co-2(mu -CO)(mu (4)-S)(CO)(4)](2), (1), [Co-4(CO)(9)(mu (3)-S)(mu -PR2)(2)] (2A)-(2D), [(2A), R = Me; (2B), R = Et; (2C), R = n-Pr; (2D), R = n-Bu] and [Co-3(CO)(7)(mu (3)-S)(SPR2)] (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-LR and P-31-[H-1] NMR spectroscopy and mass spectrometry.