CARBONYL COMPLEXES OF MOLYBDENUM AND TUNGSTEN WITH SULFUR DONORS. IV. PYRIDINE REPLACEMENT REACTIONS OF Mo(S,S)(?-allyl)(CO)2(py) COMPLEXES ((S,S) = XANTHATE AND DITHIOCARBAMATE)

Article abstract of DOI:10.1016/S0022-328X(00)98508-5

The reactions of Mo(S,S)(?-allyl)(CO)2(py) <(S,S)=methylxanthate, N-ethyldithiocarbamate and N,N-diethyldithiocarbamate> with various N- and P-donor mono- and bi-dentate ligands has given four types of mono- and bi-nuclear complexes: Mo(S,S)(?-allyl)(CO)2(L) <(S,S)=Mexant, EtHdtc, Et2dtc; L=PPh3>, Mo(S,S)(?-allyl)(CO)2(L-L) <(S,S)=Mexant, (L-L)=bipy, phen, DDH, GBCHI; (S,S)=EtHdtc, (L-L)=bipy, phen, GBCHI; (S,S)=Et2dtc, (L-L)=phen<*>, 2(μ-L-L) <(S,S)=Mexant, EtHdtc, Et2dtc; (L-L)=4,4'-bipy, 4,4'-DTBP, dppe>, and 2(μ-CO)2 <(S,S)=EtHdtc, Et2dtc; L-L=dppe>.In some cases the pyridine replacement is accompanied by a change in the coordination mode of the 1,1-dithiolato ligand.