Thiadiazatrimethylenemethane and N,N′,P-triphenylphosphonothioic diamide complexes of platinum(<scp>II</scp>)
作者:William Henderson、Raymond D. W. Kemmitt、Simon Mason、Mark R. Moore、John Fawcett、David R. Russell
DOI:10.1039/dt9920000059
日期:——
Reaction of N,N'-diphenylthiourea with cis-[PtCl2L2] [L = PPh3, PMePh2, PMe2Ph, PEt2Ph, PPh2(NEt2) or L2 = Ph2PCH2CH2PPh2 (dppe) in the presence of silver(I) oxide gives the thiadiazatrimethylenemethane complexes [activated PtSC(=NPh)NPh}L2] an X-ray study on [activated PtSC(= NPh)NPh}(PPh3)2] establishing the presence of a flat activated Pt-S-C-N ring. Related activated Pt-S-P-N ring complexes which contain a reactive nucleophilic P = NPh group are formed upon treatment of PhNHP(S) (Ph)NHPh with cis-[PtCl2L2] [L = PPh3, L2 = dppe, Ph2P(CH2)3PPh2 or Ph2P(CH2)4PPh2] and potassium hydroxide. Treatment of [activated PtSP(= NPh)(Ph)NPh}L2] with Mel afforded an aminophosphonium salt, whilst with substrates containing either C = O or C = S functionalities new complexes of the type [activated [PtSPO(O)(Ph)NPh}L2] or [PtSP(S)(Ph)S}L2] were formed respectively.