[PtCl(PEt3)[CH(PPh2S)2]] novel C,S-bonded chelate with dynamic stereochemistry controlled by a metal-ligand pivot

Platinum and palladium complexes of [R2PCH2P(Y)R′2] and [R2PCHP(Y)R′2]− ligands, Y = O,S, or Se: 13C, 31P, 77Se, and 195Pt nuclear magnetic resonance studies and the crystal and molecular structures of trans-[PtCl(PEt3){But2PCH2P(O)Me2}][ClO4] and trans-PtCl(PEt3){Ph2PCH2P(S)ButBerry1, Browning2, Dixon3 et al. 1988Can. J. Chem.Self Cite521240View full textAdd to dashboardCite

“…Moreover, the reversal of these deprotonations by HBF4.Et20 provides an important confirmation of the assigned structures. Our previous studies using Ph2P(S)CH2P(S)Ph2 and related ligands showed that deprotonation of the ligand sometimes led to a change from S,S to S,C coordination (9). Thus, it is also important, and somewhat disappointing, to note that none of the present complexes showed any evidence of this effect.…”

“…These appear to be the first examacetylacetone or acetylacetonate (8,9). Some of this work had ples of platinum group complexes of the anionic ligands,…”

Preparation and properties of palladium(II) and rhodium(I) complexes containing bidentate phosphine sulphide and selenide ligands

“…[Rh(CO)2 {CHE(PhzPS)2)]BF4 (8) The complex was prepared by two routes: 0340-4285 9 1993 Chapman & Hall i) To a solution of [-RhCI(CO)2]2 (100 mg; 0.257 mmol) in M%CO (20cm 3) was added T1BF 4 (150mg; 0.510mmol) and CH2(Ph2PS)2 (233 mg; 0.510 mmol). After stirring for 2 h, the solution was filtered and concentrated under reduced pressure.…”

“…Related cationic rhodium(I), iridium(I), platinum(II), gold(III) or neutral copper(I) complexes can be obtained using the bidentate ligand PhzP(E)(CH2P(E)PhE)(E = S, Se) (~-1~ These ligand types have been the subject of an increasing interest because their methylene protons react with bases to yield an anionic derivative. When deprotonation was carried out on the coordinated ligand, the resulting complexes contain a methyne carbon-metal bond, with the anionic form acting as a C,S-bonded chelate (8).…”

Synthesis and characterization of η3-allyl palladium(II) complexes with Ph2P(S)CHP(S)Ph2 and OC(CF3)CHCO(C4H3S) co-ligands

“…The use of diphosphines, Ph 2 P(CH 2 ) n PPh 2 , as chelating or bridging ligands is well-known [8,9], however, work on the related diphosphine disulfide ligands has been much less extensive. The formation of a few complexes of Ph 2 PCH 2 P(S)Ph 2 has been reported [10], as have complexes of Ph 2 P(S)CH 2 P(S)Ph 2 [11][12][13][14][15][16]. Since studies of the reactions of g 3 -allylic palladium(II) complexes containing anionic chelate ligands with unsaturated hydrocarbons suggest that such complexes may be useful for a variety of organic syntheses and as model systems for catalytic reactions [17][18][19][20][21][22][23], we considered it worthwhile to synthesize some g 3 -allyl complexes of palladium(II) with bis(diphenylphosphino) methine disulfide and acetylacetonate ligands as potentially bidentate chelating agents.…”