650634-66-5

Upstream product

• 650634-69-8 [Pt(η2-SCNMe2)(PPh3)2][PF6] 
• 2667-20-1 potassium methylxanthate 
• 650634-69-8 [bis(triphenylphosphine)(η2-N,N-dimethylthiocarbamoyl)platinum(II)][hexafluorophosphate] 

Relevant academic research and scientific papers

Syntheses, displacement behavior, hetero-atom carbene, and crystal structures of platinum complexes containing the N,N-dimethylthiocarbamoyl, Me2NC{double bond, long}S, ligand

In solution state, the complex [Pt(PPh3)2(η1-SCNMe 2)(Cl )] (1) shows intermolecular displacement of two triphenylphosphine ligands to form the bridging η2-thiocarbamoyl diplatinum complex [Pt(PPh3)Cl]2(μ,η2-SCNMe 2)2 (2). Intramolecular displacement of the chloride product η2-thiocarbamoyl complex [Pt(PPh3)2(η2-SCNMe2)][C l] (3) was not been detected from the 31P{1H} NMR experiments. However, the chelating η2-thiocarbamoyl complex [Pt(PPh3)2(η2-SCNMe2)][P F6] (4) can be produced by the reaction of 1 with NH4PF6 in acetone at ambient temperature. Treatment of 1 with dppa {bis(diphenylphosphino)amine} in dichloromethane at room temperature results in the formation of the complex [Pt(PPh3)(η2-dppa){η1-C(S) NMe2}][Cl] (5). Treatment of 4 with EtOCS2K or MeOCS2K yields Fischer-type carbene-complex [Pt(PPh3){η1-C(SEt)(NMe2)} (η2-S2CO)] (7) or [Pt(PPh3){η1-C(SMe)(NMe2)} (η2-S2CO)] (8). The carbene-complexes 7 and 8 are formed via alkyl migration of the alkyldithiocarbonate ligand to the thiocarbamoyl ligand. Complex 1 reacts with EtOCS2K, resulting in the formation of the η2-dithiocarbonate complex [Pt(PPh3)(η1-SCNMe2) (η2-S2COEt)] (6) and the carbene-complex[Pt(PPh3){η1-C(SEt) (NMe2)}(η2-S2CO)] (7) with a ratio of 3:2 according to the integration of the 31P{1H} NMR spectra. By continuously stirring mixtures 6 and 7 in the CH2Cl2 solution for 4 h, complex 7 was formed as the final product. All of the complexes were identified by spectroscopic methods and complexes 2, 5, and 7 were determined by single-crystal X-ray diffraction.

Novel palladium and platinum carbene-complexes containing dithiocarbonate ligand [M(PPh3) {η2(S,S)-S2CO]-{C(SR)(NMe2)}] formed via alkyl migration of O-alkyldithiocarbonate to thiocarbamoyl ligand

The first example of alkyl migration of O-alkyldithiocarbonate to thiocarbamoyl ligand results in carbene-complexes [M(PPh3){η2(S,S)-S2CO] {C(SR)(NMe2)}] (M = Pd, Pt; R = Me, Et) from the reactions of [M(η2