70423-98-2

Basic information

• Product Name: platinum(2+) dimethanide bis(sulfinyldimethane) (1:2)
• CAS NO: 70423-98-2
• Molecular Formula: C₆H₁₈O₂PtS₂
• Molecular Weight: 381.4199
• Mol File: 70423-98-2.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 189°C at 760 mmHg
• Flash Point: 85°C
• Vapor Pressure: 0.805mmHg at 25°C
• CAS DataBase Reference: platinum(2+) dimethanide bis(sulfinyldimethane) (1:2)(CAS DataBase Reference)
• NIST Chemistry Reference: platinum(2+) dimethanide bis(sulfinyldimethane) (1:2)(70423-98-2)
• EPA Substance Registry System: platinum(2+) dimethanide bis(sulfinyldimethane) (1:2)(70423-98-2)

Safety Data

• Hazardous Substances Data: 70423-98-2(Hazardous Substances Data)

Upstream product

• 10025-99-7 potassium tetrachloroplatinate(II) 
• 594-27-4 tetramethylstannane 
• 67-68-5 dimethyl sulfoxide 
• 12152-26-0 dichloro(2,3,5,6-η4-bicyclo{2.2.1}hepta-2,5-dien)platinum(II) 
• 53199-36-3 (norbornadiene)dimethylplatinum(II) 
• 75992-73-3 cis-dichlorobis(dimethylsulfoxide)platinum(II) 
• 30729-25-0 dichlorobis(dimethylsulfoxide)platinum(II) 

Downstream Products

• 15630-18-9 cis-PtMe2(1,2-bis(diphenylphosphino)ethane) 
• 196213-73-7 cis-[Pt(PCy₃)2(Me)2] 
• 405555-54-6 (CH₃)Pt(NC₅H₄NC₅H₂C₆H₅)((CH₃)2SO) 
• 646511-76-4 cis-dimethyl(dimethylsulfoxide)(tris(4-methylphenyl)phosphine)platinum(II) 
• 646511-80-0 cis-dimethyl(dimethylsulfoxide)(tris(4-trifluoromethylphenyl)phosphine)platinum(II) 
• 646511-77-5 cis-dimethyl(dimethylsulfoxide)(triphenylphosphine)platinum(II) 
• 646511-78-6 cis-dimethyl(dimethylsulfoxide)(tris(4-fluorophenyl)phosphine)platinum(II) 
• 646511-79-7 cis-dimethyl(dimethylsulfoxide)(tris(4-chlorophenyl)phosphine)platinum(II) 
• 852456-80-5 [[2-[bis(2-methylphenyl)phosphino-κP]phenyl]methyl-κC]methyl[(sulfinyl-κS)bis[methane]]platinum(II) 
• 70516-09-5 [Pt(Me)2(bis(diphenylphosphino)butane)2] 
• 1453475-56-3 C₁₅H₁₇NOPtS 
• 1141894-23-6 [Pt(2,2′-bipyridine)(PPh₃)(Me)] 
• 1141894-27-0 [(2,2′-bipyridine)(Pt(PPh₃)(Me))₂] 

Relevant articles and documents

DISPLACEMENT OF NORBORNADIENE (NBD) FROM PtMe2(NBD) BY N-DONORS, DIMETHYLSULFOXIDE, AND CYANIDE, AND REACTIONS OF cis-PtMe2L2 WITH IODOMETHANE

Norbornadiene (NBD) was displaced from PtMe2(NBD) by a range of ligands L to form cis-PtMe2L2 (L = pyridine (py), NH3 dimethylsulfoxide (DMSO); L2 = 2,2'-bipyridyl (bipy), ethylenediamine (en), N,N,N',N'-tetramethylethylenediamine (tmen) - but not L = acetonitrile, benzonitrile, N,N-dimethylformamide, or water).These reactions occur more readily than the corresponding displacements of 1,5-cyclooctadiene (COD) from PtMe2(COD).Cyanide readily displaced the diolefin from either PtMe2(NBD) or PtMe2(COD) to form cis-PtMe2(CN)22-, but no reaction occurred with bromide, chloride, and acetylacetonate.Thiocyanate and iodide slowly reacted, but no methyl-platinum product was obtained.The reaction of each of the compounds PtMe2L2 with MeI was studied in benzene.PtMe2(NBD) gave 4.With L = py, 1/2(bipy), or 1/2(tmen), PtMe3IL2 was obtained rapidly at room temperature.For the sparingly soluble compounds with L = NH3 or 1/2(en), heating was necessary for reaction.The product from PtMe2(en) was PtMe3I(en), but cis-PtMe2(NH3)2 gave a mixture of I.With L = DMSO, heating initially gave PtMe3I(DMSO)2, which slowly lost DMSO to form 4.For L = py, 1/2(tmen), treatment with acid readily removed L from PtMe3IL2.

Revisiting the synthesis of trans-[Pt(dmso)2ClMe] and cis-[Pt(dmso)2Me2]: Experimental and DFT studies

The preparation of trans-[Pt(dmso)2ClMe] (2) and cis-[Pt(dmso)2Me2] (3) from cis-[Pt(dmso)2Cl2] (1) and SnMe4 has been reexamined (dmso = dimethyl sulfoxide). The information obtained from experimental and DFT studies has permitted the improvement of previously reported methods for the synthesis of both complexes in terms of reaction times, reaction yields, and atom economy. These studies show that complex 1 reacts with a first equiv of SnMe4 to form trans-[Pt(dmso)2ClMe] (2) as an intermediate that quickly reacts with a second equiv of SnMe4 to yield cis-[Pt(dmso)2Me2] (3). When only 1 equiv of the organostannane reagent is added, the comproportionation of 3 with the excess of unreacted 1 leads the reaction back to the formation of trans-[Pt(dmso)2ClMe] (2). The mechanism of this comproportionation has been studied using DFT calculations.

Synthesis of Platinum(II) Alkyl and Aryl Complexes from K2 and Tetraorganotin Compounds in Dimethyl Sulphoxide

Complexes cis- and cis-(dmso=dimethyl sulphoxide) are readily obtained from K2 and SnMe3R (R=aryl or Me) in dmso at 70-90 deg C.Hydrogen-1 n.m.r. spectra show that the dmso ligands are bound through sulphur in solution an