200574-34-1

Basic information

• Product Name: [Pt(CH₃)4(N,N'-dixylyl-1,4-diaza-1,3-butadiene)]
• Synonyms: [Pt(CH₃)4(N,N'-dixylyl-1,4-diaza-1,3-butadiene)]
• CAS NO: 200574-34-1
• Molecular Weight: 519.589
• Mol File: 200574-34-1.mol

Chemical Properties

• CAS DataBase Reference: [Pt(CH₃)4(N,N'-dixylyl-1,4-diaza-1,3-butadiene)](CAS DataBase Reference)
• NIST Chemistry Reference: [Pt(CH₃)4(N,N'-dixylyl-1,4-diaza-1,3-butadiene)](200574-34-1)
• EPA Substance Registry System: [Pt(CH₃)4(N,N'-dixylyl-1,4-diaza-1,3-butadiene)](200574-34-1)

Safety Data

• Hazardous Substances Data: 200574-34-1(Hazardous Substances Data)

Downstream Products

• 102-54-5 ferrocene 
• 945924-47-0 (CHNC₆H₃(CH₃)2)2Pt(CH₃)3(C⁽²⁾H₃CN)⁽¹⁺⁾*CF₃SO₃^(1-)=(CHNC₆H₃(CH₃)2)2Pt(CH₃)3(C⁽²⁾H₃CN)CF₃SO₃ 
• 945924-40-3 (CHNC₆H₃(CH₃)2)2Pt(CH₃)3(CH₃CN)⁽¹⁺⁾*CF₃SO₃^(1-)=(CHNC₆H₃(CH₃)2)2Pt(CH₃)3(CH₃CN)CF₃SO₃ 
• 945924-43-6 (CHNC₆H₃(CH₃)2)2Pt(CH₃)(CH₃CN)⁽¹⁺⁾*CF₃SO₃^(1-)=(CHNC₆H₃(CH₃)2)2Pt(CH₃)(CH₃CN)CF₃SO₃ 
• 201802-55-3 Pt(CH₃)4(((CH₃)2C₆H₃NCH)2)^(1-) 

Relevant articles and documents

Reactions of new organoplatinum(II) and -(IV) complexes of 1,4-diaza-1,3-butadienes with light and electrons. Emission vs photochemistry and the electronic structures of ground, reduced, oxidized, and low-lying charge-transfer excited states

Complexes between the 1,4-disubstituted 1,4-diaza-1,3-butadiene chelate ligands RN=CHCH=NR (R-DAB; R = alkyl, aryl) and the organoplatinum fragments PtMe2, PtMe4, and PtMeS2 (Mes = mesityl) were prepared and characterized with respect to their electronic structures. All compounds are distinguished by low-energy charge-transfer transitions to low-lying π* orbitale of the R-DAB ligands, either from metal d orbitals (PtII) or from metal-carbon σ bond combinations (PtIV). These spectral assignments are supported by DFT calculations on model complexes between HN=CHCH=NH and PtMe2 or PtMe4. The calculations also reproduce the structural results for the complex between CyN=CHCH=NCy and PtMe4, which exhibits significantly longer Pt-C bonds to the axial methyl groups. The distinct solvatochromism of the long-wavelength transitions is described, as are the UV/vis spectroelectrochemical results for reversible reduction to PtIV(R-DAB?-) or PtII(R-DAB?-) species (no evidence for a PtI state). In contrast, the oxidation is electrochemically irreversible except for the dimesitylplatinum compounds. The electrochemical potentials of corresponding PtMe2 and PtMe4 compounds are very similar, demonstrating that the binding of two additional methyl carbanions compensates for the effect of the higher metal oxidation state. While the organoplatinum(II) species are emissive, the tetramethylplatinum(IV) complexes are photoreactive and undergo metal-to-ligand methyl transfer reactions - in agreement with the structurally confirmed weaker bonding to the axial methyl groups.

Oxidatively induced reactions of a diimine platinum(IV) tetramethyl complex

The oxidation of the Pt(IV) tetramethyl complex [Ar{single bond}N{double bond, long}CH{single bond}CH{double bond, long}N{single bond}Ar]PtMe4 (Ar = 2,6-Me2C6H3) has been investigated in acetonitrile and dichloromethane. Cyclic voltammetry demonstrates that the irreversible oxidation of [Ar{single bond}N{double bond, long}CH{single bond}CH{double bond, long}N{single bond}Ar]PtMe4 occurs at a slightly less positive oxidation potential than the irreversible oxidation of the analogous Pt(II) species [Ar{single bond}N{double bond, long}CH{single bond}CH{double bond, long}N{single bond}Ar]PtMe2. The product distribution arising from the oxidation depends strongly on the reaction conditions and includes cationic Pt(IV) species (acetonitrile, dichloromethane solvents) and Pt(II) species (dichloromethane only). Evidence is presented that suggests that homolytic cleavage of a weakened Pt{single bond}C bond in [ArN {double bond, long} CH {single bond} CH {double bond, long} NAr] PtMe4{radical dot} + is involved in the oxidatively induced reactions.