880094-23-5

Basic information

• Product Name: Pt(C₆F₅)(⁽¹³⁾CH₃O⁽²⁾H)(N(C₆H₃(C(CH₃)3)2)CCH₃)2⁽¹⁺⁾
• CAS NO: 880094-23-5
• Molecular Weight: 856.908
• Mol File: 880094-23-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Pt(C₆F₅)(⁽¹³⁾CH₃O⁽²⁾H)(N(C₆H₃(C(CH₃)3)2)CCH₃)2⁽¹⁺⁾(CAS DataBase Reference)
• NIST Chemistry Reference: Pt(C₆F₅)(⁽¹³⁾CH₃O⁽²⁾H)(N(C₆H₃(C(CH₃)3)2)CCH₃)2⁽¹⁺⁾(880094-23-5)
• EPA Substance Registry System: Pt(C₆F₅)(⁽¹³⁾CH₃O⁽²⁾H)(N(C₆H₃(C(CH₃)3)2)CCH₃)2⁽¹⁺⁾(880094-23-5)

Safety Data

• Hazardous Substances Data: 880094-23-5(Hazardous Substances Data)

Upstream product

• 14742-26-8 [¹³C]methanol 
• 1455-13-6 deuteromethanol 

Relevant articles and documents

Kinetics and mechanism of methane, methanol, and dimethyl ether C-H activation with electrophilic platinum complexes

The relative rates of C-H activation of methane, methanol, and dimethyl ether by [(N-N)PtMe-(TFE-d3)]- ((N-N) = ArN=C(Me)-C(Me)=NAr; Ar = 3,5-di-tert-butylphenyl, TFE-d3 = CF 3CD2OD) (2(TFE)) were determined. Methane activation kinetics were conducted by reacting 2(TFE)-13C with 300-1000 psi of methane in single-crystal sapphire NMR tubes; clean second-order behavior was obtained (k = 1.6 ± 0.4 × 10-3 M-1 s -1 at 330 K; k = 2.7 ± 0.2 × 10-4 M -1 s-1 at 313 K). Addition of methanol to solutions of 2(TFE) rapidly establishes equilibrium between methanol (2(MeOD)) and trifluoroethanol (2(TFE)) adducts, with methanol binding preferentially (K eq = 0.0042 ± 0.0006). C-H activation gives [(N-N)Pt(CH 2OD)-(MeOD)]+ (4), which is unstable and reacts with [(RO)B(C6F5)3]- to generate a pentafluorophenyl platinum complex. Analysis of kinetics data for reaction of 2 with methanol yields k = 2.0 ± 0.2 × 10-3 M-1 s-1 at 330 K, with a small kinetic isotope effect (k H/kD = 1.4 ± 0.1). Reaction of dimethyl ether with 2(TFE) proceeds similarly (Keq = 0.023 ± 0.002, 313 K; k = 5.5 ± 0.5 × 10-4 M-1 s-1, k H/kD = 1.5 ± 0.1); the product obtained is a novel bis(alkylidene)-bridged platinum dimer, [(diimine)Pt(μ-CH2)(μ- (CH(OCH3))Pt(diimine)]2+ (5). Displacement of TFE by a C-H bond appears to be the rate-determining step for all three substrates; comparison of the second-order rate constants (k(methane)/k (methanol) = 1/1.3, 330 K; k(methane)/k (dimethyl ether) = 1/2.0, 313 K) shows that this step is relatively unselective for the C-H bonds of methane, methanol, or dimethyl ether. This low selectivity agrees with previous estimates for oxidations with aqueous tetrachloroplatinate(II)/hexachloroplatinate(IV), suggesting a similar rate-determining step for those reactions.