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119693-92-4

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119693-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119693-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,6,9 and 3 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 119693-92:
(8*1)+(7*1)+(6*9)+(5*6)+(4*9)+(3*3)+(2*9)+(1*2)=164
164 % 10 = 4
So 119693-92-4 is a valid CAS Registry Number.

119693-92-4Downstream Products

119693-92-4Relevant articles and documents

Kinetics and Mechanism of Phosphine Substitution for CO in (-)

Ching, Stanton,Shriver, Duward F.

, p. 3238 - 3243 (2007/10/02)

Rate laws and activation parameters were determined for CO substitution of by phosphine ligands.These results along with the dependence of the reaction on the nature of the incoming ligand support an associative mechanism.Previous NMR data indicate that the phosphines selectively attack the Co metal center.Activation parameters are ΔH(excit.) = +7.2 to +10.3 kcal/mol and ΔS(excit.) = -34.0 to -45.5 cal/mol K.The activated complex is proposed to attain an open structure by breaking either a metal-metal or metal-carbon bond.An increase insolvent polarity increases the rate of ligand substitution, whereas a change in the cation from PPN(+) to Me4N(+) has a negligible effect.The rates of reaction were influenced by both the basicity and steric properties of the phosphines.

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