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12099-72-8

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12099-72-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 12099-72-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,9 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12099-72:
(7*1)+(6*2)+(5*0)+(4*9)+(3*9)+(2*7)+(1*2)=98
98 % 10 = 8
So 12099-72-8 is a valid CAS Registry Number.

12099-72-8Relevant articles and documents

MODIFICATION OF THE ACID-BASE PROPERTIES OF HYDROXYCARBONYL COMPLEXES OF IRIDIUM(III) BY SUBSTITUTION OF CARBON MONOXIDE BY A TERTIARY PHOSPHINE LIGAND

Deeming, Antony J.,Proud, Graeme P.

, p. 385 - 390 (2007/10/02)

A dichloromethane solution of the cationic carbonyl complex (IrCl2(CO)(PMe2Ph)3)(ClO4) reacts with aqueous KOH to give (IrCl2(CO2H)(PMe2Ph)3) which has been characterised spectroscopically.This CO2H compound is very much more basic and very much less acidic than (IrCl2(CO2H)(CO)(PMe2Ph)2).Tertiary amines will not deprotonate (IrCl2(CO2H)(PMe2Ph)3) while Li(N(SiMe3)2) leads to decarboxylation products trans, mer- and cis, mer-(IrHCl2(PMe2Ph)3).The mechanisms of these reactions are considered and the hydroxycarbonyl complex is compared with its formato isomer which decarboxylates much less readily.

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