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39045-49-3

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39045-49-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39045-49-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,0,4 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 39045-49:
(7*3)+(6*9)+(5*0)+(4*4)+(3*5)+(2*4)+(1*9)=123
123 % 10 = 3
So 39045-49-3 is a valid CAS Registry Number.

39045-49-3Relevant articles and documents

On the Lewis Acidity of Nickel(0), II: Methylenetriorganylphosphorane Complexes of Nickel(0)

Poerschke, Klaus-Richard,Wilke, Guenther,Mynott, Richard

, p. 298 - 312 (2007/10/02)

Methylenetriorganylphosphoranes R3P=CH2 (R = CH3, C6H5) react with Ni(CDT) and Ni(C2H4)3 to form the (methylenetriorganylphosphorane)(alkene)nickel(0) complexes (R3PCH2)Ni(CDT) (R = CH3, 2) and (R3PCH2)Ni(C2H4)2 (R = CH3, C6H5, 4, 5).On treatment with CO the ethene complexes give the known carbonyl complexes (R3PCH2)Ni(CO)3 (R = CH3, C6H5, 9, 10) in pure form. 2 and 4 decompose at room temperature to give Me3PNi(CDT) and Me3PNi(C2H4)2; cyclopropane is produced in the presence of ethene. - The stability of the CH2-Ni0 bond in the methylenetriorganylphosphorane complexes falls in the series Ni(CO)3 > Ni(C2H4)2 > Ni(CDT), corresponding to declining Lewis acidity of the nickel atom. 13C NMR evidence indicates that in the same sequence the P-CH2 bond also becomes weakened.The thermally induced elimination of methylene shows that the nickel bonded methylene group has appreciable carbenoid character.

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