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4262-38-8

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4262-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4262-38-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,6 and 2 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4262-38:
(6*4)+(5*2)+(4*6)+(3*2)+(2*3)+(1*8)=78
78 % 10 = 8
So 4262-38-8 is a valid CAS Registry Number.

4262-38-8Relevant articles and documents

Contributions to the Chemistry of Boron, 167. Synthesis of Diazadiboretidines, Borazines, and Octahydrotetrazatetraborocines via Stannazane Cleavage Reactions

Franz, Thomas,Hanecker, Elisabeth,Noeth, Heinrich,Stoecker, Walter,Storch, Wolfgang,Winter, Gerhard

, p. 900 - 916 (2007/10/02)

Diazadiboretidines 2 are obtained from the diazadistannetidine 1 or 2NC(CH3)3 by Sn-N cleavage with boron halides RBX2 (R = CH3, C2H5, CH(CH3)2, C6H5, Cl, X = Cl, Br).Borazines 15 are formed, however, by Sn-N cleavage of 2NC(CH3)3 (12) with RBX2 (except with (CH3)2HCBCl2) in a 1:1 ratio. (Stannylamino)boranes are NMR detectable intermediates. - The diazadiboretidines 2 2b - d (R = C2H5, CH(CH3)2, C6H5) do not dimerize in contrast to 2a (R = CH3).The equilibrium constant has been determined for the equilibrium 2a 6, the formation of the dimer obeying a second order rate law. 2 (2e) is metastable at -20 deg C.It forms 4 (8) irreversibly at 20 deg C. - 6 crystallizes in the monoclinic system, space group P21/c.The tubshaped molecule possesses alternating single and double BN bonds (BN: 1.516, 1.404 Angstroem).

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