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494190-16-8

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494190-16-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 494190-16-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,4,1,9 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 494190-16:
(8*4)+(7*9)+(6*4)+(5*1)+(4*9)+(3*0)+(2*1)+(1*6)=168
168 % 10 = 8
So 494190-16-8 is a valid CAS Registry Number.

494190-16-8Downstream Products

494190-16-8Relevant articles and documents

Azanonaborane-pyridine derivatives Synthesis, structure and some molecular-orbital calculations

Bauer, Claudia,Gabel, Detlef,Borrmann, Tobias,Kennedy, John D,Kilner, Colin A,Thornton-Pett, Mark,D?rfler, Udo

, p. 205 - 216 (2002)

The molecular structure of hypho-type [(RNH2)B8H11NHR] is based on a {B8} cluster with one nitrogen bridge and one exo amine ligand. In general these azanonaboranes are synthesized by the reaction of [B9H13(SMe2)] with primary amines. Modifications of these azanonaboranes are possible by ligand-exchange reactions. Necessary conditions for ligand-exchange reactions of the azanonaboranes [(RNH2)B8H11NHR], in which the exo-{NH2R} group is replaced by other nitrogen-donor ligands, are reported. The nitrogen-donor ligands that have been examined include primary, secondary and tertiary amines as well as a series of substituted pyridines. The structures of the pyridine-containing azanonaboranes [(C5H5N)B8H11NHR] where R = methyl, ethyl, iso propyl or tertiary butyl, have been determined crystallographically, and are compared with the aliphatic azanonaboranes [(RNH2)B8H11NHR]. The reactions of the various [(RNH2)B8H11NHR] species with pyridine or the substituted pyridines give coloured products, contrasting with the colourless nature of the starting alkylamine species. The electronic interaction between the {B8} hypho-type unit and the bonded pyridine units has been investigated by UV-vis spectroscopy and by AM-1 molecular-orbital calculations.

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