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681812-02-2

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681812-02-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 681812-02-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,1 and 2 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 681812-02:
(8*6)+(7*8)+(6*1)+(5*8)+(4*1)+(3*2)+(2*0)+(1*2)=162
162 % 10 = 2
So 681812-02-2 is a valid CAS Registry Number.

681812-02-2Relevant articles and documents

Synthesis and characterisation of some new boron compounds containing the 2,4,6-(CF3)3C6 H2 (fluoromes = Ar), 2,6-(CF3)2C6H3 (fluoroxyl = Ar′), or 2,4-(CF3)2 C6H3 (Ar″) ligands

Cornet, Stephanie M.,Dillon, Keith B.,Entwistle, Christopher D.,Fox, Mark A.,Goeta, Andres E.,Goodwin, Helen P.,Marder, Todd B.,Thompson, Amber L.

, p. 4395 - 4405 (2007/10/03)

Several new boron compounds containing the 2,4,6- (CF3)3C6H2 (fluoromes = Ar), 2,6-(CF3)2C6H3 (fluoroxyl = Ar′) or 2,4-(CF3)2C6H3 (Ar″) ligands have been synthesised from reactions of ArLi, Ar′Li or Ar″Li with BCl3, and characterised by 19F and 11B NMR spectroscopy. Chlorine/fluorine exchanges are evident in these reactions. The crystal and molecular structures of Ar2BF, Ar″3B, Ar2B(OH), Ar′B(OH)2 and Mes2BF (Mes = 2,4,6-Me3C6H2) have been determined by single crystal X-ray diffraction. Ar″3B represents the first example of a compound containing three Ar″ ligands to be structurally characterised. Molecular geometries and GIAO-NMR shifts for several new boron compounds have been calculated at the HF/6-31G* level of theory, and compared with the available experimental results.

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