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91493-09-3

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91493-09-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91493-09-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,4,9 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91493-09:
(7*9)+(6*1)+(5*4)+(4*9)+(3*3)+(2*0)+(1*9)=143
143 % 10 = 3
So 91493-09-3 is a valid CAS Registry Number.

91493-09-3Downstream Products

91493-09-3Relevant articles and documents

HYDROGEN AND COORDINATION BONDS IN ISOSTRUCTURAL SYSTEMS. ARE HYDROGEN BONDS UNIQUE?

Epstein, L. M.,Shubina, E. S.,Kravtsov, D. N.

, p. 327 - 338 (2007/10/02)

Reliable spectral criteria which allow comparison of the hydrogen and coordination bonds in isostructural systems are suggested.The model systems consist of ArXH and ArXMRn (X=O, S, N; M=Hg, Sn, Pb, Sb; Ar=C6H4Y where Y=COR, NO2, C5H4N, etc.) which interact with various N-, P- and O-bases.The conditions on which the νXM vibrations are local, have been established.Examination of thiol derivatives reveals the similarity of spectral (IR, Raman) effects for coordination and hydrogen bonds in the νXM and νXH regions, respectively.The character of dependence of a proton and a bul ky organometallic cation transfer on medium, a heteroatom X or a base is shown to be similar.Some quantitative and qualitative relationships between XH and XM bond polarities and the capacity to form complexes, ionic pairs or ions are found.Comparison of spectral properties of isostructural systems with hydrogen and coordination bonds does not reveal the uniqueness of the H bond.

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