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138336-93-3

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138336-93-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138336-93-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,3 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138336-93:
(8*1)+(7*3)+(6*8)+(5*3)+(4*3)+(3*6)+(2*9)+(1*3)=143
143 % 10 = 3
So 138336-93-3 is a valid CAS Registry Number.

138336-93-3Relevant articles and documents

Dinuclear Double Helicates incorporating a 1,3-Phenylene Spacer; the Crystal and Molecular Structure of Diacetato-1κ2O-,2κ2O-bis2N,N':2κ2N'',N'''>dinickel Bis(hexafluorophosphate)

Constable, Edwin C.,Hannon, Michael J.,Tocher, Derek A.

, p. 1883 - 1890 (1993)

Linking two bipyridine units by a 1,3-phenylene spacer has provided a novel class of ligand which promotes the spontaneous self-assembly of double helicates upon reaction with transition-metal ions.Interaction with copper(I) or silver(I) resulted in dinuclear double-helical complexes with the metal ions occupying pseudo-tetrahedral co-ordination sites.Reaction with cobalt(II) or nickel(II) acetates gave similar dinuclear double-helical structures with a didentate acetate ligand completing the co-ordination sphere of each metal to give a pseudo-octahedral geometry.The crystal structure of 22(O2CMe)2>2 2 = 1,3-bis(4-meth ylthio-2,2'-bipyridin-6-yl)benzene> has been determined.The two metal centres are separated by 5.875 Angstroem.In contrast to the helicates formed by the linear oligopyridines, no significant ?-stacking interactions are observed between pyridine moieties on the helical strands.

α,α'-Oligopyridines: A Source of New Materials

Potts, Kevin T.

, p. 741 - 768 (2007/10/02)

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