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20500-70-3

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20500-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20500-70-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,0 and 0 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20500-70:
(7*2)+(6*0)+(5*5)+(4*0)+(3*0)+(2*7)+(1*0)=53
53 % 10 = 3
So 20500-70-3 is a valid CAS Registry Number.

20500-70-3Relevant articles and documents

Structural, Spectroscopic and Redox Studies of mer- (L = PMe2Ph or AsMe2Ph, X = Cl or Br). Crystal Structures of mer- (X = Cl or Br) and (X = Br, E = P or As; X = I, E =As)

Holmes, Nicholas J.,Genge, Anthony R. J.,Levason, William,Webster, Michael

, p. 2331 - 2334 (2007/10/03)

The complexes mer- (X = Cl or Br, L = PMe2Ph or AsMe2Ph) have been re-examined and assignments for their UV/VIS spectra proposed.Attempts to prepare analogues with X = I or L = SbR3 have been unsuccessful.Cyclic voltammetry revealed only irreversible oxidation and reduction processes and chemical oxidation with halogens resulted in decomposition to 2-, in contrast to the chemistry of related osmium compounds.The crystal structures of mer- (X = Cl or Br) have been determined and confirm the geometrical isomer formed.Crystal structures were also determined for (X = Br, L = PMe2Ph or AsMe2Ph; X = I, L = AsMe2Ph) obtained by decomposition of mer- in solution, which are the first structurally characterised examples of Ru25+ dimers of this type with bromide or iodide co-ligands.The structures are consistent with a formal Ru-Ru bond order of 1/2.

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