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138521-71-8

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138521-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138521-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,2 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138521-71:
(8*1)+(7*3)+(6*8)+(5*5)+(4*2)+(3*1)+(2*7)+(1*1)=128
128 % 10 = 8
So 138521-71-8 is a valid CAS Registry Number.

138521-71-8Downstream Products

138521-71-8Relevant articles and documents

Manganese(III) Complexes with MnIIIN3O3 (S = 2) Co-ordination by Sexidentate Schiff-base Ligands: Synthesis, Spectra and Electrochemistry

Ramesh, Krishnamoorthi,Bhuniya, Debnath,Mukherjee, Rabindranath

, p. 2917 - 2920 (2007/10/02)

Complexes of high-spin manganese(III) (μeff = 4.79-5.30 at 298 K) with a closely related group of sexidentate Schiff-base ligands have been prepared and their solution properties thoroughly investigated.The brown to green crystalline complexes display ligand-to-metal charge-transfer transitions in the range 330-400 nm in addition to a crystal-field transition in the range 560-600 nm.The solution stereochemistry has been determined by paramagnetically shifted 1H NMR spectroscopy.Unlike the C3 symmetry in the solid-state structure, in solution the MnIIIN3O3 co-ordination sphere is severely distorted (ca.C1 symmetry).Cyclic voltammetric studies in dimethylformamide solution reveal an irreversible MnIII-MnII couple pc in the range -0.62 to -0.05 V vs. saturated calomel electrode (SCE)> and a quasi-reversible MnIV-MnIII couple (Ef in the range +0.42 to +0.86 V vs.SCE).

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