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90523-09-4

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90523-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90523-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,2 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90523-09:
(7*9)+(6*0)+(5*5)+(4*2)+(3*3)+(2*0)+(1*9)=114
114 % 10 = 4
So 90523-09-4 is a valid CAS Registry Number.

90523-09-4Relevant articles and documents

RHENIUM CARBONYL COMPLEXES. SYNTHESIS AND CHARACTERISATION OF NN'-DIARYLAMIDINES, R'NHC(R)NR' (R=H, Me, or Ph, R'=Ph or C6H4Me-p), AND RELATED CARBAMOYL DERIVATIVES

Clark, J. Andrew,Kilner, Melvyn

, p. 389 - 398 (2007/10/02)

NN'-Diarylacetamidines R'NHC(Me)NR', NN'-diarylbenzamidines R'NHC(Ph)NR', and NN'-diarylformamidines R'NHC(H)NR' (R'=Ph or C6H4Me-p) react thermally or photolytically with and/or 2> (X= Cl or Br) to afford air-stable, white complexes, X>, containing monodentate amidine ligands.The corresponding lithioamidines (R= Me or Ph) gave white carbamoyl complexes >, which are converted thermally to NN'-bidentate > and ortho-metallated > (R''=H or Me).The latter complexes are also formed by further reaction of the carbamoyl complexes with the corresponding amidine.The carbamoyl complexes react with PPh3 to form >.Lithioamidines in excess react with (X= Cl or Br) complexes to give adducts formulated as Li(1+)2>(1-).The new complexes are characterised, and structural data obtained by i.r. and n.m.r. spectroscopy.

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