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81229-43-8

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81229-43-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81229-43-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,2 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81229-43:
(7*8)+(6*1)+(5*2)+(4*2)+(3*9)+(2*4)+(1*3)=118
118 % 10 = 8
So 81229-43-8 is a valid CAS Registry Number.

81229-43-8Relevant articles and documents

Synthesis and reactivity of formamidinato rhodium(I) complexes

Piraino, Pasquale,Tresoldi, Giuseppe,Faraone, Felice

, p. 305 - 312 (2007/10/02)

The syntheses of [Rh(diol)(formamidine)]2 complexes (diol cycloocta-1,5-diene (1); diol norbornadiene (2); formamidine N,N′-di-p-tolylformamidine) are reported. These complexes are dimeric and contain the bridging formamidino ligand. They react with CO, dppe and PPh3 with displacement of the diene ligand to yield the known [Rh(CO)2(formamidine)]2, [Rh(dppe)2]+ and [Rh(PPh3)2(formamidine)], respectively; the last complex, in which the formamidine acts as a chelating ligand, was isolated only as the O2 adduct. With HCl or HBF4 aqueous 1 and 2 do not form hydrides but instead the formamidino cation [p-tolyl-NHCHNHtolyl-p]+ and the complexes [Rh(diol)X]2 (X Cl, F); a possible scheme for the reaction with HCl is proposed. The [Rh(C8H12)(formamidine)]2 complex reacts with heterocumulenes as CS2, SO2, PhNCS and PhNCO with diene displacement; the only product isolated was [Rh(CS2)2(formamidine], to which a polymeric structure is assigned.

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