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15989-98-7

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15989-98-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15989-98-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,8 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 15989-98:
(7*1)+(6*5)+(5*9)+(4*8)+(3*9)+(2*9)+(1*8)=167
167 % 10 = 7
So 15989-98-7 is a valid CAS Registry Number.

15989-98-7Relevant articles and documents

Syntheses and properties of tetrakis(pentafluorophenyl)tellurium, Te(C6F5)4, and related compounds - (See abstract)

Naumann, Dieter,Tyrra, Wieland,Herrmann, Rudolf,Pantenburg, Ingo,Wickleder, Mathias S.

, p. 833 - 842 (2008/10/08)

Te(C6F5)4 was prepared from the reactions of TeCl4 or Te(C6F5)2Cl2 with Grignard reagents or AgC6F5 in moderate to good yields. Substitution reactions with Me3SiX (X = Cl, Br, OSO2CF3), with equimolar amounts of Br2, with AgNO3 and with H[BF4] or BF3·OEt2 yielded the Te(C6F5)3X derivatives (X = Cl, Br, OSO2CF3, NO3, BF4). Oxidation reactions of Cd, Hg, and Pd0 complexes led to Te(C6F5)2 and the corresponding bis(pentafluorophenyl) derivatives M(C6F5)2 (M = Cd, Hg, Pd) and with InBr to In(C6F5)2Br. From very slow hydrolysis of Te(C6F5)4 the oxide Te(C6F5)2O was prepared. The thermal decomposition, the NMR and mass spectra of the partially new compounds are discussed. The crystal structures of Te(C6F5)3Br (monoclinic, P21/a, Z = 4), [Te(C6F5)3][OSO2CF3] (monoclinic, P21/n, Z = 16) and [Te(C6F5)2O]2 (triclinic, P1, Z = 2) were determined.

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