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99620-52-7

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99620-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99620-52-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,2 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99620-52:
(7*9)+(6*9)+(5*6)+(4*2)+(3*0)+(2*5)+(1*2)=167
167 % 10 = 7
So 99620-52-7 is a valid CAS Registry Number.

99620-52-7Downstream Products

99620-52-7Relevant articles and documents

Synthesis, reactivity, and crystal structure of CpV(CO)3tht (tht = tetrahydrothiophene). A mild-condition synthetic pathway to substitution derivatives of CpV(CO)4 and preparation and X-ray characterization of cis-CpV(CO)2bpy (bpy = 2,2′-bipyridine)

Gambarotta, Sandro,Chiesi-Villa, Angiola,Guastini, Carlo

, p. 99 - 102 (2008/10/08)

Irradiation of CpV(CO)4 in the presence of tht (tht = tetrahydrothiophene) affords the complex CpV(CO)3tht (1), in which one carbonyl group has been replaced by the thioether ligand. 1 reacts readily with several ligands including 2,2′-bipyridine (bpy) and pyrrolidine (pyrr), providing a mild-condition pathway to the new derivatives cis-CpV(CO)2bpy (2) and CpV(CO)3pyrr (3). The structures of 1 and 2 have been determined by X-ray analysis. Both complexes are orthorhombic: 1 has a Pbca space group with a = 14.171 (4) ?, b = 14.184 (5) ?, c = 13.035 (4) ?, V = 2620 (1) ?3, Z = 8, and Dcalcd = 1.461 g cm-3, and the final R factor for 1937 reflections was 0.054; 2 has a Pnma space group with a = 7.687 (4) ?, b = 15.073 (6) ?, c = 12.593 (5) ?, V = 1459 (1) ?3, Z = 4, and Dcalcd = 1.494 g cm-3, and the final R value for 1423 reflections was 0.035. The structure of 3 has been assigned on the basis of its 13C and 1H NMR, IR, and analytical data.

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