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12099-10-4

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12099-10-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 12099-10-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,9 and 9 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 12099-10:
(7*1)+(6*2)+(5*0)+(4*9)+(3*9)+(2*1)+(1*0)=84
84 % 10 = 4
So 12099-10-4 is a valid CAS Registry Number.

12099-10-4Downstream Products

12099-10-4Relevant articles and documents

A facile atmospheric pressure synthesis of the hexacarbonylmetalate ions, M(CO)6-, of niobium and tantalum

Dewey, Christopher G.,Ellis, John E.,Fjare, Kristi L.,Pfahl, Kathryn M.,Warnock, Garry F. P.

, p. 388 - 391 (2008/10/08)

Treatment of the pentachlorides of niobium and tantalum with 6 equiv of alkali-metal naphthalenide or 1-methylnaphthalenide in DME at -60 to -80°C provides thermally unstable red-brown intermediates that may be M(C10H8)2- or M(1-MeC10H7)2- (M = Nb, Ta). These species readily react with CO at atmospheric pressure at -60°C to provide 30-54% yields of the corresponding M(CO)6-, isolated as Et4N+, n-Bu4N+, and Na(diglyme)2+ salts. This two-step reductive carbonylation procedure is the first reported atmospheric pressure synthesis of the hexacarbonylmetalate(1-) ions of niobium and tantalum. The synthesis and properties of unsolvated NaTa(CO)6 are also described.

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