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20936-09-8

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20936-09-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20936-09-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,3 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20936-09:
(7*2)+(6*0)+(5*9)+(4*3)+(3*6)+(2*0)+(1*9)=98
98 % 10 = 8
So 20936-09-8 is a valid CAS Registry Number.

20936-09-8Relevant articles and documents

Rhodium hydride (HRh(CO)(PPh3)3) and rhodium carbonyl (Rh4(CO)8L4) complexes obtained by reaction of Rh(acac)(CO)(L) type complexes with methanol and formaldehyde

Trzeciak, A. M.,Ziolkowski, J. J.

, p. 239 - 244 (1992)

Rhodium(I) complexes of Rh(acac)(CO)(L) type (where L = P(OMe)3, P(OEt)3, P(OPh)3, P(O-o-MeC6H4)3, PPh3, P(p-MeC6H4)3, PMePh2, AsPh3) react with alcohols and formaldehyde.In absence of free ligand (L) only carbonyl complexes of formula Rh4(CO)8(L)4 (or Rh

Protonation of cobalt, rhodium, and iridium hydrides with fluorocarbon acids. Synthesis, reactivity, and dynamic properties of (Ph3P)3Rh+ and its derivatives

Siedle,Newmark,Howells

, p. 2473 - 2478 (2008/10/08)

Protonation of a variety of Co, Rh, and Ir hydrides with the fluorocarbon acids H2C(SO2CF3)2, PhCH(SO2CF3)2, HN(SO2CF3)2, H2C(SO2C8F17)2, and C8F17SO3H is reported. The Co and Ir hydrides form cationic dihydrides. Protonation of (Ph3P)4RhH affords [(Ph3P)3Rh][HC(SO2CF3)2]. The stereochemical nonrigidity of [(Ph3P)3Rh]+ in solution has been characterized by 31P DNMR. Reactions of this 14-electron Rh(I) compound are described, including the solid-state carbonylation to yield [(Ph3P)3Rh(CO)2] [HC(SO2CF3)2]. Carbon monoxide in the dicarbonyl salt is labile, and it dissociates in solution to give [(Ph3P)3Rh(CO)] [HC(SO2CF3)2]. Fluorocarbon acids having long-chain perfluoroalkyl groups are useful in synthesizing salts that have high solubility in aromatic hydrocarbons.

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