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819800-20-9

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819800-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 819800-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,9,8,0 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 819800-20:
(8*8)+(7*1)+(6*9)+(5*8)+(4*0)+(3*0)+(2*2)+(1*0)=169
169 % 10 = 9
So 819800-20-9 is a valid CAS Registry Number.

819800-20-9Downstream Products

819800-20-9Relevant articles and documents

Synthesis and characterisation of [(η6-cymene)Ru(L)X 2] compounds: Single crystal X-ray structure of [(η6- cymene)Ru(P{OPh}3)Cl2] at 203 K

Hodson, Emma,Simpson, Stephen J.

, p. 2695 - 2707 (2004)

Treatment of the chloro bridged dimer {[(η6-cymene)RuCl] 2(μ-Cl)2} (1) with the donor molecules in hot hexane causes bridge splitting reactions that produce the monomeric compounds [(η6-cymene)Ru(L)Cl2]. Treatment of the chloro bridged dimer {[(η6-cymene)RuCl]2(μ-Cl)2} (1) with the donor molecules P(OPh)3, P(OMe)3, PPh 3, PMe3, CO, SMe2, CNtBu and CNTos in hot hexane causes bridge splitting reactions that produce the monomeric compounds [(η6-cymene)Ru(L)Cl2], (4)-(11), respectively. Use of the chiral isonitrile S(-)-α-methylbenzylisonitrile produced the corresponding complex 12. The diiodo analogues, 13-15, were prepared similarly from {[(η6-cymene)RuI]2(μ-I) 2} (3) for P(OPh)3, P(OMe)3 and PPh 3, respectively. Insertion of tin(II) chloride into both metal-chlorine bonds was observed for [(η6-cymene)Ru(P{OMe} 3)Cl2] (5), while only monosubstitution was observed for [(η6-cymene)Ru(PPh3)Cl2] (6). Halide abstraction in the presence of a substrate reaction has been used to prepare some selected cationic compounds which contain an asymmetric ligand environment. Reaction of {[(η6-cymene)RuCl]2(μ-Cl)2} with 1,2-bis(diphenylphosphino)-ethane under ionising conditions produced the cation [(η6-cymene)Ru(dppe)Cl]PF6 (20). Selected compounds have been examined by {13C-1H} heteronuclear correlation and {1H-1H} COSY and NOESY experiments. The structure of [(η6-cymene)Ru(P{OPh}3)Cl2] ? CH2Cl2 (4) has been determined at -70°C.

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