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721399-48-0

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721399-48-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 721399-48-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,3,9 and 9 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 721399-48:
(8*7)+(7*2)+(6*1)+(5*3)+(4*9)+(3*9)+(2*4)+(1*8)=170
170 % 10 = 0
So 721399-48-0 is a valid CAS Registry Number.

721399-48-0Upstream product

721399-48-0Downstream Products

721399-48-0Relevant articles and documents

Cationic half-sandwich ruthenium(II) complexes with cyclopentadienyl- phosphine ligands

Doppiu, Angelino,Englert, Ulli,Salzer, Albrecht

, p. 435 - 441 (2008/10/08)

The reaction of [Ru(η3:η3-C 10H16)Cl2]2 (1) with the Cp-linked phosphine ligands Ln (C5H5-CH 2CHRPR′2; R=H, R′=Ph, n=1; R=Ph, R′=Ph, n=2), in a 5:1 mixture of acetonitrile-ethanol and in the presence of Li 2CO3 and KPF6 affords the cationic half-sandwich ruthenium(II) complexes [{η5-C5H 4-CH2CHRPR′2-κP}Ru(CH 3CN)2]·[PF6] (4) and (5). Both complexes have been characterized in the solid state by an X-ray structure analysis. In contrast, the reaction between 1 and L3 (R=Ph, R′=o-xylyl) affords the cationic sandwich compound [{η 5:η6-C5H4- CH2CHPhPR′2}Ru]·[PF6] (7), in which one arene substituent of the phosphine is η6-coordinated to the metal and the phosphorus remains pendant. Treatment of 5 with tertiary phosphines (PR″3, R″=i-Pr, Ph, Cy) affords a mixture of the diastereomers [L2Ru(CH3CN)PR″3] +. The diastereoselectivity observed depends on the steric bulkiness of the phosphines and on the reaction conditions.

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