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1755-63-1

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1755-63-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1755-63-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,5 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1755-63:
(6*1)+(5*7)+(4*5)+(3*5)+(2*6)+(1*3)=91
91 % 10 = 1
So 1755-63-1 is a valid CAS Registry Number.

1755-63-1Relevant articles and documents

Synthesis and characterization of perhalophenyltin derivatives. Study of their reactivity toward phosphine gold(I) chlorides

Bojan, R. Vilma,López-De-Luzuriaga, José M.,Monge, Miguel,Olmos, M. Elena

, p. 2385 - 2393 (2010/11/03)

The (perhalophenyl)tin derivatives [SnR4] (1-3) and [SnR 3Cl] (4-6) (R = C6F5, C6F 3Cl2, C6Cl5) were prepared from SnCl4 and LiR or [SnR4] in the appropriate molar ratio, while the dinuclear complexes [SnR3]2 (7-9) were obtained by treatment of [SnR3Cl] with potassium under toluene reflux. Complexes 2, 6·0.5toluene and 7 were structurally characterized, the latter displaying a Sn-Sn bond of 2.808(7) , which indicates a strong tin-tin bond with covalent character in solid state. The hexaaryldistannanes 7-9 undergo transmetallation reactions with gold(I) derivatives, such as [AuCl(PPh 3)] or [(AuCl)2(μ-dppm)], affording the neutral species [AuR(PPh3)] (10-12) or [(AuR)2(μ-dppm)] (13-15) or the ionic product [Au3Cl2(μ-dppm)2][Sn(C 6F5)3Cl2] (16). The crystal structures of 14·CH2Cl2, 15 and 16·2CH 2Cl2 were determined by X-ray diffraction, the latter showing a Au3 nearly equilateral triangular core in the cation with gold-gold contacts of 3.128(7) and 3.227(12) . The main difference between the molecular structures of 14·CH2Cl2 and 15 (both of them displaying intramolecular gold-gold contacts of 3.142(6) and 3.160(4) , respectively) is the presence of an intermolecular Au?Au interaction of 3.2126(8) in the case of the C6F3Cl2 complex that gives rise to a tetranuclear unit.

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