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142867-89-8

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142867-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142867-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,6 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 142867-89:
(8*1)+(7*4)+(6*2)+(5*8)+(4*6)+(3*7)+(2*8)+(1*9)=158
158 % 10 = 8
So 142867-89-8 is a valid CAS Registry Number.

142867-89-8Downstream Products

142867-89-8Relevant articles and documents

Synthesis and structural characterization of metallacarboranes containing bridged dicarbollide ligands

Gomez, Frank A.,Johnson, Stephen E.,Knobler, Carolyn B.,Hawthorne, M. Frederick

, p. 3558 - 3567 (2008/10/08)

The synthesis and characterization of a family of carbon-bridged metallacarboranes of the type [7,7′-μ-1,n-CnH2n-(7,8-C2B 9H10)2M]- (n = 3, M = Co3+ (14); n = 4, M = Co3+ (15), Fe3+ (16), Ni3+ (17a), Cr3+ (18); n = 5, M = Co3+ (19)) and [7,7′-μ-1,5-TosN(CH2CH2-)2-(7,8-C 2B9H10)2M]- (M = Co3+ (20), Fe3+ (21)) are described. In each instance, meso and dl isomers were obtained from the reaction of the diastereomeric bridged carborane precursors and metal halide. The tosylated derivatives were separated into meso and dl isomers by HPLC techniques, and all diastereomeric metallacarboranes were spectroscopically characterized. Compounds 14-16 and 17b (Ni4+) have been structurally characterized by single-crystal X-ray diffraction. Compound 14 crystallizes in the triclinic space group P1 with a = 10.056 (8) A?, b = 11.861 (9) A?, c = 17.896 (11) A?, α = 96.20 (2)°, β = 96.36 (3)°, γ = 111.20 (3)° V = 1952 A?3, Z = 2, and R = 0.089. Compound 15 crystallizes in the triclinic space group P1 with a = 9.979 (8) A?, b = 11.769 (1) A?, c = 17.640 (1) A?, α = 84.46 (2)°, β = 83.61 (2)°, γ = 112.79 (2)°, V = 1876 A?3, Z = 2, and R = 0.054. Compound 16 crystallizes in the orthorhombic space group B2cb (standing setting Aba2) with a = 9.616 (4) A?, b = 10.768 (4) A?, c = 18.326 (7) A?, V = 1897 A?3, Z = 4, and R = 0.027. Compound 17b crystallizes in the monoclinic space group C2/c with a = 21.726 (5) A?, b = 9.906 (2) A?, c = 35.767 (9) A?, β = 103.04 (9)°, V = 7499 A?3, Z = 8, and R = 0.090. The relationship between bridge length and complex formation is examined.

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