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Chromium, bis[(1,2,3,4,5,6-h)-methylbenzoate]-, also known as chromium(III) methylbenzoate, is a coordination compound consisting of a chromium(III) ion coordinated to two methylbenzoate ligands. Methylbenzoate is a derivative of benzoic acid, where a methyl group is attached to the benzene ring. In Chromium,bis[(1,2,3,4,5,6-h)-methylbenzoate]-, the chromium(III) ion is the central metal atom, and the two methylbenzoate ligands are bonded to it through their oxygen atoms, forming a complex. Chromium,bis[(1,2,3,4,5,6-h)-methylbenzoate]- is of interest in coordination chemistry and materials science, as it exhibits unique properties due to the interaction between the metal ion and the organic ligands.

1272-35-1

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1272-35-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1272-35-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,7 and 2 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1272-35:
(6*1)+(5*2)+(4*7)+(3*2)+(2*3)+(1*5)=61
61 % 10 = 1
So 1272-35-1 is a valid CAS Registry Number.

1272-35-1Downstream Products

1272-35-1Relevant academic research and scientific papers

Bis(aromat)chrom-Komplexe. Darstellung durch Cokondensation; IR-spektroskopische, cyclovoltammetrische und kinetische Untersuchungen

Brunner, Henri,Koch, Heinrich

, p. 65 - 83 (2007/10/02)

By cocondensation of Cr vapor, benzene and a substituted arene, in addition to bis(benzene)chromium(0), the compounds (arene)(benzene)chromium(0) (8a - 14a, 22a - 24a, 28a) and bis(arene)chromium(0) (15a - 21a, 25a - 27a, 29a) were synthesized.The complexes were oxidized to the corresponding bis(arene)chromium(I) iodides by titration with iodine solution.From the trend of the ν(C=O) frequencies in ester and keto substituents it follows that the (C6H6)Cr0 substituent is extremely electron donating, the (C6H6)CrI substituent, however, strongly electron withdrawing.In contrast, type and number of the substituents affect the redox potential Cr0/CrI irrespective of their arrangement at the bis(arene)chromium skeleton.The electron withdrawing character of the (C6H6)CrI-substituent is documented in a comparison of the base-catalyzed transesterification of free ang complexed methyl benzoate by rate differences of several powers of ten.The expected retardation of the transesterification of the corresponding chromium(0) complexes is outplayed by a chromium(I) catalysis.

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