ChemInform Abstract: SYNTHESIS OF SUBSTITUTED BIS(BENZENE)CHROMIUM NITRILES USING CHROMIUM VAPORS

Сергеев, В. А.; Коган, А. С.; Uralets, I. A.; Vasil’kov, A. Yu.; Zakurin, N.V.; Yur'eva, L. P.

doi:10.1002/chin.198436271

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“…The introduction of pentane into the reaction mixture immediately after the synthesis decreased the yield of 1,3,5-triphenyltriazine. Conditions for the isolation and analysis of the reaction products are presented elsewhere (Sergeev et al, 1984). Product (3) was eluted with C 6 H 6 /petroleum ether, as a yellow band, and recrystallized from a C 6 H 6 /pentane mixture at 261 K.…”

Section: General Synthetic Proceduresmentioning

confidence: 99%

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Substituent effects in bis(arene)chromium compounds containing a CN group in the aromatic ring

Khrustalev

Vasil’kov

Antipin

2005

Acta Crystallogr Sect B

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The crystal structures of Cr(PhCN)(2) (2), (PhCN)Cr(PhCH(3)) (3) and (PhCN)Cr(PhCF(3)) (4) prepared by means of the Metal Vapor Synthesis (MVS) technique have been determined. Compounds (2), (3) and (4) crystallize as discrete sandwich complexes having intrinsic C(2v)(mm2), C(s)(m) and C(1)(1) symmetries, respectively. The X-ray diffraction study has revealed a synperiplanar conformation for (2) and (3), and a synclinal conformation for (4) with a torsion angle (C(ipso)1-Centroid1-Centroid2-C(ipso)2) of phi = 63.5 degrees . The angles between the ligand planes are 2.2, 3.9 and 1.8 degrees , respectively. The Cr atom is slightly (by 0.04-0.06 A) displaced towards the substituents from the line connecting the centers of the opposite aromatic rings. The Cr-C(ipso) distances are 2.115 (2)-2.137 (2), 2.112 (2) and 2.185 (3) A for CN, CF(3) and CH(3) groups, respectively. The CN groups as well as the H atoms lie out of the C(6) ring planes and are bent towards the Cr atom, but the C atom of the CH(3) group also lying out of the C(6) ring plane is bent away from the Cr atom. The C atom of the CF(3) group is essentially coplanar to the C(6) ring plane. There are no unusual intermolecular contacts in the structures of (2)-(4).

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Section: General Synthetic Proceduresmentioning

confidence: 99%

“…We have previously described the synthesis of a series of non-symmetric complexes (C 6 H 5 CN)Cr(C 6 H 5 R), where R = CN (2), H, CH 3 (3), OCH 3 , COCH 3 , Cl, F and CF 3 (4) (Nesmeyanov et al, 1981;Vasil'kov et al, 1982;Sergeev et al, 1984). Their ionization potentials and behavior in redox processes were studied (Yur'eva et al, 1987).…”

Section: Introductionmentioning

confidence: 99%

Substituent effects in bis(arene)chromium compounds containing a CN group in the aromatic ring

Khrustalev

Vasil’kov

Antipin

2005

Acta Crystallogr Sect B

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ChemInform Abstract: SYNTHESIS OF SUBSTITUTED BIS(BENZENE)CHROMIUM NITRILES USING CHROMIUM VAPORS

Abstract: Metallisches Chrom wird ineinem elektrischen Ofen in einem Körbchen aus Wolfram‐Draht verdampft.

Cited by 1 publication

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Substituent effects in bis(arene)chromium compounds containing a CN group in the aromatic ring

Substituent effects in bis(arene)chromium compounds containing a CN group in the aromatic ring

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