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. 2003 Aug;59(Pt 8):m322-4.
doi: 10.1107/s0108270103013787. Epub 2003 Jul 22.

Tricarbonyl(eta6-chlorobenzene)chromium

Alan K Brisdon  1 , Ian R Crossley, Robin G Pritchard, John E Warren
Affiliations

Tricarbonyl(eta6-chlorobenzene)chromium

Alan K Brisdon et al. Acta Crystallogr C. 2003 Aug.

Abstract

The title compound, [Cr(C(6)H(5)Cl)(CO)(3)], is the first group 6 tricarbonyl eta(6)-monohaloarene compound to be structurally characterized. It adopts a classic piano-stool structure, with the Cr(CO)(3) tripod assuming a syn-eclipsed conformation relative to the arene ring (varphi = 2.0 degrees ). The extended structure is dominated by intermolecular pi.H interactions (H.ring centroid = 2.94 A) and non-classical hydrogen bonds between carbonyl and arene moieties (O.H = 2.50-2.58 A).

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