title: Tricarbonyl(eta6-chlorobenzene)chromium.
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).
authors.affiliation: Chemistry Department, UMIST, PO Box 88, Manchester M60 1QD, England. alan.brisdon@umist.ac.uk
authors.forename: Alan K
authors.initials: AK
authors.lastname: Brisdon
authors.forename: Ian R
authors.initials: IR
authors.lastname: Crossley
authors.forename: Robin G
authors.initials: RG
authors.lastname: Pritchard
authors.forename: John E
authors.initials: JE
authors.lastname: Warren