Metal–carbonyl and metal–nitrosyl complexes. Part III. The crystal and molecular structure of cyclopentadienyldinitrosylchromium chloride

Abstract

Cyclopentadienyldinitrosylchromium chloride crystallises in the orthorhombic system, space group P2₁2₁2₁, with four molecules of C₅H₅ClCrN₂O₂ in a cell of dimensions a= 10·79, b= 12·24, c= 5·95 Å. After Fourier and least-squares refinement of the atomic parameters, the final discrepancy factor is 9·8% over 744 independent reflexions. The cyclopentadienyl ring is randomly distributed over two orientations in the same plane. The Cr–N bonds, of average length 1·711 Å, have considerable double-bond character. The CrNO groupings depart significantly from linearity, with valency angles of 166·4 and 170·8°.