| Abstract |
Two conformational polymorphs of trans-chlorido(phenyl)bis(triphenylphosphine) nickel(II), [Ni(C6H5)Cl(C18H15P)(2)], (1), viz. orange needle-shaped crystals (form I) and brown prism-shaped crystals (form II), were obtained under different crystallization conditions from a mixture of toluene and n-hexane, and characterized by single-crystal X-ray diffraction at low temperature. These two forms were compared with that published previously [Zeller, Herdtweck \& Strassner (2003). Eur. J. Inorg. Chem. pp. 1802-1806], characterized at room temperature. Additionally, blue-green prisms of a 1:1 co-crystal of complex (1) with chloridobis(triphenylphosphine)nickel(I), (2), viz. trans-chlorido(phenyl) bis(triphenylphosphine) nickel( II)-chloridobis( triphenylphosphine) nickel(I) (1/1), [Ni(C6H5)Cl(C18H15P)(2)]center dot[NiCl(C18H15P)(2)], (3), were obtained concomitantly with form I. In forms I and II, as well as in the cocrystal, the overall crystal packings are determined by an energetic interplay between intramolecular torsions and weak intermolecular C-H center dot center dot center dot pi and C-H center dot center dot center dot Cl interactions. |
