Synthesis and crystal structure of the pi-complex 5CuCl center dot Si(O-CH2-CH=CH2)(4)

This paper discusses the results of synthesis and X-ray diffraction analysi s (DARCH single crystal diffractometer, MoKalpha radiation) of a pi -comple x of copper(1) chloride with tetraallyloxysilane 5CuCl . Si(O-CH2-CH=CH2)(4 ) (space group P4/n, a = 13.813(2), c = 5.9424(7) Angstrom, Z = 2). Structu ral data for other olefin complexes of copper(I) are used to analyze the st ructural effect of the restricted disordering of the guest molecule with co nservation of the high general symmetry of the structure introduced by the olefin molecule.