摘要:
Crystals of the pi-complex (2-AmpH)[CuCl(2)(HOCH(2) CCH(2)OH)] (2-AmpH(+) is the 2-aminopyridinium cation) were obtained by the reaction of 2-butyne-1,4-diol with CuCl in aqueous 2-aminopyridinium chloride solution and studied by X-ray diffraction: space group P (1) over bar, a= 7.172(4), b= 7.796(3), c = 11.60(9) angstrom, alpha = 99.75(6)degrees, beta = 96.53(7)degrees, gamma = 101.03(3)degrees, Z = 2. The crystals consist of individual anions [CuCl(2)(HOCH(2) CCH(2)OH)](-) and cations [2-AmpH](+). The pi-coordinated Cu(I) atoms of the complex anion have trigonal-planar surrounding of two chlorine atoms and C C bond of the 2-butyne-1,4-diol molecule. The alcohol groups form stable hydrogen bonds N-H center dot center dot center dot O (1.89 angstrom) and O-H center dot center dot center dot Cl (2.20 angstrom).