Structural aspect of the interaction of copper(I) chloride with propargyl alcohol in aqueous anilinium chloride

Crystals of the formula (An)(3)[Cu4Cl7] (I) and (AN)(3)[Cu8Cl10(C drop CCH2 OH)]. 2H(2)O(II) were obtained in the system AnCl-CuCl-H2O-HC drop CCh(2)OH [An is the anilinium cation (C6H5NH3+)] and studied by X-ray diffraction a nalysis (DARCH diffractometer, lambda MoKalpha, theta/2 theta scan mode; 11 21 and 2433 unique reflections with F greater than or equal to 4 sigma(F), R = 0.064 and 0.44 for I and II, respectively). Crystals I are orthorhombic , space group Pbnm, Z= 4, a = 21.65(1), b = 11.006(5), c = 11.068(6) Angstr om; crystals II are triclinic, space group P (1) over bar, Z = 2, a = 14.94 (1), b = 12.242(8), c = 11.341(7) Angstrom, alpha = 106.77(5), beta = 92.05 (6), gamma = 113.38(5)degrees. In contrast to I, the anionic copper acetyle nide pi-complex contains the propargylium ion whose terminal C drop C group acts as a double bridging pi, sigma-ligand simultaneously bonded to four c opper(I) atoms. Structural genesis of {[Cu4Cl7](3)(-)}n (I) and {[CugCl(10) (C = CCH2OH)](3)(-)}n (II) anions is considered.