SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF [H-2(DIAZA-18-CROWN-6)][CUCL4]CENTER-DOT-H2O

A protonated diaza-18-crown-6 copper(II) chloride complex was crystall ized from a mixture of YCl3, BaCl2, and Cu(C2H3O2)(2) in 3:1 CH3OH/CH3 CN. [H-2(diaza-18-crown-6)][CuCl4]. H2O crystallizes in the centric sp ace group, <P(1)over bar> with: a = 7.429(2) Angstrom, b = 10.099(3) A ngstrom, c = 14.779(9) Angstrom, alpha = 83.76(5)degrees, beta = 81.70 (3)degrees, gamma = 75.59(3)degrees, and D-calc = 1.53 g/cm(3) for Z = 2. The [CuCl4](2-) anion is a distorted tetrahedron and is hydrogen-b onded to two unique diazacrown molecules. The bonding results in zig-z ag contacts that form a polymeric network diagonally oriented in the b e plane. One of the two unique azacrown molecules maintains a slightly distorted D-3d conformation stabilized by hydrogen bonding from a dis ordered water molecule and to the [CuCl4](2-) anion. The hydrogen bond ing of the disordered water molecule bridges one form of the protonate d macrocycle and forms polymeric chains along the a direction. The oth er unique azacrown molecule adopts a distorted C-2 configuration and h as no interactions with the water molecule.