Guest-host copper(I, II) complex {Rb-11[Cu-2(1)(H2O)(2)]}[(Cu15Cl24)-Cl-1((CuCl6)-Cl-II)]. Effect of the nature of the [Cu-2(1)(H2O)(2)](2+) guest oncrystal structure formation

The crystals of (Rb-11[Cu-2(1)(H2O)(2)])[(Cu15Cl24)-Cl-1((CuCl6)-Cl-II)] (I ) formed in the RbCl-CuCl-H2O-(O-2, C2H2) system were studied by X-ray diff raction analysis and ESR spectroscopy. The cell is monoclinic, space group B2/m, Z = 2. a = 24.787(3), b = 13.126(2), c = 11.318(5) Angstrom, gamma = 122.36(1)degrees (DARCH automatic diffractometer, lambda (MoKalpha)). The c rystal structure of compound I is a guest-host type structure consisting of the ([Cu(15)(1)C1(24)((CuCl6)-Cl-II)](13-))(n) anion layers oriented perpe ndicularly to the [010] direction and containing large octahedral cavities (edge length approximate to 12 Angstrom) with a discrete [(CuCl6)-Cl-II] oc tahedron lying inside the cavity. The Rb+ cations and the charged [Cu-2(1)( H2O)(2)](2+) guest species lie between the anion layers. The effect of the nature of rite guest on host structure formation is considered using compou nds I and Rb-11[(Cu15Cl16Br6)-Cl-1((CuCl6)-Cl-II). Cu-C=CH] as examples.