The crystal structures of
the title compounds have been determined by single-crystal X-ray diffraction
methods at 295 K, and refined by least-squares methods. Crystal data for [Cu(Cl4H12N2)2]
Br.H2O (1) are: monoclinic, P21/c, a 14.067(4), b 17.687(6), c 10.337(5) �, β 91.04(3)�, with R
0.038, R' 0.040 for 1855 'observed' reflections. Crystal data for [Cu(Cu14H12N2)2]
C1.2H2O (2) are: triclinic, P1, a
15.305(2), b 13.164(2), c 7.344(3) �, α 83.03(3), β
93.83(3), γ 108. 11260(3)�, with R 0.051, R' 0.053 for 1293 'observed'
reflections. Crystal data for [Cu(Cl4H12N2)2]
Br.H2O (3) are: triclinic, P1, a
7.619(2), b 11.967(3), c 15.534(3) �, α 71.26(1), β 82.13(1),
γ 86.86(2)�, with R 0.043, R' 0.052 for 2335 'observed' reflections. The
anionic and solvent species are uncoordinated in all three compounds. Cu-N bond
lengths range from 2.027(5) to 2.053(5) �. The copper(1) environment (CuN4)
in each complex shows considerable distortion from tetrahedral geometry. N-Cu-N
intraligand angles range from 81.0(2) to 83.0(2)�,
while N-Cu-N interligand angles range from 114.7(2)
to 135.2(2)�. The variation in interligand angles can
be described in terms of three independent rotations of ligand 2 about an
orthogonal axial system defined by ligand 1.