CRYSTAL AND MOLECULAR-STRUCTURES OF (1,8-BIS(2-PYRIDYL)-3,6-DITHIAOCTANE)COPPER(I) HEXAFLUOROPHOSPHATE AND PERCHLORATO(1,8-BIS(2-PYRIDYL)-3,6-DITHIAOCTANE)COPPER(II) PERCHLORATE - STEREODYNAMICS OF THE COPPER(II)-COPPER(I) COUPLE

The crystal and molecular structures of the title compounds have been determined by single-crystal X-ray diffraction using counter data to R values of 0.061 for the copper(I) complex (1) and 0.068 for the copper(II) complex (2). The unit cell constants for 1 are a = 8.219 (1) A, b = 22.543 (3) A, and c = 11.044 (1) A; the space group is Pbcn, and Z = 4. For 2, a = 8.902 (1) A, b = 21.343 (2) A, c = 11.879 (1) A, 0 = 108.03 (1)°, the space group is P2t/c, and Z = 4. Coordination about 1 is tetrahedral and about 2 is square pyramidal. © 1979, American Chemical Society. All rights reserved.