STRUCTURE OF BIS(1,10-PHENANTHROLINE)COPPER(II) BIS(HEXAFLUOROPHOSPHATE)

[Cu(C12H8N2)2][PF6]2, (I), M(r) = 713.89, monoclinic, C2/c, a = 17.594 (4), b = 12.603 (3), c = 12.539 (3) angstrom, beta = 111.90 (2)-degrees, V = 2579.72 angstrom 3, Z = 4, D(m)(flotation) = 1.810 (6), D(x) = 1.83 Mg m-3, lambda-(Mo K-alpha) = 0.71069 angstrom, mu = 1.017 mm-1, F(000) = 1420, room temperature, R = 0.049 for 1723 unique observed reflections. The crystal contains [Cu(phen)2]2+ cations (phen = 1,10-omicron-phenanthroline) and [PF6]- anions. The cation involves a compressed tetrahedral CuN4 chromophore and lies on a crystallographic twofold axis of symmetry. The two independent anions are also in special positions of twofold symmetry, with near octahedral stereochemistry, and with the shortest Cu...F distances > 2.75 angstrom, they are too long even for weak semi-coordination.