CuW(py)(2)(H2O)(2)O2F4 and CuW(py)(4)O2F4

Two new Cu-II/W-VI oxyfluorides, catena-poly[(trifluoro-oxotungsten)-mu-fluoro-[diaquabis(pyridine-N)copper]-mu-oxo] or catena-poly[(difluoro-cis-dioxotungsten)-mu-fluoro-[diaquabis(pyridine-N)copper]-mu-fluoro], [CuW-O2F4(C5H5N)(2)(H2O)(2)], (I), and catena-poly[(trifluoro-oxotungsten) -mu-fluoro-[tetrakis(pyridine-N)copper]-mu-oxo] or catena-poly[(difluoro-cis-dioxotungsten)-mu-fluoro-[tetrakis(pyridine-N)copper]-mu-fluoro], [CuWO2F4(C5H5N)(4)], (II), have been synthesized. The first complex (I), contains one-dimensional chains of alternating [Cu(py)(2)(H2O)(2)(O/F)(2/2)](0.66+) cations and [W(O/F)(4)(O/F)(2/2)](0.66-) anions. The corner-linked octahedra form infinite and parallel chains that run along the b axis. The second compound, (II), contains one-dimensional chains of alternating [Cu(py)(4)(O/F)(2/2)](0.66+) cations and [W(O/F)(4)(O/F)(2/2)](0.66-) anions. The corner-linked octahedra form infinite and non-intersecting chains that switch between [110] and [1 (1) over bar 0] every c/2.