Synthesis and Structural Characterizations of New Coordination Polymers Generated by the Interaction Between the Trinuclear Triangular SBU [Cu-3(mu(3)-OH)(mu-pz)(3)](2+) and 4,4 '-Bipyridine. 3 degrees

The reactions of 4,4'-bipyridine with selected trinuclear triangular copper(II) complexes, [Cu-3(mu(3)-OH)(mu-pz)(3)(RCOO)(2)L-x], [pz = pyrazolate anion, R = CH3(CH2)(n) (2 <= n <= 5); L = H2O, MeOH, EtOH] yielded a series of ID coordination polymers (CPs) based on the repetition of [Cu-3(mu(3)-OH)(mu-pz)(3)] secondary building units joined by bipyridine. The CPs were characterized by conventional analytical methods (elemental analyses, ESI-MS, IR spectra) and single crystal XRD determinations. An unprecedented ID CP, generated through the bipyridine bridging hexanuclear copper clusters moieties, two 1D CPs presenting structural analogies, and two monodimensional tapes having almost exactly superimposable structures, were obtained. In one case, the crystal packing makes evident the presence of small, not-connected pores, accounting for ca. 6% of free cell volume.