名称:
Syntheses and crystal structures of three one-dimensional copper(II) complexes constructed by salicylate and 4,4′-bipyridine: ladder, zig-zag, and linear polymeric assembly
摘要:
Syntheses and crystal structures of three new compounds {trans-[Cu(Hsal)(2)(4,4'-bipy)](DMF)}(n) (1), {cis-[Cu(Hsal)(2)(4,4'-bipy)](2H(2)O)}(n) (2), and [Cu-2(Hsal)(4)(4,4'-bipy)](n) (3) are reported. These three compounds have trans-, cis-, and dimer geometries bearing a common motif [Cu(Hsal)(2)(4,4-bipy)(n)] leading to ladder, zig-zag, and linear one-dimensional (1-D) networks, respectively. The Cu...Cu distances separated by 4,4'-bipy are different in these three compounds, which leads to an extension structure in compound 3 and a compact structure in compound 2. Conformations of 4,4'-bipy ligands in these three compounds are also different. In compound I there is stacking of the bidentate salicylate and the bridging salicylate from another molecule. There is also stacking of salicylate and 4,4'-bipy from another molecule in compound 2. (C) 2003 Elsevier B.V. All rights reserved.