Resumo

BRIT0, IVÁN et al. X-RAY CRYSTALLOGRAPHIC STRUCTURAL STUDY ON A NEW COORDINATION POLYMER: CATENA-di-μCHLORO-BIS[(di-2-PYRIDYLDISULFIDE- k² N, N') COPPER(I)]. J. Chil. Chem. Soc. [online]. 2009, vol.54, n.2, pp.151-153. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072009000200012.

In title compound, [CuC1(C₁₀H₈N₂S₂)]_n, (I) each Cu(I) ion coordinates to two nitrogen atoms from two different ligands and to two chloro ions which bridge to another Cu(I) to complete a planar four-membered Cu₂Cl₂ ring.The Cu⁺ coordination geometry is best described as a slightly distorted tetrahedron. The structure consists of CuCl cores connected by 2, 2'-dypyridyldisulfide ligand and form a two-dimensional extended polymeric network in which the 2, 2'-dipyridyldisulfide ligand bridges Cu atoms. The title compound is isostructural with di-u-chlorido-bis[(di-2-pyridyldisulnde-K² N, N') copper(I)], (II)', which is a zero-dimensional binuclear compound. The two structures differ due conformational flexibility of ligand, which have axial conformation in (I) and equatorial conformation in (II), torsion angles S-S-C-N (axial ring) 168.8(4)°; for (I) and 72.0(3)° for (II) respectively.

Palavras-chave : Coordination polymes; disulfides; x-ray diffraction.

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