Khalaj Mehdi, Dehghanpour Saeed, Mahmoudi Ali, Khalaj Arash, Lough Alan J
Department of Chemistry, Islamic Azad University, Buinzahra Branch, Qazvin, Iran.
Acta Crystallogr Sect E Struct Rep Online. 2012 Jul 1;68(Pt 7):m920-1. doi: 10.1107/S1600536812026347. Epub 2012 Jun 16.
The title compound, [Cu₂Cl₄(C₁₄H₁₄N₂)₂], is a new polymorph of a previously reported compound [Dehghanpour et al. (2011 ▶). Acta Cryst. E67, m1296]. The current polymorph was obtained from an acetonitrile solution of the title compound. Like the first polymorph, it is monoclinic (space group P2₁/c). The unique Cu(II) ion in the title centrosymmetric dinuclear complex is in a distorted trigonal-bipyramidal coordination environment formed by the bis--chelating N-heterocyclic ligand, two bridging Cl ligands and one terminal Cl ligand. In the crystal, weak C-H⋯Cl hydrogen bonds are observed in addition to π-π stacking inter-actions, with a centroid-centroid distance of 3.6597 (18) Å.
标题化合物[Cu₂Cl₄(C₁₄H₁₄N₂)₂]是先前报道的化合物[Dehghanpour等人（2011年▶）。Acta Cryst. E67, m1296]的一种新的多晶型物。当前的多晶型物是从标题化合物的乙腈溶液中获得的。与第一种多晶型物一样，它是单斜晶系（空间群P2₁/c）。标题中心对称双核配合物中独特的Cu(II)离子处于由双螯合N-杂环配体、两个桥连Cl配体和一个端基Cl配体形成的扭曲三角双锥配位环境中。在晶体中，除了π-π堆积相互作用外，还观察到弱的C-H⋯Cl氢键，质心间距为3.6597 (18) Å。
