Krawczyk Monika K, Krawczyk Marta S, Siczek Miłosz, Lis Tadeusz
University of Wrocław, Faculty of Chemistry, 14 Joliot-Curie St, 50-383 Wrocław, Poland.
Acta Crystallogr Sect E Struct Rep Online. 2012 Sep 1;68(Pt 9):m1174-5. doi: 10.1107/S1600536812035052. Epub 2012 Aug 15.
The title salt, (C(12)H(12)N(4)O(2))[ReCl(6)], consists of 2,2'-[(1E,2E)-1,2-bis-(hy-droxy-imino)-ethane-1,2-di-yl]dipyridinium cations and ReCl(6) anions which are both located on inversion centres. Each cation consists of a glyoxime moiety attached to two protonated pyridine rings in ortho positions. In the crystal, E,E isomers of the cation are observed which differ in the spatial arrangement of the pyridine rings. These rings are positionally disordered over two positions with site-occupancy factors of 0.786 (7) and 0.214 (7). The geometry of the cation is compared with that of a recently reported dipyridyl-glyoxime with the same configuration. The cations and anions are involved in a network of inter-molecular O-H⋯Cl, N-H⋯Cl and C-H⋯Cl hydrogen bonds.
标题盐(C(12)H(12)N(4)O(2))[ReCl(6)]由2,2'-[(1E,2E)-1,2-双-(羟基-亚氨基)-乙烷-1,2-二亚基]二吡啶鎓阳离子和[ReCl(6)]²⁻阴离子组成,二者均位于对称中心上。每个阳离子由一个连有两个处于邻位的质子化吡啶环的乙二肟部分组成。在晶体中,观察到阳离子的E,E异构体,其吡啶环的空间排列不同。这些环在两个位置上位置无序,占位因子分别为0.786 (7)和0.214 (7)。将该阳离子的几何结构与最近报道的具有相同构型的二吡啶基乙二肟的几何结构进行了比较。阳离子和阴离子通过分子间O-H⋯Cl、N-H⋯Cl和C-H⋯Cl氢键形成网络。