二水合（2,2'-联吡啶）双（3-羧基-吡嗪-2-羧基）铜（II）
(2,2'-Bipyridine)bis-(3-carboxy-pyrazine-2-carboxyl-ato)copper(II) dihydrate.
作者信息
Aghabozorg Hossein, Parvizi Mahdieh, Sadrkhanlou Elahe
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2008 Jul 26;64(Pt 8):m1067. doi: 10.1107/S1600536808022885.
The title six-coordinated distorted octa-hedral complex, [Cu(C(6)H(3)N(2)O(4))(2)(C(10)H(8)N(2))]·2H(2)O, consists of two 3-carboxy-pyrazine-2-carboxyl-ate anions and one 2,2'-bipyridine ligand. There is a twofold rotation axis positioned at the Cu(II) center. The N atoms of the pyrazine ring occupy the axial positions and two proton-transferred O atoms of tbe acid together with the two N atoms of the 2,2'-bipyridine ligand complete the equatorial plane. The inter-actions existing in the crystal structure are inter-molecular O-H⋯O hydrogen bonds, and C-H⋯O and C-O⋯π inter-actions (O⋯π =3.145 Å, C-O⋯π = 149.75°).
标题为六配位扭曲八面体配合物[Cu(C₆H₃N₂O₄)₂(C₁₀H₈N₂)]·2H₂O，由两个3-羧基-吡嗪-2-羧酸根阴离子和一个2,2'-联吡啶配体组成。在Cu(II)中心处有一个二重旋转轴。吡嗪环的N原子占据轴向位置，酸的两个质子转移的O原子与2,2'-联吡啶配体的两个N原子共同构成赤道平面。晶体结构中存在的相互作用为分子间O-H⋯O氢键以及C-H⋯O和C-O⋯π相互作用（O⋯π = 3.145 Å，C-O⋯π = 149.75°）。
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