一种具有新型多核2,6-二乙酰基吡啶双{[2-(羟基亚氨基)丙酰基]腙}配体不对称配位的平面正方形镍(II)配合物。
A square-planar Ni(II) complex with an asymmetric coordination of a novel polynucleative 2,6-diacetylpyridine bis{[2-(hydroxyimino)propanoyl]hydrazone} ligand.
作者信息
Plutenko Maxym V, Moroz Yurii S, Sliva Tetyana Yu, Haukka Matti, Fritsky Igor O
机构信息
Department of Chemistry, National Taras Shevchenko University, Volodymyrska Street 64, 01601 Kyiv, Ukraine.
出版信息
Acta Crystallogr C. 2008 Mar;64(Pt 3):m137-9. doi: 10.1107/S0108270108003065. Epub 2008 Feb 16.
The title compound, (2,6-diacetylpyridine bis{[2-(hydroxyimino)propanoyl]hydrazone}(2-))nickel(II) dimethyl sulfoxide solvate monohydrate, [Ni(C(15)H(17)N(7)O(4))] x C(2)H(6)OS x H(2)O, represents the first example of square-planar N(4) coordination via N atoms with four different functions, namely amide, azomethine, hydroxyimino and pyridine. The coordination polyhedron of the central Ni atom has a slightly distorted square-planar geometry. The 2,6-diacetylpyridine bis{[2-(hydroxyimino)propanoyl]hydrazone} ligand forms one six- and two five-membered chelate rings, and a pseudo-chelate ring through an intramolecular hydrogen bond with an amide group as donor and a deprotonated hydroxyimino group as acceptor, resulting in a pseudomacrocyclic arrangement.
标题化合物，（2,6 - 二乙酰基吡啶双{[2 - （羟基亚氨基）丙酰基]腙}(2 - )）镍（II）二甲基亚砜溶剂合物一水合物，[Ni(C₁₅H₁₇N₇O₄)]·C₂H₆OS·H₂O，是通过具有四种不同功能的N原子（即酰胺、偶氮甲碱、羟基亚氨基和吡啶）形成平面正方形N₄配位的首个实例。中心Ni原子的配位多面体具有略微扭曲的平面正方形几何构型。2,6 - 二乙酰基吡啶双{[2 - （羟基亚氨基）丙酰基]腙}配体形成一个六元环和两个五元螯合环，以及一个通过分子内氢键形成的假螯合环，其中酰胺基团作为供体，去质子化的羟基亚氨基基团作为受体，形成一种假大环排列。
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