Sheets of tetranuclear Ni(II) [2 × 2] square grids structure with infinite orthogonal two-dimensional water-chlorine chains

Moustapha-Sow M.; Diouf O.; Gaye M.; Salam-Sall A.; Castro G.; Pérez-Lourido P.; Valencia L.; Caneschi A.; Sorace L.

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Sheets of tetranuclear Ni(II) [2 × 2] square grids structure with infinite orthogonal two-dimensional water-chlorine chains

机译：具有无限正交二维水-氯链的四核Ni（II）[2×2]方格网片

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The tetranuclear nickel(II) complex [Ni_4(HL)_4]Cl_4·4H_2O {H_2L = 1,5-bis[1-(pyridin-2-yl) ethylidene]carbono hydrazone} has been prepared by reaction in methanol of nickel(II) chloride and H2L in 2:1, M:L molar ratio. The single crystal X-ray diffraction analysis revealed a 2 × 2 square grid of tetramer units with the metal ions joined in pairs by the alkoxide oxygen atom in the μ2 mode with octahedral geometry around each nickel ion. The supramolecular structure shows that the tetramer units are linked through edge-to-face (T shape) C-H?π interactions, forming sheets with hydrophobic- (occupied by infinite 2D water-chlorine chains) and hydrophilic- (occupied by chlorine anions) channels. Variable temperature magnetic studies suggest an antiferromagnetic coupling between the adjacent Ni(II) centers with a coupling constant of J = -6.6 cm~(-1).

机译：通过在镍的甲醇中反应制得四核镍（II）配合物[Ni_4（HL）_4] Cl_4·4H_2O {H_2L = 1,5-双[1-（吡啶-2-基）亚乙基]碳} II）氯化物与H2L的摩尔比为2：1，M：L。单晶X射线衍射分析显示，四聚体单元的2×2正方形网格中，金属离子通过醇盐氧原子以μ2模式成对连接，每个镍离子周围具有八面体几何形状。超分子结构表明四聚体单元通过边对面（T形）CH？π相互作用连接，形成具有疏水性（由无限的二维水-氯链占据）和亲水性（由氯阴离子占据）通道的片材。可变温度磁研究表明，相邻的Ni（II）中心之间存在反铁磁耦合，耦合常数为J = -6.6 cm〜（-1）。

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《Crystal growth & design》 |2013年第10期|共5页
作者
Moustapha-Sow M.; Diouf O.; Gaye M.; Salam-Sall A.; Castro G.; Pérez-Lourido P.; Valencia L.; Caneschi A.; Sorace L.;
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正文语种 eng
中图分类 54.9;
关键词
Antiferromagnetic coupling; Coupling constants; Magnetic studies;

机译：反铁磁耦合;耦合常数;磁性研究;

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机译：具有无限正交二维水-氯链的四核Ni（II）[2×2]方格网片
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Sheets of tetranuclear Ni(II) [2 × 2] square grids structure with infinite orthogonal two-dimensional water-chlorine chains

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