Sheets of Tetranuclear Ni(II) [2 脳 2] Square Grids Structure with Infinite Orthogonal Two-Dimensional Water鈥揅hlorine Chains

详细信息    查看全文

• 作者：Mouhamadou Moustapha-Sow ; Ousmane Diouf ; Mohamed Gaye ; Abdou Salam-Sall ; Goretti Castro ; Paulo P茅rez-Lourido ; Laura Valencia ; Andrea Caneschi ; Lorenzo Sorace
• 刊名：Crystal Growth & Design
• 出版年：2013
• 出版时间：October 2, 2013
• 年：2013
• 卷：13
• 期：10
• 页码：4172-4176
• 全文大小：344K
• 年卷期：v.13,no.10(October 2, 2013)
• ISSN：1528-7505

文摘

The tetranuclear nickel(II) complex [Ni₄(HL)₄]Cl₄路4H₂O {H₂L = 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 脳 2 square grid of tetramer units with the metal ions joined in pairs by the alkoxide oxygen atom in the 渭₂ 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鈥揌路路路蟺 interactions, forming sheets with hydrophobic- (occupied by infinite 2D water鈥揷hlorine 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 = 鈭?.6 cm^鈥?.