The tetranuclear nickel(II) complex [Ni-4(HL)(4)]Cl-4 center dot 4H(2)O {H2L = 1,5-bis[1-(pyridin-2-y)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 x 2 square grid of tetramer units with the metal ions joined in pairs by the alkoxide oxygen atom in the mu(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-H center dot center dot center dot pi 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).

Sheets of Tetranuclear Ni(II) [2 × 2] Square Grids Structure with Infinite Orthogonal Two-Dimensional Water–Chlorine Chains / Mouhamadou Moustapha-Sow;Ousmane Diouf;Mohamed Gaye;Abdou Salam-Sall;Goretti Castro;Paulo Pérez-Lourido;Laura Valencia;Andrea Caneschi;Lorenzo Sorace. - In: CRYSTAL GROWTH & DESIGN. - ISSN 1528-7483. - STAMPA. - 13:(2013), pp. 4172-4176. [10.1021/cg400885f]

Sheets of Tetranuclear Ni(II) [2 × 2] Square Grids Structure with Infinite Orthogonal Two-Dimensional Water–Chlorine Chains

CANESCHI, ANDREA;SORACE, LORENZO
2013

Abstract

The tetranuclear nickel(II) complex [Ni-4(HL)(4)]Cl-4 center dot 4H(2)O {H2L = 1,5-bis[1-(pyridin-2-y)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 x 2 square grid of tetramer units with the metal ions joined in pairs by the alkoxide oxygen atom in the mu(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-H center dot center dot center dot pi 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).
2013
13
4172
4176
Mouhamadou Moustapha-Sow;Ousmane Diouf;Mohamed Gaye;Abdou Salam-Sall;Goretti Castro;Paulo Pérez-Lourido;Laura Valencia;Andrea Caneschi;Lorenzo Sorace
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/845124
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