By reacting 4,4'-bipyridine (bpy) with selected trinuclear triangular Cu-II complexes, [Cu-3(mu(3)-OH)(mu-pz)(3)(RCOO)(2)(LL')] [pz = pyrazolate anion; R = CH3, CH3CH2, CH2=CH, CH2=C(CH3); L, L' = Hpz, H2O, MeOH] in MeOH, the substitution of monotopic ligands by ditopic bpy was observed. Depending on the stoichiometric reaction ratios, different compounds were isolated and structurally characterized. One- and two-dimensional coordination polymers (CPs), as well as two hexanuclear Cu-II clusters were identified. One of the hexanuclear clusters self-assembles into a supramolecular three-dimensional structure, and its crystal packing shows the presence of two intersecting channels, one of which is almost completely occupied by guest bpy, while in the second one guest water molecules are present. This compound also shows a reversible, thermally induced, single-crystal-to-single-crystal transition.

Interaction of the Trinuclear Triangular Secondary Building Unit [Cu3(μ3-OH)(μ-pz)3]2+with 4,4′-Bipyridine. Structural Characterizations of New Coordination Polymers and Hexanuclear CuIIClusters. 2°

GARAU, FEDERICA
Writing – Original Draft Preparation
;
LANZA, ARIANNA
Writing – Original Draft Preparation
;
NESTOLA, FABRIZIO
Writing – Original Draft Preparation
;
PANDOLFO, LUCIANO
Writing – Original Draft Preparation
;
2015

Abstract

By reacting 4,4'-bipyridine (bpy) with selected trinuclear triangular Cu-II complexes, [Cu-3(mu(3)-OH)(mu-pz)(3)(RCOO)(2)(LL')] [pz = pyrazolate anion; R = CH3, CH3CH2, CH2=CH, CH2=C(CH3); L, L' = Hpz, H2O, MeOH] in MeOH, the substitution of monotopic ligands by ditopic bpy was observed. Depending on the stoichiometric reaction ratios, different compounds were isolated and structurally characterized. One- and two-dimensional coordination polymers (CPs), as well as two hexanuclear Cu-II clusters were identified. One of the hexanuclear clusters self-assembles into a supramolecular three-dimensional structure, and its crystal packing shows the presence of two intersecting channels, one of which is almost completely occupied by guest bpy, while in the second one guest water molecules are present. This compound also shows a reversible, thermally induced, single-crystal-to-single-crystal transition.
2015
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3148578
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