Two copper(II) [2 × 2] grid-like complexes were synthesized and structurally characterized. Investigation of the magnetic properties showed for both the occurrence of intramolecular ferromagnetic interactions.
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Ferromagnetic coupling in copper(II) [2 × 2] grid-like complexes.
Inorg Chem
May 2014
Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France.
Two copper(II) [2 × 2] grid-like complexes were synthesized and structurally characterized. Investigation of the magnetic properties showed for both the occurrence of intramolecular ferromagnetic interactions.
View Article and Find Full Text PDFPolynuclear copper(II) pyrazolate complexes: temperature-dependent protonolysis reactions, crystal structures and high catalytic activity toward the condensation of nitriles with 2-aminoalcohol.
Dalton Trans
November 2013
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China.
Reaction of Cu(OAc)2·H2O and 1H-pyrazole-3,5-dicarboxylic acid dimethyl ester (Hdcmpz) in MeOH at room temperature afforded one tetranuclear Cu(II)/pyrazolate complex [{Cu2(μ-OAc)2}2(μ-dcmpz)2(μ-OAc)2] (1) in 89% yield. The similar reaction in refluxing MeOH produced a hexanuclear metallamacrocyclic Cu(II)/pyrazolate complex [{Cu(μ-dcmpz)}2(μ-OMe)2]3 (2) in 85% yield. Treatment of the same components under solvothermal conditions resulted in the formation of another tetranuclear Cu(II)/pyrazolate/carboxylate complex [{Cu(MeOH)}4(μ-mcccpz)4] (3, Hmcccpz = 5(3)-(methoxycarbonyl)-1H-pyrazole-3(5)-carboxylic acid) in 30% yield.
View Article and Find Full Text PDFSynthesis, structures, and magnetic properties of four copper compounds with 2,2'-dinitrobiphenyl-4,4'-dicarboxylate.
Dalton Trans
October 2012
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China.
Four copper(II) coordination polymers of 2,2'-dinitrobiphenyl-4,4'-dicarboxylic acid (H(2)dnbpdc), with or without 4,4'-bipyridyl (bipy) as co-ligand, were synthesized under hydrothermal conditions and characterized crystallographically and magnetically. They are formulated as [Cu(2)(dnbpdc)(OH)(2)](n) (1), [Cu(Hdnbpdc)(2)(bipy)](n)·2nH(2)O (2), [Cu(2)(dnbpdc)(2)(bipy)(H(2)O)(2)](n)·2nH(2)O (3) and [Cu(3)(dnbpdc)(2)(bipy)(OH)(2)(H(2)O)](n)·nH(2)O (4). Compound 1 exhibits a 2D coordination network, in which infinite [Cu(μ-OH)(μ-COO)](n) chains are linked by the backbones of the dnbpdc(2-) ligands.
View Article and Find Full Text PDFCopper-induced N-N bond cleavage results in an octanuclear expanded-core grid-like complex.
Chem Commun (Camb)
June 2012
Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
Reaction of copper(I) acetate and 4-amino-3,5-di(2-pyridyl)-1,2,4-triazole (adpt) in methanol under ambient conditions yields octanuclear [Cu(II)(8)(dpt)(4)(OH)(4)(OAc)(8)]; OAc = acetate anion, and dpt(-) = anion of deaminated adpt, 3,5-di(2-pyridyl)-1,2,4-triazolate. However, reaction of copper(ii) acetate with dptH gives tetranuclear [Cu(II)(4)(dpt)(2)(OH)(OMe)(OAc)(4)].
View Article and Find Full Text PDFAnion-directed synthesis of metal-organic frameworks based on 2-picolinate CuII complexes: a ferromagnetic alternating chain and two unprecedented ferromagnetic fish backbone chains.
Inorg Chem
December 2007
Department of Chemistry, University College of Science, University of Calcutta, 92 A.P.C. Road, Kolkata-700009, India.
Three new polynuclear copperII complexes of 2-picolinic acid (Hpic), {[Cu2(pic)3(H2O)]ClO4}n (1), {[Cu2(pic)3(H2O)]BF4}n (2), and [Cu2(pic)3(H2O)2(NO3)]n (3), have been synthesized by reaction of the "metalloligand" [Cu(pic)2] with the corresponding copperII salts. The compounds are characterized by single-crystal X-ray diffraction analyses and variable-temperature magnetic measurements. Compounds 1 and 2 are isomorphous and crystallize in the triclinic system with space group P, while 3 crystallizes in the monoclinic system with space group P21/n.
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