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Synthesis, structural determination and magnetic properties of a heterobimetallic CuRe complex containing a macrocyclic ligand |
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| Authors: | A Tomkiewicz B Korybut-Daszkiewcz H Hartl |
| Institution: | a Faculty of Chemistry, University of Wroclaw, ul. F. Joliot-Curie 14, 50-383 Wroclaw, Poland b Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44, 01-224 Warszawa, Poland c Institute of Chemistry/Inorganic and Analytical Chemistry, Freie Universitat Berlin, Fabeckstr. 34-36, D-14195 Berlin, Germany |
| Abstract: | Reaction of the rhenium(IV) compound, Bu4N]2ReCl4ox, with the highly unsaturated tetraazabismacrocyclic copper(II) complex cation CuCuL]4+ (L = 6,13-Bis(dodecylaminomethylidene)-1,4,8,11-tetraazacyclotetradeca-4,7,11,14-tetraene) produced a new kind of heterobimetallic compound: CuCuL]ReCl4ox]2 · 2DMF in which ReCl4ox]2− anions and CuCuL]4+ cations are linked by electrostatic forces. The crystal structure of this compound was determined at 173(2) K. It crystallizes triclinic, space group  , with a = 9.441(4), b = 11.032(5), c = 15.261(7) Å, α = 89.05(1)°, β = 88.93(1)°, γ = 77.09(1)°, Z = 1, R1 = 0.0557, wR2 = 0.1332. The magnetic behavior of this compound has been investigated over the temperature range 1.72-300 K. The compound behaves as a ferrimagnetic CuIIReIV bimetallic, chain with intrachain antiferromagnetic coupling. |
| Keywords: | Bimetallic complexes Rhenium(IV) Copper(II) Ferrimagnetic chain |
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