• (preparation, structural characterisation, and magnetic properties of [cu(men)2][cu2cd2cl2(cn)6] (men = n-methylethane-1,2-diamine

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 915
    • تعداد پرسش و پاسخ ها: 0
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     the novel complex [cu(men)2][cu2cd2cl2(cn)6] (i) was isolated from the aqueous-ethanol system containing cucl2, men (men = n-methylethane-1,2-diamine) and k2[cd(cn)4] in the presence of dilute hydrochloric acid and chemically and spectroscopically characterised. the crystal structure ofi consists of [cu 2 i(cn)6] and [cd2cl2(cn)6] building units bridged by cyanide ligands and forms a three-dimensional skeleton with cavities. [cu(men)2]2+ cations in which two men ligands are chelated (mean cu-n is 2.033(6) å) are located in the cavities. the coordination polyhedron around the cu(ii) atoms is formed as a tetragonal bipyramidal by two weaker axial cu-cl bonds (2.8642(12) å) with chlorido ligands from the skeleton. the cu(i) and cd(ii) atoms in the skeleton exhibit tetra-(cuc4chromophore) and penta-coordination (cdn3cl2), respectively. the temperature-dependent susceptibility measurements indicate a curie-weiss-like behaviour and the presence of weak anti-ferromagnetic interaction.

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