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Australian Journal of Chemistry Australian Journal of Chemistry Society
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RESEARCH ARTICLE

Coordination compounds of substituted 1,10-phenanthrolines and related bipyridyls. XI. Physicochemical study of complexes of copper(II) and 2-Methyl-1,10-phenanthroline

EW Ainscough and RA Plowman

Australian Journal of Chemistry 23(4) 691 - 697
Published: 1970

Abstract

Solutions of 2-methyl-1,10-phenanthroline (rnep) with excess copper(II) salts in organic solvents yielded complexes of the formula Cu(mep)X2 (X = NO3, Cl, Br, I). These were non-electrolytes in nitrobenzene. When excess rnep was present bis- complexes of the type Cu(mep)2Cl2,6H2O, Cu(mep)2/sub>(NO3)2,H2O, and hydrated forms of the type Cu(mep)2XClO4 (X = Cl, NO3) were obtained. These were 1 : 1 electrolytes in nitrobenzene and the copper(II) ion was at least five-coordinated with the donor nitrogen atoms taking up a flattened tetrahedral arrangement. Hydrated copper(II) perchlorate with rnep in a 1 : 2 or 1 : 1 ratio yielded Cu(mep)2(ClO4)2,2H2O which is a 2 : 1 electrolyte in nitrobenzene. From a water solution of copper nitrate and rnep in the ratio 1 : 3.5, a complex Cu(mep)3(ClO>sub>4)2 precipitated upon the addition of a sodium perchlorate solution. I t was thought previously that this compound did not exist. The magnetic susceptibilities, the conductivities, and the visible, absorption, and infrared spectra of some rnep complexes have been obtained and structures are proposed from this information.

https://doi.org/10.1071/CH9700691

© CSIRO 1970

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