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Chemical Papers

, Volume 62, Issue 3, pp 260–267 | Cite as

Synthesis and electrical properties of CuBr2 complexes with 1,10-phenanthroline monohydrate

  • Sülin TaşcıoǧluEmail author
  • Esra Kakı
  • Mehmet Arı
Original Paper
  • 161 Downloads

Abstract

Using 1,10-phenanthroline monohydrate and CuBr2 in molar ratios of 1:1 and 2:1, in CH3OH/H2O (ϕr = 1:1), the complexes [(phen)CuBr2]2, (I), and {[(phen)2CuBr]Br·H2O}, (II), have been prepared. The hydrogen bondings and aqua bridges between coordinated and noncoordinated bromides of II have been observed by XRD. Complex II has a triclinic crystal structure with distorted trigonal bipyramidal coordination geometry. Possibilities of ligand exchange with hydroxide or ammonia have been examined in both complexes. While the mononuclear complex II is stable in a refluxed ammonia solution and the complex {[phen)2CuBr]Br·3H2O}, (IV), trihydrate of II, is obtained; the binuclear complex I reacts with the ammonia solution to replace one of its bromides in the subunits with hydroxide to give {[(phen)2Cu2Br2(OH)2]·4H2O}, (III). Structural and electrical properties of the complexes have been investigated by elemental analysis, vibrational and electronic spectroscopy, mass spectrometry, TGA, XRD and the four-point probe method. The temperature coefficients of resistivity and the activation energies of the complexes have also been obtained. All complexes behave as intrinsic semiconductor in the temperature range of 310–440 K.

Keywords

1,10-phenanthroline copper(II) bromide electrical conductivity semiconductor 

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Copyright information

© Versita 2008

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of Science and LettersMarmara UniversityIstanbulTurkey
  2. 2.Department of Physics, Faculty of Science and LettersErciyes UniversityKayseriTurkey

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