Preparation and Thermochromic Properties of Copper(II)-N,N-Diethylethylenediamine Complexes

• Ai-Li Cui ^[1] ; Xi Chen ^[1] ; Long Sun ^[1] ; Jing-Zhi Wei ^[1] ; Jin Yang ^[1] ; Hui-Zhong Kou ^[1]
  1. [1] Tsinghua University

     Tsinghua University

     China

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 88, Nº 3, 2011, págs. 311-312
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The synthesis and characterization of two copper(II) complexes, [Cu(deen)2](BF4)2 and [Cu(deen)2](NO3)2 (deen = N,N-diethylethylenediamine), that show interesting thermochromic properties, are described. The subtle alternation of coordination geometry around Cu(II) is responsible for the color change from red to violet. This experiment is suitable for first-year chemistry students and could demonstrate one of the colorful properties of chelate compounds.