THERMOCHROMISMS OF SOME β-DIKETONE CHELATE COMPLEXES OF COPPER(II) IN PURE PYRIDINE

Abstract

Abstract Two types of thermochromisms have been found for several β-diketone chelate complexes of copper(II) in pure pyridine. One is observed for such complexes as bis(acetylacetonato)copper(II), where the visible absorption spectra at various temperatures have well-defined isosbestic points. The other is observed for such complexes as bis(salicylaldehydato)copper(II), where only the spectral intensity increases unusually with a rise in temperature.