Synthesis, Crystal Structure and EPR Spectra of Tetraaquabis(Methylisonicotinate) Copper(II) Disaccharinate Single Crystal

Abstract

The crystal structure of the [Cu(mein)<inf>2</inf>(H<inf>2</inf>O) <inf>4</inf>]·(sac)<inf>2</inf> complex (mein: methylisonicotinate, sac: saccharine) was investigated by single crystal X-ray diffraction technique. The vibrational spectrum was also discussed in relation with the other compounds containing methylisonicotinate and saccharinate complexes. The EPR spectra of [Cu(mein)<inf>2</inf>(H<inf>2</inf>O)<inf>4</inf>]·(sac)<inf>2</inf> single crystal have been studied in the temperature range between 113 and 300 K in three mutually perpendicular planes and exhibit two sets of four hyperfine lines of Cu2+ ion. The ground state wave function of the Cu 2+ ion is an admixture of dx2-y2 and d z2 states. © 2011 Elsevier B.V. All rights reserved.