Syntheses, Crystal Structures, and Optical Properties of Two New Cu(II)-Radical Complexes

Abstract

Two new Cu(II)-radical complexes [Cu(4ImNNH)₂(ClO₄)₂] 1 and [Cu(NIT-2Py)₂(ClO₄)](ClO₄)^.CH₃OH 2, (NIT2-py = 2-(2’-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, 4ImNNH = 2-(4-imidazolyl)-4,4,5,5-tetramethylimidazolin-1-oxyl-3-oxide), have been synthesized and characterized by X-ray diffraction analysis, element analyses, IR, and UV-visible spectroscopy. X-ray analysis reveals that both Cu(II) ions are six-coordinated with octahedron geometry. Cu(II) ions in complex 2 are bridged by perchlorate anions, leading to a 1D chain structure.

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Keywords:

• crystal structure
• Cu(II) complex
• nitronyl nitroxide radical

Acknowledgments

This work was financially supported by Natural Science Foundation of Anhui Province (grant no. KJ2012B174) and the Doctoral Start-up Fund of Huainan Normal University.