Title of article :
Crystal structure of μ-oxalodihydroxamato-bis[(2,2′-bipyridyl)(dimethyl sulfoxide-κO)copper(II)] bis(perchlorate)
Author/Authors :
Odarich,Irina A. O.O. Bohomolets National Medical University - Department of General Chemistry, Ukraine , Pavlishchuk, Anna V. Taras Shevchenko National University of Kiev - Department of Chemistry, Ukraine , Kalibabchuk, Valentina A. O.O. Bohomolets National Medical University - Department of General Chemistry, Ukraine , Haukka, Matti University of Joensuu, Department of Chemistry, Finland
Abstract :
The centrosymmetric binuclear complex, [Cu2(C2H2N2O4)(C10H8N2)2(C2H6OS)2](ClO4)2, contains two copper(II) ions, connected through an N-deprotonated oxalodihydroxamic acid dianion, two terminal 2,2′-bipyridine ligands, and two apically coordinating dimethylsulfoxide molecules. Two non-coordinating perchlorate anions assure electrical neutrality. The copper(II) ions in the complex dication [Cu2(C10H8N2)2(μ-C2H2N2O4)(C2H6SO)2]2+ are in an O2N3 square-pyramidal donor environment, the Cu–Cu separation being 5.2949 (4) Å. Two hydroxamate groups in the deprotonated oxalodihydroxamic acid are located trans to one each other. In the crystal, O—H⋯O and C—H⋯O hydrogen bonds link the complex cations to the perchlorate anions. Further C—H⋯O hydrogen bonds combine with π–π contacts with a centroid-to-centroid separation of 3.6371 (12) Å to stack the molecules along the a-axis direction.
Keywords :
oxalodihydroxamic acid , crystal structure , Cu(II) complex
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
