trans-Bis(ethylenediamine-κ²N,N′)bis(6-methyl-2,2,4-trioxo-3,4-dihydro-1,2λ⁶,3-oxathiazin-3-ido-κN)copper(II)

Abstract

In the crystal structure of the title compound, [Cu(C4H4NO4S)2(C2H8N2)2], the Cu2+ ion resides on a centre of symmetry. The environment of Cu2+ ion is a distorted octa­hedron. The axial bond lengths between the CuII ion and the N atoms are considerably longer than the equatorial bond distances between the CuII ion and the N atoms of the ethyl­enediamine ligand as a consequence of the Jahn–Teller effect. The mol­ecular conformation is stabilized by intra­molecular N—H⋯O hydrogen bonds. In the crystal, mol­ecules are connected by inter­molecular N—H⋯O hydrogen bonds into chains running along the a axis.

Synthesis, characterization and crystal structure of Cu(II) complex of trans-cyclohexane-1,2-diamine: Application in synthesis of symmetrical biaryls

“…The Cu-O and Cu-N bond lengths of this complex are lies in the range of 2.4425 (19) Å to 2.4555 (19) Å and 2.009 (2) Å to 2.036 (2) Å respectively, which are in close agreement with the values of previously reported other copper(II) diamine complexes [40][41]. The complex shows two types of N-Cu-N bond angles, in the range of 84.28(9)-95.89(9) and 179.71(9)-179.80(9) which are similar with previously reported Cu(II) complexes [42].…”