Bis(N,N′-bis(2-hydroxyethyl)ethylenediamine)nickel(II) saccharinate: synthesis, characterization and crystal structure

Abstract

A new nickel(II) saccharinate (sac) complex containing <em>N</em>,<em>N</em>′-bis(2-hydroxyethyl)ethylenediamine (bishydeten), [Ni(bishydeten)<sub>2</sub>](sac)<sub>2</sub>, has been synthesized and characterized by elemental analysis, FTIR and single crystal X-ray diffraction. The title complex consists of a [Ni(bishydeten)<sub>2</sub>]<sup>2+</sup> cation and two sac anions. In the complex cation, the nickel(II) ion is coordinated by two neutral bishydeten ligands, leading to a distorted octahedral NiN<sub>4</sub>O<sub>2</sub> coordination, while both sac anions remain outside the coordination sphere. In the crystal, the complex cations and sac anions are connected by an extensive network of N–H∙∙∙N, N–H∙∙∙O, O–H∙∙∙O and C–H∙∙∙O hydrogen bonds into a three-dimensional supramolecular lattice.