Abstract
In the title complex, [Ni(C7H3NO4)(C2H6OS)2(H2O)], the NiII cation is situated on a twofold rotation axis and exhibits a distorted octa-hedral NO5 coordination environment defined by a tridentate pyridine-2,6-di-carb-oxy-lic acid dianion (dpa2-), two dimethyl sulfoxide (DMSO) mol-ecules, and a water mol-ecule. In the crystal, the complex mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds into a three-dimensional network whereby DMSO mol-ecules from neighboring complexes overlap to form layers parallel to (001), alternating with layers of NiII-dpa2- moieties. The title complex is isotypic with its cobalt(II) analogue.
Highlights
Crystal engineering plays an important role in the research of molecule-based functional materials by providing an effective approach towards the rational design and preparation of compounds with special structural features (Robin & Fromm, 2006; Cook et al, 2013; Wang et al, 2013)
Much has been learned about how the synthetic conditions affect intermolecular interactions and the final crystal structures, the targeted synthesis of a coordination polymer with a particular crystal structure is still a challenge
We recently reported an NiII-containing one-dimensional coordination polymer based on the tridentate 2,6-pyridine dicarboxylic acid dianion and bridging pyrazine molecules that was prepared by using dimethyl sulfoxide (DMSO) as the solvent (Liu et al, 2016)
Summary
Crystal engineering plays an important role in the research of molecule-based functional materials by providing an effective approach towards the rational design and preparation of compounds with special structural features (Robin & Fromm, 2006; Cook et al, 2013; Wang et al, 2013). The competition among various types of intermolecular interactions plays a critical role in this process and is strongly influenced by synthetic conditions such as the choice of solvent, temperature, and the molecular features of the starting materials (Li & Du, 2011; Du et al, 2013). We recently reported an NiII-containing one-dimensional coordination polymer based on the tridentate 2,6-pyridine dicarboxylic acid dianion (dpa2À) and bridging pyrazine molecules that was prepared by using DMSO as the solvent (Liu et al, 2016). Symmetry codes: (i) Àx þ 12; y þ 12; Àz þ 12; (ii) x À 12; Ày þ 12; z þ 12; (iii) Àx þ 12; Ày þ 12; Àz þ 1
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