Abstract
A systematic investigation into the reactions of o- and p-phenylenediacetic acid with zinc(II) and cadmium(II) salts in the presence of the semi-rigid 1,4-bis(2-methylimidazol-1-ylmethyl)benzene (pbmeix) co-ligand is reported. Five new coordination polymers – [Zn(μ-opda)(μ-pbmeix)0.5]n 1, {[Zn(μ-ppda)(μ-pbmeix)]·H2O}n 2, {[Zn(μ-ppda)(μ-pbmeix)]∙0.5pbmeix·H2O}n 3, {[Cd(μ-opda)(μ-pbmeix)]·0.5DMF}n 4 and [Cd(μ-ppda)(μ-pbmeix)0.5]n 5 (o/ppda = 1,2-/1,4-phenylenediacetate) – have been prepared and structurally characterised. Compounds 1 and 5 were found to form three-dimensional coordination networks, 2 forms a two-dimensional structure whereas both 3 and 4 form one-dimensional nanotubular structures. Compounds 1 and 4 are opda complexes in which the dicarboxylate shows a tridentate coordination mode in 1 and a tetradentate coordination mode in 4. Compounds 2, 3 and 5 are ppda complexes in which the dicarboxylate adopts bidentate (2, 3) and hexadentate (5) coordination modes. The structure of 2 contains interpenetrated 2D frameworks and is a polycatenane with ppda linkers from one framework passing through Zn2(μ-pbmeix)2 rings from a neighbouring framework. The thermal stability of complexes 1–4 and luminescence properties of complexes 1 and 4 are also reported.
Original language | English |
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Pages (from-to) | 246-256 |
Number of pages | 11 |
Journal | Journal of Solid State Chemistry |
Volume | 269 |
Early online date | 25 Sep 2018 |
DOIs | |
Publication status | Published - 1 Jan 2019 |
Keywords
- 1
- 4-bis(2-methylimidazol-1-ylmethyl)benzene complexes
- Cadmium(II) complexes
- Coordination polymer
- Phenylenediacetate complexes
- Zinc(II) complexes
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry