Abstract
The study presents the synthesis and structural aspects of a new family of dimethyltin carboxylates, [(Me2Sn)2(btec)(bipy)(H2O)] ⋅ 4H2O (1), [Me2Sn(btec)0.5(bipy)]2 ⋅ H2O (2), [Me2Sn(btec)0.5(bipy)] ⋅ 3H2O ⋅ 0.5bipy (3) and [Me2Sn(btec)0.5(phen)] (4) derived from 1,2,4,5-benzenetetracarboxylic acid (H4btec). The structure in each case adopts a one-dimensional motif featuring ditin macrocycles with 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) acting as the chelating ligand. For 1, the lattice water molecules in association with the framework form infinite T4(0)A(1) water chains. The organic hydrate, bipy ⋅ 6H2O in 3 adopts a layered structure comprising T4(2)6(2) water tapes and trans-bipy. Dehydration of 2 to 2 a results in crystal structure transformation from centrosymmetric P21/c (in 2) to chiral P212121 space group and reveals conformational changes in the ditin macrocycles from chair to boat form. The reversibility of this transformation has been supported by TGA, PXRD, and single-crystal X-ray studies.
Original language | English |
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Article number | e202200052 |
Journal | European Journal of Inorganic Chemistry |
Volume | 2022 |
Issue number | 13 |
Early online date | 17 Mar 2022 |
DOIs | |
Publication status | Published - 9 May 2022 |
Funding
This work is supported by CSIR, India [grant no.– 01(2651)/12/EMR‐II]. We are grateful to UGC, India, and IIT Delhi for providing senior research fellowships to A. Dubey, E. Jakhar and P. Chauhan. The authors thank DST‐FIST India for providing the grant for single crystal X‐ray instrument.
Keywords
- Coordination polymers
- Dimethyltin carboxylates
- Reversible de-/rehydration
- Structural transformation
- Supramolecular assemblies
ASJC Scopus subject areas
- Inorganic Chemistry
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Fourier Transform Infrared spectrometer (FT-IR)
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