Structural systematics in isomorphous binary cocrystal solvates comprising 2,2′-dithiodibenzoic acid, 4-halobenzoic acid and dimethylformamide (1 : 1 : 1), for halide = chloride, bromide and iodide
The 1:1:1 binary co-crystal solvates formulated as 2,2'-dithiodibenzoic acid (DTBA), 4-halobenzoic acid (4-XBA) and dimethylformamide (DMF) for X = Cl (1), Br (2) and I (3) are isomorphous and the supramolecular association in this series has been probed by a wide range of computational chemist...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2022
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| Subjects: | |
| Online Access: | http://eprints.sunway.edu.my/2101/ http://eprints.sunway.edu.my/2101/1/iso_text_revised2.pdf |
| Summary: | The 1:1:1 binary co-crystal solvates formulated as 2,2'-dithiodibenzoic acid (DTBA), 4-halobenzoic acid (4-XBA) and dimethylformamide (DMF) for X = Cl (1), Br (2) and I (3) are isomorphous and the supramolecular association in this series has been probed by a wide range of computational chemistry techniques. The common feature of the molecular packing is the formation of robust three-molecule aggregates sustained by a non-symmetric {···HOC=O}2
synthon, formed between DTBA and 4-XBA, and a DTBA-hydroxyl-O–H···O(carbonylDMF) hydrogen bond (with a reciprocating DMF-C–H···O(carbonyl-DTBA) contact). Supramolecular tapes are evident and feature DTBA-C–H···O(DMF), DTBA-C–H···S(DTBA), DMF-O···π(DTBA-phenyl) and DMF-C–H···π(DTBA-phenyl) contacts. The point-to-point connections between tapes are of the type π(4-XBA-phenyl)···π(DTBA-phenyl), π(4-XBA-phenyl)···π(4-XBA-phenyl), DTBA-C–H···π(DTBA-phenyl) and DMF-C···X |
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