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A comparative experimental and theoretical investigation of hydrogen‐bond, halogen‐bond and π–π interactions in the solid‐state supramolecular assembly of 2‐ and 4‐formylphenyl arylsulfonates
Author(s) -
Andleeb Hina,
Khan Imtiaz,
Bauzá Antonio,
Tahir Muhammad Nawaz,
Simpson Jim,
Hameed Shahid,
Frontera Antonio
Publication year - 2018
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229618008355
Subject(s) - supramolecular chemistry , halogen bond , halogen , hydrogen bond , chemistry , stacking , molecule , non covalent interactions , computational chemistry , organic chemistry , alkyl
To explore the operational role of noncovalent interactions in supramolecular architectures with designed topologies, a series of solid‐state structures of 2‐ and 4‐formylphenyl 4‐substituted benzenesulfonates was investigated. The compounds are 2‐formylphenyl 4‐methylbenzenesulfonate, C 14 H 12 O 4 S, 3a , 2‐formylphenyl 4‐chlorobenzenesulfonate, C 13 H 9 ClO 4 S, 3b , 2‐formylphenyl 4‐bromobenzenesulfonate, C 13 H 9 BrO 4 S, 3c , 4‐formylphenyl 4‐methylbenzenesulfonate, C 14 H 12 O 4 S, 4a , 4‐formylphenyl 4‐chlorobenzenesulfonate, 4b , C 13 H 9 ClO 4 S, and 4‐formylphenyl 4‐bromobenzenesulfonate, C 13 H 9 BrO 4 S, 4c . The title compounds were synthesized under basic conditions from salicylaldehyde/4‐hydroxybenzaldehydes and various aryl sulfonyl chlorides. Remarkably, halogen‐bonding interactions are found to be important to rationalize the solid‐state crystal structures. In particular, the formation of O… X ( X = Cl and Br) and type I X … X halogen‐bonding interactions have been analyzed by means of density functional theory (DFT) calculations and characterized using Bader's theory of `atoms in molecules' and molecular electrostatic potential (MEP) surfaces, confirming the relevance and stabilizing nature of these interactions. They have been compared to antiparallel π‐stacking interactions that are formed between the arylsulfonates.