Abstract

Abstract The investigation of the crystal structures of three closely related sulfonamides, namely N-(2-fluorobenzoyl)-2-methylbenzenesulfonamide (I), N-(2-fluorobenzoyl)-4-methylbenzenesulfonamide (II) and N-(2-fluorobenzoyl)-2-chlorobenzenesulfonamide (III) by analysing intermolecular interactions and the packing patterns, and also by Hirshfeld surface analyses is presented. Compound (I) has a three-dimensional (3D) network, in which N–H···O and C–H···F chains build up two-dimensional (2D) arrays, which are extended into a 3D network through C–H···π interactions. In (II), alternating N–H···O and C–H···O rings form one-dimensional (1D) ribbons, which are interconnected by C–H···π interactions to build a 2D network. In (III), 2D sheets comprising N–H···O rings, C–H···π chains, Cl···F and F···F contacts are stacked by π···π interactions to form a 3D network. Hirshfeld surface analyses, comprising dnorm surfaces, curvedness and 2D fingerprint (FP) plots, for all three molecules were also conducted to verify the importance of the different intermolecular interactions.

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