Experimental and theoretical electron-density study of three isoindole derivatives: topological and Hirshfeld surface analysis of weak intermolecular interactions

Chęcińska, Lilianna; Grabowsky, Simon; Małecka, Magdalena; Rybarczyk-Pirek, Agnieszka J.; Jóźwiak, Andrzej; Paulmann, Carsten; Luger, Peter (2011). Experimental and theoretical electron-density study of three isoindole derivatives: topological and Hirshfeld surface analysis of weak intermolecular interactions. Acta crystallographica. Section B - Structural science, 67(6), pp. 569-581. Wiley-Blackwell 10.1107/S0108768111041747

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A combined experimental and theoretical study of three isoindole derivatives was made on the basis of a topological analysis of their electron-density distributions. Experimental electron densities were determined from high-resolution X-ray diffraction data sets measured with synchrotron radiation at 100 K, whereas theoretical calculations were performed using DFT methods at the B3LYP\6-311++G(3df,3pd) level of approximation. Both experimental and theoretical models are in good agreement with each other. Since the analysed structures possess a variety of hydrogen-bonding interactions, weak intermolecular contacts of C-H···C(π), C,N(π)···C,N(π) and H···H types were subject to our special interest and are discussed in detail. They were characterized quantitatively and qualitatively by topological properties using Bader's Atoms in Molecules theory and by mapping the electron-density distribution, electrostatic potential and a geometric function on the Hirshfeld surface. This way the forces and directions of intermolecular interactions as present on the molecular surfaces were depicted and described. These interactions not only guide crystal packing, but are likewise important for recognition processes involving (aza)isoindole fragments in a biological environment.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Grabowsky, Simon

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0108-7681

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Simon Grabowsky

Date Deposited:

05 Feb 2020 16:18

Last Modified:

05 Feb 2020 16:18

Publisher DOI:

10.1107/S0108768111041747

BORIS DOI:

10.7892/boris.138487

URI:

https://boris.unibe.ch/id/eprint/138487

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