Accurate crystal structures and chemical properties from NoSpherA2

Kleemiss, Florian; Dolomanov, Oleg V.; Bodensteiner, Michael; Peyerimhoff, Norbert; Midgley, Laura; Bourhis, Luc J.; Genoni, Alessandro; Malaspina, Lorraine A.; Jayatilaka, Dylan; Spencer, John L.; White, Fraser; Grundkötter-Stock, Bernhard; Steinhauer, Simon; Lentz, Dieter; Puschmann, Horst; Grabowsky, Simon (2021). Accurate crystal structures and chemical properties from NoSpherA2. Chemical Science, 12(5), pp. 1675-1692. The Royal Society of Chemistry 10.1039/d0sc05526c

079_Kleemiss2020_ChemSci.pdf - Published Version
Available under License Creative Commons: Attribution-Noncommercial (CC-BY-NC).

Download (1MB) | Preview

The relationship between the structure and the properties of a drug or material is a key concept of chemistry. Knowledge of the three-dimensional structure is considered to be of such importance that almost every report of a new chemical compound is accompanied by an X-ray crystal structure – at least since the 1970s when diffraction equipment became widely available. Crystallographic software of that time was restricted to very limited computing power, and therefore drastic simplifications had to be made. It is these simplifications that make the determination of the correct structure, especially when it comes to hydrogen atoms, virtually impossible. We have devised a robust and fast system where modern chemical structure models replace the old assumptions, leading to correct structures from the model refinement against standard in-house diffraction data using no more than widely available software and desktop computing power. We call this system NoSpherA2 (Non-Spherical Atoms in Olex2). We explain the theoretical background of this technique and demonstrate the far-reaching effects that the improved structure quality that is now routinely available can have on the interpretation of chemical problems exemplified by five selected examples.

Item Type:

Journal Article (Original Article)


08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Kleemiss, Florian, Malaspina, Lorraine, Grabowsky, Simon


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




The Royal Society of Chemistry




Simon Grabowsky

Date Deposited:

20 Jan 2021 08:12

Last Modified:

05 Dec 2022 15:44

Publisher DOI:





Actions (login required)

Edit item Edit item
Provide Feedback