Evidence map›Paper›PMID 34188611›Full record

ArticleJournal of applied crystallography2021

The advanced treatment of hydrogen bonding in quantum crystallography.

Lorraine A Malaspina, Alessandro Genoni, Dylan Jayatilaka, Michael J Turner, Kunihisa Sugimoto, Eiji Nishibori, Simon Grabowsky

Abstract read
In one paragraph

Article in Journal of applied crystallography, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

  1. Periodic Hirshfeld Atom Refinement.The journal of physical chemistry letters · 2026
    Article
  2. Role of restraints on hydrogen atoms in Hirshfeld atom refinement: the case of tri-aspartic acid trihydrate.Acta crystallographica Section B, Structural science, crystal engineering and materials · 2025
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  6. Multipolar model and Hirshfeld atom refinement of tetraaquabis(hydrogenmaleato)iron(II).Acta crystallographica Section B, Structural science, crystal engineering and materials · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Lorraine A MalaspinaUniversität Bern, Departement für Chemie, Biochemie und Pharmazie, Freiestrasse 3, 3012 Bern, Switzerland.ORCID https://orcid.org/0000-0002-8281-4264
Alessandro GenoniUniversité de Lorraine and CNRS, Laboratoire de Physique et Chimie Théoriques (LPCT), UMR CNRS 7019, 1 Boulevard Arago, 57078 Metz, France.ORCID https://orcid.org/0000-0002-3511-4855
Dylan JayatilakaThe University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA 6009, Australia.ORCID https://orcid.org/0000-0002-3349-5834
Michael J TurnerThe University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA 6009, Australia.
Kunihisa SugimotoJapan Synchrotron Radiation Research Institute/Diffraction and Scattering Division, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.ORCID https://orcid.org/0000-0002-0103-8153
Eiji NishiboriDepartment of Physics, Faculty of Pure and Applied Sciences, Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, Tsukuba, Japan.ORCID https://orcid.org/0000-0002-4192-6577
Simon GrabowskyUniversität Bern, Departement für Chemie, Biochemie und Pharmazie, Freiestrasse 3, 3012 Bern, Switzerland.ORCID https://orcid.org/0000-0002-3377-9474

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although hydrogen bonding is one of the most important motifs in chemistry and biology, H-atom parameters are especially problematic to refine against X-ray diffraction data. New developments in quantum crystallography offer a remedy. This article reports how hydrogen bonds are treated in three different quantum-crystallographic methods: Hirshfeld atom refinement (HAR), HAR coupled to extremely localized molecular orbitals and X-ray wavefunction refinement. Three different compound classes that form strong intra- or intermolecular hydrogen bonds are used as test cases: hydrogen maleates, the tripeptide l-alanyl-glycyl-l-alanine co-crystallized with water, and xylitol. The differences in the quantum-mechanical electron densities underlying all the used methods are analysed, as well as how these differences impact on the refinement results.

Indexed as

electron densityHirshfeld atom refinementhydrogen bondingquantum crystallographyX-ray constrained wavefunction fitting

Identifiers

PMID34188611
PMCPMC8202034

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.