{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T23:25:09Z","timestamp":1792797909361,"version":"4.5.0"},"reference-count":56,"publisher":"Wiley","issue":"63","license":[{"start":{"date-parts":[[2021,10,19]],"date-time":"2021-10-19T00:00:00Z","timestamp":1634601600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003246","name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003246","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2021,11,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    We have quantum chemically analyzed element\u2212element bonds of archetypal H\n                    <jats:sub>n<\/jats:sub>\n                    X\u2212YH\n                    <jats:sub>n<\/jats:sub>\n                    molecules (X, Y=C, N, O, F, Si, P, S, Cl, Br, I), using density functional theory. One purpose is to obtain a set of consistent homolytic bond dissociation energies (BDE) for establishing accurate trends across the periodic table. The main objective is to elucidate the underlying physical factors behind these chemical bonding trends. On one hand, we confirm that, along a period (e.\u2009g., from C\u2212C to C\u2212F), bonds strengthen because the electronegativity difference across the bond increases. But, down a period, our findings constitute a paradigm shift. From C\u2212F to C\u2212I, for example, bonds do become weaker, however, not because of the decreasing electronegativity difference. Instead, we show that the effective atom size (via steric Pauli repulsion) is the causal factor behind bond weakening in this series, and behind the weakening in orbital interactions at the equilibrium distance. We discuss the actual bonding mechanism and the importance of analyzing this mechanism as a function of the bond distance.\n                  <\/jats:p>","DOI":"10.1002\/chem.202103544","type":"journal-article","created":{"date-parts":[[2021,10,7]],"date-time":"2021-10-07T05:50:12Z","timestamp":1633585812000},"page":"15616-15622","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["The Chemical Bond: When Atom Size Instead of Electronegativity Difference Determines Trend in Bond Strength"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3687-3367","authenticated-orcid":false,"given":"Eva","family":"Blokker","sequence":"first","affiliation":[{"name":"Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam  De Boelelaan 1083 1081 HV Amsterdam The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2483-8476","authenticated-orcid":false,"given":"Xiaobo","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam  De Boelelaan 1083 1081 HV Amsterdam The Netherlands"},{"name":"Departament de Qu\u00edmica Inorg\u00e0nica i Org\u00e0nica &amp; IQTCUB Universitat de Barcelona  Mart\u00ed i Franqu\u00e8s 1\u201311 08028 Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0814-5074","authenticated-orcid":false,"given":"Jordi","family":"Poater","sequence":"additional","affiliation":[{"name":"Departament de Qu\u00edmica Inorg\u00e0nica i Org\u00e0nica &amp; IQTCUB Universitat de Barcelona  Mart\u00ed i Franqu\u00e8s 1\u201311 08028 Barcelona Spain"},{"name":"ICREA  Pg. Llu\u00eds Companys 23 08010 Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0292-2661","authenticated-orcid":false,"given":"J. Martijn","family":"van der Schuur","sequence":"additional","affiliation":[{"name":"Polymer Specialties, Nouryon  Zutphenseweg 10 7418 AJ Deventer The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5128-1004","authenticated-orcid":false,"given":"Trevor A.","family":"Hamlin","sequence":"additional","affiliation":[{"name":"Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam  De Boelelaan 1083 1081 HV Amsterdam The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4655-7747","authenticated-orcid":false,"given":"F. Matthias","family":"Bickelhaupt","sequence":"additional","affiliation":[{"name":"Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam  De Boelelaan 1083 1081 HV Amsterdam The Netherlands"},{"name":"Institute of Molecules and Materials Radboud University  Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,10,19]]},"reference":[{"key":"e_1_2_2_1_1","volume-title":"March's Advanced Organic Chemistry: Reactions, Mechanisms, and Structure","author":"Smith M. 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