{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T12:03:23Z","timestamp":1790337803287,"version":"4.1.0"},"reference-count":71,"publisher":"Wiley","issue":"18","license":[{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemPhysChem"],"published-print":{"date-parts":[[2026,9,28]]},"abstract":"<jats:p>\n                    A\n                    <jats:italic>D<\/jats:italic>\n                    <jats:sub>4h<\/jats:sub>\n                    screening of the 25 H\u00a9M\n                    <jats:sub>4<\/jats:sub>\n                    X\n                    <jats:sub>4<\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    combinations (M = Li\u2013Cs; X = F\u2013At), followed by unbiased global\u2010minimum searches on the nine vibrationally stable candidates, reveals eight previously unreported planar tetracoordinate hydrogen (ptH) global minima adopting\n                    <jats:italic>D<\/jats:italic>\n                    <jats:sub>4h<\/jats:sub>\n                    symmetry, bringing the total number of known\n                    <jats:italic>D<\/jats:italic>\n                    <jats:sub>4h<\/jats:sub>\n                    ptH clusters in the alkali\u2010metal\u2013halogen family to nine. Born\u2013Oppenheimer molecular dynamics confirms dynamic stability at 300\u2009K across the entire series, with thermal isomerization observed at 600 K in three of the nine clusters. In all cases, the central hydrogen carries a substantial negative charge and is stabilized predominantly by electrostatic H\n                    <jats:sup>\u2212<\/jats:sup>\n                    \u00b7\u00b7\u00b7M\n                    <jats:sup>+<\/jats:sup>\n                    interactions, while the peripheral M\u2013X framework compensates the intrinsic metal\u2013metal repulsion and preserves the planar arrangement. Although a small non\u2010Coulombic contribution exists within the M\u2013X framework, multicenter bonding plays no significant role in the stabilization of the central hydrogen. The magnetic response is dominated by localized diatropic vortices at the atomic cores, with no evidence of a global ring current, confirming the nonaromatic character of these assemblies. These results reframe ptH stabilization within a predominantly electrostatic framework and provide a predictive framework for further expansion of this emerging family.\n                  <\/jats:p>","DOI":"10.1002\/cphc.70570","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T01:55:05Z","timestamp":1790214905000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Planar Tetracoordinate Hydrogen Stabilized Within Alkali Metal\u2013Halogen Frameworks"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3689-3125","authenticated-orcid":false,"given":"Dumer S.","family":"Sacanamboy","sequence":"first","affiliation":[{"name":"Centro de Investigaci\u00f3n para el Dise\u00f1o de Materiales (CEDEM) Facultad de Ciencias Exactas Departamento de Ciencias Qu\u00edmicas Universidad Andr\u00e9s Bello  Santiago Chile"},{"name":"Doctorado en Fisicoqu\u00edmica 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