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The molecular orbital and EDA\u2010NOCV analysis suggest dative quadruple bonds between the transition metal and beryllium, viz., one Be\u2192M <jats:italic>\u03c3<\/jats:italic> bond, one Be\u2190M <jats:italic>\u03c3<\/jats:italic> bond, and two Be\u2190M \u03c0 bonds. The strength of these bonding interactions varies based on the ligands coordinated to the transition metal. The Be\u2190M <jats:italic>\u03c3<\/jats:italic> bond is stronger than the Be\u2192M <jats:italic>\u03c3<\/jats:italic> bond when the ligand is PMe<jats:sub>3,<\/jats:sub> whereas the reverse order is observed when the ligand is CO. This is attributed to the higher \u03c0 acceptor strength of CO as compared to PMe<jats:sub>3<\/jats:sub>. Since these complexes have M\u2013Be dative quadruple bonds, the beryllium center is susceptible to ambiphilic reactivity, as indicated by high proton and hydride affinity values.<\/jats:p>","DOI":"10.1002\/jcc.27115","type":"journal-article","created":{"date-parts":[[2023,4,26]],"date-time":"2023-04-26T09:30:42Z","timestamp":1682501442000},"page":"1645-1652","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Dative quadruple bonds between d<sup>10<\/sup> transition metals and beryllium in <scp>BeM<\/scp>(<scp>PMe<sub>3<\/sub><\/scp>)<sub>2<\/sub> and <scp>BeM<\/scp>(<scp>CO<\/scp>)<sub>2<\/sub> (<scp>M<\/scp>\u2009=\u2009<scp>Ni, Pd<\/scp>, and <scp>Pt<\/scp>) complexes: Transition metal fragments as <scp>six\u2010electron<\/scp> donor and <scp>two\u2010electron<\/scp> acceptor"],"prefix":"10.1002","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4480-7685","authenticated-orcid":false,"given":"Sneha","family":"Parambath","sequence":"first","affiliation":[{"name":"Department of Chemistry National Institute of Technology, Calicut  Kozhikode India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vishnu","family":"Thannimangalath","sequence":"additional","affiliation":[{"name":"Department of Chemistry National Institute of Technology, Calicut  Kozhikode India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2065-2463","authenticated-orcid":false,"given":"Pattiyil","family":"Parameswaran","sequence":"additional","affiliation":[{"name":"Department of Chemistry National Institute of Technology, Calicut  Kozhikode India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,4,26]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.8b00722"},{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2017.03.026"},{"key":"e_1_2_8_2_3","doi-asserted-by":"publisher","DOI":"10.1038\/nature08634"},{"key":"e_1_2_8_2_4","doi-asserted-by":"publisher","DOI":"10.1021\/cr900333n"},{"key":"e_1_2_8_2_5","doi-asserted-by":"publisher","DOI":"10.1039\/C4CS00073K"},{"key":"e_1_2_8_2_6","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2014.11.008"},{"key":"e_1_2_8_2_7","doi-asserted-by":"publisher","DOI":"10.1021\/cr020406p"},{"key":"e_1_2_8_2_8","first-page":"25","volume-title":"The Chemical Bond. 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