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These reactions are environmentally benign and atom economic, implementing an inexpensive, earth abundant non\u2010precious metal catalyst. The catalytic process is initiated by migratory insertion of a CO ligand into the Mn\u2010alkyl bond to yield an acyl intermediate which undergoes rapid hydrogenolysis to form the active 16e Mn(I) hydride catalyst [Mn(PC\u2010\n                    <jats:italic>i<\/jats:italic>\n                    Pr)(CO)\n                    <jats:sub>2<\/jats:sub>\n                    (H)]. A range of mono\u2010 and disubstituted alkenes were efficiently converted into alkanes in good to excellent yields. The hydrogenation requires a reaction temperature of 60\u2009\u00b0C. In all cases, a catalyst loading of 1\u2005mol % and a hydrogen pressure of 50\u2005bar was applied. A mechanism based on DFT calculations is presented which is supported by experimental studies.\n                  <\/jats:p>","DOI":"10.1002\/cctc.202401172","type":"journal-article","created":{"date-parts":[[2024,8,10]],"date-time":"2024-08-10T14:04:43Z","timestamp":1723298683000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Hydrogenation of Alkenes Catalyzed by Mn(I) Alkyl Complexes Bearing NHC Phosphine Ligands"],"prefix":"10.1002","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2241-3565","authenticated-orcid":false,"given":"Daniel P.","family":"Zobernig","sequence":"first","affiliation":[{"name":"Institute of Applied Synthetic Chemistry TU Wien  Getreidemarkt 9\/163-AC A-1060 Wien Austria"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0087-474X","authenticated-orcid":false,"given":"Berthold","family":"St\u00f6ger","sequence":"additional","affiliation":[{"name":"X-Ray Center TU Wien  Getreidemarkt 9\/163-AC A-1060 Wien Austria"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5841-3519","authenticated-orcid":false,"given":"Luis F.","family":"Veiros","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Institute of Molecular Sciences Departamento de Engenharia Qu\u00edmica Instituto Superior T\u00e9cnico Universidade de Lisboa  Av. 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