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The <jats:italic>g<\/jats:italic> matrices were distinctly dependent on the molecular structure of the radical. To thoroughly examine this dependence, the contributions from individual atoms and excited states were calculated. The former revealed the gain from the phosphorus atom to be preeminent unless P\uf8ffO or P\uf8ffS bonds are present in the radical molecule. The contributions owing to excited states arising from electronic transitions between doubly occupied molecular orbitals and the SOMO were clearly positive, as in the case of semiquinone and niroxide radicals. The transitions from the phosphorus lone pair were of paramount importance. Surprisingly, unlike for semiquinones and nitroxides, a significant negative contribution was observed from excitations from the SOMO to unoccupied molecular orbitals. For radicals with P\uf8ffO bonds, this contribution to the <jats:italic>g<\/jats:italic><jats:sub>2<\/jats:sub> component was dominant.<\/jats:p>","DOI":"10.1002\/cphc.201500121","type":"journal-article","created":{"date-parts":[[2015,4,14]],"date-time":"2015-04-14T15:37:51Z","timestamp":1429025871000},"page":"1912-1925","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Theoretical Characterisation of Phosphinyl Radicals and Their Magnetic Properties: <i>g<\/i> Matrix"],"prefix":"10.1002","volume":"16","author":[{"given":"Maciej","family":"Witwicki","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2015,4,14]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1039\/c2cp40459a"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/bi500654y"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja205001m"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja2001538"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.201402060"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr200233g"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja504001x"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1080\/10715760802585236"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.freeradbiomed.2009.01.004"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja208462t"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.201100982"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja502675d"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp411023k"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201002626"},{"key":"e_1_2_6_14_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201002626"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp909614u"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.gca.2012.03.010"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.200500640"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200700157"},{"key":"e_1_2_6_18_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200700157"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1021\/tx4004227"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemosphere.2013.01.048"},{"key":"e_1_2_6_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemosphere.2014.07.047"},{"volume-title":"Radicals, Ion Radicals, and Triplets","year":"1997","author":"Bauld N. 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