{"title":"[cr30o (O2CR)6(L)3]+ (R = Me, Ph)氧中心三核铬配合物的碳-13 NMR研究L = H2O, py)","authors":"K. Belmore, X.J. Madison, A. Harton, J.B. Vincent","doi":"10.1016/0584-8539(94)E0003-S","DOIUrl":null,"url":null,"abstract":"<div><p><sup>13</sup>C NMR resonances of a series of oxo-centered trinuclear chromium complexes have been observed and assigned. A π-delocalization mechanism dominates where ligands contain aromatic substituents or bridging carboxylate functionalities, consistent with the presence of a metal center where to first approximation unpaired electrons reside solely in <em>t</em><sub>2g</sub>. orbitals. A contrast is made between the delocalization mechanism in these complexes and those of their isostructural Mn and Fe analogues.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 14","pages":"Pages 2365-2370"},"PeriodicalIF":0.0000,"publicationDate":"1994-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)E0003-S","citationCount":"11","resultStr":"{\"title\":\"Carbon-13 NMR studies of oxo-centered trinuclear chromium(III) complexes of the general formula [Cr3O(O2CR)6(L)3]+ (R = Me, Ph; L = H2O, py)\",\"authors\":\"K. Belmore, X.J. Madison, A. Harton, J.B. Vincent\",\"doi\":\"10.1016/0584-8539(94)E0003-S\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><sup>13</sup>C NMR resonances of a series of oxo-centered trinuclear chromium complexes have been observed and assigned. A π-delocalization mechanism dominates where ligands contain aromatic substituents or bridging carboxylate functionalities, consistent with the presence of a metal center where to first approximation unpaired electrons reside solely in <em>t</em><sub>2g</sub>. orbitals. A contrast is made between the delocalization mechanism in these complexes and those of their isostructural Mn and Fe analogues.</p></div>\",\"PeriodicalId\":82782,\"journal\":{\"name\":\"Spectrochimica acta. Part A: Molecular spectroscopy\",\"volume\":\"50 14\",\"pages\":\"Pages 2365-2370\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0584-8539(94)E0003-S\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Spectrochimica acta. Part A: Molecular spectroscopy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0584853994E0003S\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectrochimica acta. Part A: Molecular spectroscopy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0584853994E0003S","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Carbon-13 NMR studies of oxo-centered trinuclear chromium(III) complexes of the general formula [Cr3O(O2CR)6(L)3]+ (R = Me, Ph; L = H2O, py)
13C NMR resonances of a series of oxo-centered trinuclear chromium complexes have been observed and assigned. A π-delocalization mechanism dominates where ligands contain aromatic substituents or bridging carboxylate functionalities, consistent with the presence of a metal center where to first approximation unpaired electrons reside solely in t2g. orbitals. A contrast is made between the delocalization mechanism in these complexes and those of their isostructural Mn and Fe analogues.
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