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Article: N-heterocyclic carbene Pt(ii) complexes from caffeine: Synthesis, structures and photoluminescent properties

TitleN-heterocyclic carbene Pt(ii) complexes from caffeine: Synthesis, structures and photoluminescent properties
Authors
Issue Date2011
Citation
Dalton Transactions, 2011, v. 40, n. 17, p. 4402-4406 How to Cite?
AbstractThe caffeine-derived N-heterocyclic carbene (NHC) complex [Pt II(CN)(NHC)Cl] (CN = 2-phenylpyridine), 4 has the opposite stereochemistry and a shorter Pt-Ccarbene bond compared to that of an analogous benzimidazole-derived N,N-heterocyclic carbene (NNHC) Pt complex 2. These suggest a lower trans influence of pyridyl N compared to cyclometallated carbon and an increased Pt-NHC π-backbonding because of decreased π-donation resulting from conjugation to the electron deficient pyrimidine of caffeine. Complex 4 has a lower emission quantum yield (Φ) and is blue-shifted into the green region of the visible spectrum relative to non-carbene Pt(ii) cyclometalated complex 5. © 2011 The Royal Society of Chemistry.
Persistent Identifierhttp://hdl.handle.net/10722/219650
ISSN
2015 Impact Factor: 4.177
2015 SCImago Journal Rankings: 1.404

 

DC FieldValueLanguage
dc.contributor.authorHu, Jian Jin-
dc.contributor.authorBai, Shi Qiang-
dc.contributor.authorYeh, Hsiu Hsuan-
dc.contributor.authorYoung, David J.-
dc.contributor.authorChi, Yun-
dc.contributor.authorHor, T. S Andy-
dc.date.accessioned2015-09-23T02:57:37Z-
dc.date.available2015-09-23T02:57:37Z-
dc.date.issued2011-
dc.identifier.citationDalton Transactions, 2011, v. 40, n. 17, p. 4402-4406-
dc.identifier.issn1477-9226-
dc.identifier.urihttp://hdl.handle.net/10722/219650-
dc.description.abstractThe caffeine-derived N-heterocyclic carbene (NHC) complex [Pt II(CN)(NHC)Cl] (CN = 2-phenylpyridine), 4 has the opposite stereochemistry and a shorter Pt-Ccarbene bond compared to that of an analogous benzimidazole-derived N,N-heterocyclic carbene (NNHC) Pt complex 2. These suggest a lower trans influence of pyridyl N compared to cyclometallated carbon and an increased Pt-NHC π-backbonding because of decreased π-donation resulting from conjugation to the electron deficient pyrimidine of caffeine. Complex 4 has a lower emission quantum yield (Φ) and is blue-shifted into the green region of the visible spectrum relative to non-carbene Pt(ii) cyclometalated complex 5. © 2011 The Royal Society of Chemistry.-
dc.languageeng-
dc.relation.ispartofDalton Transactions-
dc.titleN-heterocyclic carbene Pt(ii) complexes from caffeine: Synthesis, structures and photoluminescent properties-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1039/c0dt01380c-
dc.identifier.pmid21409198-
dc.identifier.scopuseid_2-s2.0-79954586786-
dc.identifier.volume40-
dc.identifier.issue17-
dc.identifier.spage4402-
dc.identifier.epage4406-
dc.identifier.eissn1477-9234-

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