DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Joon Taik | ko |
dc.contributor.author | Song, Hyunjoon | ko |
dc.contributor.author | Cho, JJ | ko |
dc.contributor.author | Chung, MK | ko |
dc.contributor.author | Lee, JH | ko |
dc.date.accessioned | 2010-12-22T09:17:06Z | - |
dc.date.available | 2010-12-22T09:17:06Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1998-01 | - |
dc.identifier.citation | ORGANOMETALLICS, v.17, no.2, pp.227 - 236 | - |
dc.identifier.issn | 0276-7333 | - |
dc.identifier.uri | http://hdl.handle.net/10203/21192 | - |
dc.description.abstract | Various eta(2)-C-60 and mu(3)-eta(2),eta(2),eta(2)-C-60 triosmium carbonyl cluster complexes Os-3(CO)(11)(eta(2)-C-60) (1), Os-3(CO)(10)(NCMe)(eta(2)-C-60) (2), Os-3(CO)(10)(PPh3)(eta(2)-C-60) (3), Os-3(CO)(9)(PR3)(2)(eta(2)-C-60) (4, R = Ph; 5, R = Me), Os-3(CO)(9)(mu(3)-eta(2),eta(2),eta(2)-C-60) (6), and Os-3(CO)(8)(PMe3)(mu(3)-eta(2),eta(2),eta(2)-C-60) (7) have been isolated as crystalline solids and characterized by spectroscopic (IR, MS, and H-1, P-31, and C-13 NMR) and analytical data. The molecular structure of complex 1 has been determined by a single-crystal X-ray diffraction study. The structure of 1 is derived from that of Os-3(CO)(12) by replacing an equatorial carbonyl ligand with an eta(2)-C-60 ligand coordinated through a 6-6 ring fusion. The structural assignment of 2-7 is made on the basis of spectroscopic results. Compound 2 exists as two isomers in solution in a ratio of 2:1 (2a: 2b). VT C-13 NMR spectra of 2a and 5 indicate that both complexes undergo similar fluxional processes of restricted equilibration of in-plane equatorial C-60 and carbonyl ligands via a triply bridged intermediate with identical values of Delta G(c)(not equal) = 12.7 +/- 0.1 kcal/mol. Thermolysis of 2 in refluxing chlorobenzene affords Os-3(CO)(9)(mu(3)-eta(2),eta(2),eta(2)-C-60) (6) in 23% yield, which can be alternatively prepared in 32% yield from the reaction of Os-3(CO)(10)(NCMe)(2) (2 equiv) and C-60 (1 equiv). Decarbonylation of 6 with Me3NO/MeCN reagent in the presence of excess PMe3 gives Os-3(CO)(8)(PMe3)(mu(3)-eta(2),eta(2),eta(2)-C-60) (7) in a quantitative yield. VT C-13 NMR spectra of both 6 and 7 reveal a localized-3-fold rotation of carbonyl and phosphine ligands on each osmium center. | - |
dc.description.sponsorship | We are grateful to the Korea Advanced Institute of Science and Technology for financial support of this research. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | LIGAND-SUBSTITUTED DERIVATIVES | - |
dc.subject | X-RAY STRUCTURES | - |
dc.subject | L = PPH3 | - |
dc.subject | CRYSTAL-STRUCTURE | - |
dc.subject | SOLUTION DYNAMICS | - |
dc.subject | C-60 | - |
dc.subject | CHEMISTRY | - |
dc.subject | BUCKMINSTERFULLERENE | - |
dc.subject | STEREOCHEMISTRY | - |
dc.subject | P(OCH2CF3)3 | - |
dc.title | Synthesis and characterization of eta(2)-C-60 and mu(3)-eta(2),eta(2),eta(2)-C-60 triosmium cluster complexes | - |
dc.type | Article | - |
dc.identifier.wosid | 000071670700017 | - |
dc.identifier.scopusid | 2-s2.0-0000165965 | - |
dc.type.rims | ART | - |
dc.citation.volume | 17 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 227 | - |
dc.citation.endingpage | 236 | - |
dc.citation.publicationname | ORGANOMETALLICS | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Park, Joon Taik | - |
dc.contributor.localauthor | Song, Hyunjoon | - |
dc.contributor.nonIdAuthor | Cho, JJ | - |
dc.contributor.nonIdAuthor | Chung, MK | - |
dc.contributor.nonIdAuthor | Lee, JH | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | LIGAND-SUBSTITUTED DERIVATIVES | - |
dc.subject.keywordPlus | X-RAY STRUCTURES | - |
dc.subject.keywordPlus | L = PPH3 | - |
dc.subject.keywordPlus | CRYSTAL-STRUCTURE | - |
dc.subject.keywordPlus | SOLUTION DYNAMICS | - |
dc.subject.keywordPlus | C-60 | - |
dc.subject.keywordPlus | CHEMISTRY | - |
dc.subject.keywordPlus | BUCKMINSTERFULLERENE | - |
dc.subject.keywordPlus | STEREOCHEMISTRY | - |
dc.subject.keywordPlus | P(OCH2CF3)3 | - |
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