η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n)
The complexes Cp*Re(CO)2(η²-C6H6-nCl n), n = 4, (5,6-η²-1,2,3,4-C6H2Cl4) 2a; n = 3, (5,6-η²-1,2,4-C6H3Cl3) 2b; n = 2, (2,3-η²-1,4-C6H4Cl2) 2c and (4,5-ç²-1,3-C6H4Cl2) 2d, have been conveniently prepared by two alternative procedures: Directly, by the photochemical...
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Sociedad Chilena de Química
2011
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oai:scielo:S0717-970720110003000222012-01-11η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n)KLAHN,A. HUGOMORALES,VERÓNICAOELCKERS,BEATRIZBUONO-CORE,GONZALO EGOMEZ,JOHANDGODOY,FERNANDOThe complexes Cp*Re(CO)2(η²-C6H6-nCl n), n = 4, (5,6-η²-1,2,3,4-C6H2Cl4) 2a; n = 3, (5,6-η²-1,2,4-C6H3Cl3) 2b; n = 2, (2,3-η²-1,4-C6H4Cl2) 2c and (4,5-ç²-1,3-C6H4Cl2) 2d, have been conveniently prepared by two alternative procedures: Directly, by the photochemical reaction of Cp*Re(CO)2(N2) in neat or saturated hexane solution of the corresponding partially chlorinated benzene or stepwise, by the reaction of the appropriate trans-Cp*Re(CO)2(ArCl)X, X = Cl, Br (1a-d) with LiBHEt3 followed by protonation with HCl to form the hydrido complexes trans-Cp*Re(CO)2(ArCl)H which resulted thermally unstable in solution and convert to η ²-coordination complexes 2a-d. Due to their low stability as solids and in solution, the new complexes were only characterized by IR and ¹H and 13C NMR spectroscopy. The ¹H NMR spectra of the two derivatives containing dichlorobenzene (2c and 2d) indicate that a rapid exchange occurs between the hydrogen atoms on the coordinated carbons and those on the non-coordinated carbons.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.56 n.3 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000300022en10.4067/S0717-97072011000300022 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| description |
The complexes Cp*Re(CO)2(η²-C6H6-nCl n), n = 4, (5,6-η²-1,2,3,4-C6H2Cl4) 2a; n = 3, (5,6-η²-1,2,4-C6H3Cl3) 2b; n = 2, (2,3-η²-1,4-C6H4Cl2) 2c and (4,5-ç²-1,3-C6H4Cl2) 2d, have been conveniently prepared by two alternative procedures: Directly, by the photochemical reaction of Cp*Re(CO)2(N2) in neat or saturated hexane solution of the corresponding partially chlorinated benzene or stepwise, by the reaction of the appropriate trans-Cp*Re(CO)2(ArCl)X, X = Cl, Br (1a-d) with LiBHEt3 followed by protonation with HCl to form the hydrido complexes trans-Cp*Re(CO)2(ArCl)H which resulted thermally unstable in solution and convert to η ²-coordination complexes 2a-d. Due to their low stability as solids and in solution, the new complexes were only characterized by IR and ¹H and 13C NMR spectroscopy. The ¹H NMR spectra of the two derivatives containing dichlorobenzene (2c and 2d) indicate that a rapid exchange occurs between the hydrogen atoms on the coordinated carbons and those on the non-coordinated carbons. |
| author |
KLAHN,A. HUGO MORALES,VERÓNICA OELCKERS,BEATRIZ BUONO-CORE,GONZALO E GOMEZ,JOHAND GODOY,FERNANDO |
| spellingShingle |
KLAHN,A. HUGO MORALES,VERÓNICA OELCKERS,BEATRIZ BUONO-CORE,GONZALO E GOMEZ,JOHAND GODOY,FERNANDO η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| author_facet |
KLAHN,A. HUGO MORALES,VERÓNICA OELCKERS,BEATRIZ BUONO-CORE,GONZALO E GOMEZ,JOHAND GODOY,FERNANDO |
| author_sort |
KLAHN,A. HUGO |
| title |
η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| title_short |
η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| title_full |
η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| title_fullStr |
η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| title_full_unstemmed |
η²-COORDINATION OF CHLOROBENZENES TO RHENIUM FRAGMENT Cp*Re(CO)2: CHEMICAL AND PHOTOCHEMICAL SYNTHESES OF Cp*Re(CO)2(η²-C6H6-nCl n) |
| title_sort |
η²-coordination of chlorobenzenes to rhenium fragment cp*re(co)2: chemical and photochemical syntheses of cp*re(co)2(η²-c6h6-ncl n) |
| publisher |
Sociedad Chilena de Química |
| publishDate |
2011 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000300022 |
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| _version_ |
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