Structural Analysis of Chiral Complexes of Palladium(0) with 15-Membered Triolefinic Macrocyclic Ligands
The complete structural analysis of the palladium complexes of the triolefinic macrocycles (E,E,E)‐1,6,11‐tris(arylsulfonyl)‐1,6,11‐triazacyclopentadeca‐3,8,13‐trienes, which featured from three identical to three different aryl groups, was achieved by performing X‐ray diffraction studies, NMR spect...
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Published in | Chemistry : a European journal Vol. 11; no. 9; pp. 2689 - 2697 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
22.04.2005
WILEY‐VCH Verlag Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | The complete structural analysis of the palladium complexes of the triolefinic macrocycles (E,E,E)‐1,6,11‐tris(arylsulfonyl)‐1,6,11‐triazacyclopentadeca‐3,8,13‐trienes, which featured from three identical to three different aryl groups, was achieved by performing X‐ray diffraction studies, NMR spectroscopy, and other calculations. The stereochemical complexity is determined by the different isomers formed through complexation of the metal to one or other face of each of the three olefins involved. The palladacyclopropane formulation of the palladium–olefin interaction offers a clear picture of the stereogenicity of the olefin carbon atoms that are complexed to the metal. The energetically favorable isomers were identified in the solid‐state and in solution by performing X‐ray diffraction and NMR spectroscopic analysis, respectively.
Els complexos de pal⋅ladi de macrocicles triolefínics de tipus (E,E,E)‐1,6,11‐tris(arilsulfonil)‐1,6,11‐triazaciclopentadeca‐3,8,13‐triè, contenint des de tres unitats aríliques iguals fins a tres de diferents han estat estudiats mitjançant difracció de Raigs‐X, espectroscòpia de RMN i càlculs teòrics. La complexitat estereoquímica deriva dels diferents isomers que es poden formar degut a la complexació del metall amb cadascuna de les dues cares de les tres olefines. La representació dels enllaços metall‐olefina com a pal⋅ladaciclopropans permet una visualització més senzilla de l′estereoquímica dels àtoms de carboni olefínics després de la complexació. Els isomers energèticament possibles han estat determinats en l′estat sòlid i en solució mitjançant difracció de Raigs‐X i espectroscòpia de RMN respectivament.
Chiral palladium(0) complexes unravelled: The complete structural analysis of chiral complexes of palladium(0) with 15‐membered triolefinic macrocyclic ligands (see picture) was achieved by performing NMR spectroscopic and X‐ray diffraction studies. |
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Bibliography: | istex:A55ABB7DED5A7374E481D3613D4DC8D43B5B5BB5 ark:/67375/WNG-M4TDWFJ8-K ArticleID:CHEM200401073 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0947-6539 1521-3765 |
DOI: | 10.1002/chem.200401073 |