1999
DOI: 10.1021/om990104m
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Synthesis of a Series of Rhodium Complexes, TpiPrRhIL2and TpiPrRhIII(X)(Y)(MeCN), with the Hydridotris(3,5-diisopropylpyrazolyl)borato Ligand (TpiPr) from a Versatile Precursor, (κ3-TpiPr)Rh(coe)(MeCN), and Dependence of κ2−κ3Interconversion Rate of the TpiPrLigand on the Chelate Ring Size

Abstract: The labile Rh(I) species Tp iPr Rh(coe)(MeCN) (1) was prepared by the reaction of [RhCl-(coe) 2 ] 2 with KTp iPr followed by crystallization from MeCN. Subsequent treatment of 1 with diphosphines and CO gave square-planar Tp iPr Rh I L 2 -type products via replacement of the coe and MeCN ligands. The Rh(III) complexes Tp iPr Rh(X)(Y)(MeCN) were obtained via oxidative addition of XY and dissociation of the coe ligand. Complex 1 serves as a versatile starting compound for a variety of Rh(I) and Rh(III) complexes… Show more

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Cited by 27 publications
(15 citation statements)
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References 13 publications
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“…Solvents were dried by common procedures and distilled under nitrogen before use. Complexes 1 [22] and 2 [20] were prepared according to the literature methods. Other reagents were commercially available and used as received.…”
Section: Methodsmentioning
confidence: 99%
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“…Solvents were dried by common procedures and distilled under nitrogen before use. Complexes 1 [22] and 2 [20] were prepared according to the literature methods. Other reagents were commercially available and used as received.…”
Section: Methodsmentioning
confidence: 99%
“…We have recently reported the first reliable route to synthesize rhodium thiolate complexes with Tp ancillary ligands and their chalcogenolate congeners [20,21]. The Rh(I) complex [TpRh(coe)(MeCN)] (coe = g 2 -cyclooctene) and its hydrotris(3,5-dimethylpyrazolyl)-borate (Tp * ) analog [Tp * Rh(coe)(MeCN)] (1) [22] react with a range of organic disulfides to give mononuclear bis(thiolate) complexes, as exemplified in Eq. (1).…”
Section: Introductionmentioning
confidence: 99%
“…Beim Rühren einer Diethyletherlösung des quadratischplanaren Rh I -Komplexes [(Tp iPr )Rh(dppe)] 1 [5,6] Komplex 2 enthielt den Liganden 3,5-Di-2-propylpyrazol (pz iPr H), der aus der partiellen Zersetzung des Liganden Tp iPr stammt; bei der Oxygenierung von 1 in Anwesenheit von pz iPr H verbesserte sich die Ausbeute von 2 auf 23 %, während sich die Ausbeute von 3 kaum änderte (51 %).…”
unclassified
“…Die Anlagerung von Sauerstoff an 1 sollte anfangs zu dem einfachen O 2 -Addukt [(Tp iPr )Rh(h 2 -O 2 )(dppe)] A führen, das sich durch Oxidation des koordinierenden dppe-Liganden in B überführen läût. Im Unterschied zu anderen Komplexen des Typs [(Tp iPr )Rh(L) 2 ] (L 0.5 Dien, Olefin, CO), die gegenüber O 2 inert sind, [6,7] läût sich an den Komplex 1 mit dem elektronenschiebenden dppe-Liganden leicht O 2 addieren. Die nachfolgende ortho-Metallierung des Phosphanoxid-Liganden in B liefert 3, [13] während ein Teil von B mit einem O 2 -Molekül (3C) weiterreagiert, was nach der Eliminierung von dppe(O) 2 und Koordination von pz iPr H zum isolierbaren O 2 -Addukt D (2) führt.…”
unclassified
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