Phosphorus-Containing Dendrimers as Multidentate Ligands:  Palladium, Platinum, and Rhodium Complexes

Bardajı́, Manuel; Kustos, Monika; Caminade, Anne‐Marie; Majoral, Jean‐Pierre; Chaudret, Bruno

doi:10.1021/om9606101

Cited by 88 publications

(47 citation statements)

References 48 publications

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“…[6] For example, they have been treated with complexes such as [Rh(acac)(COD)] [7] or [Pd(µ-Cl)(η 3 -2-MeC 3 H 4 )] 2 . [8] Several reports describe peripheral platinumcontaining dendrimers, but only one example shows platinum centers bonded to phosphorus atoms.…”

Section: Platinum Dendrimersmentioning

confidence: 99%

“…[8] Several reports describe peripheral platinumcontaining dendrimers, but only one example shows platinum centers bonded to phosphorus atoms. [7] In this paper we have functionalized the surface of our P-branched dendrimers with platinum by reaction with [PtCl 2 (COD)]. We also synthesised the model compounds [PtCl 2 (PPh 2 CH 2 SiMe 3 ) 2 ] (4) and [PtCl 2 {Me 2 Si-(CH 2 PPh 2 ) 2 }] (5).…”

Section: Platinum Dendrimersmentioning

confidence: 99%

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Palladium and Platinum Units Grafted on the Periphery of Carbosilane Dendrimers

Benito

Rossell

Seco

et al. 2002

Eur. J. Inorg. Chem.

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The reaction of a series of phosphanyl-terminated carbosilane dendrimers with palladium and platinum complexes was carried out. The new metallodendrimers containing PdCl(η 3 -2-MeC 3 H 4 ) and PtCl 2 or Pt(CϵCPh) 2 as peripheral groups were characterized by 1 H, 13 C, 29 Si, 31 P, and 195 Pt NMR spectroscopy, and, in some cases, by mass spectrometry. The PtCl 2 -containing species of the second-generation carbosilane dendrimer displays only one of the two possible stereoisomers. By comparison with the 31 P NMR spectra of the model compounds cis-[PtCl 2 (PPh 2 CH 2 SiMe 3 ) 2 ] (4) and cis-

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Section: Platinum Dendrimersmentioning

confidence: 99%

Section: Platinum Dendrimersmentioning

confidence: 99%

Palladium and Platinum Units Grafted on the Periphery of Carbosilane Dendrimers

Benito

Rossell

Seco

et al. 2002

Eur. J. Inorg. Chem.

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“…The identity of the novel cyclotetrasiloxanebased dendrimers was straightforwardly confirmed by a variety of techniques, including 1 H, 13 C and 29 Si NMR and IR spectroscopies and UV-visible spectroscopy, as well as by fast atom bombardment mass spectrometry (FAB-MS), molecular weight determination (VPO) and elemental analysis, which gave data consistent with their proposed structures.…”

Section: Synthesis and Characterization Of Cyclotetrasiloxane-based Dmentioning

confidence: 68%

“…6 Dendrimers are nanosized, well defined, highly branched macromolecules emanating from a central core to a periphery that becomes more dense with increasing generation number (for recent reviews on dendrimers, see, e.g., . On the basis of the well-known organotransition metal chemistry, it is clear that the incorporation of organometallic entities on the surface or within the dendritic structures represents a stimulating challenging target in both organometallics and dendrimers research 6 (Refs [13][14][15][16][17][18][19][20] give examples concerning organometallic dendrimers; see also , because it provides a unique opportunity for tailoring organometallic dendrimers to achieve desirable properties for well-defined applications (for example, as dendritic catalysts, in multielec-tron redox and photocatalytic processes, as molecular sensors, and so on).…”

Section: Introductionmentioning

confidence: 99%

Cyclic siloxanes and silsesquioxanes as cores and frameworks for the construction of ferrocenyl dendrimers and polymers

Casado

Cuadrado

Morán

et al. 1999

Appl. Organometal. Chem.

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Starting from 1,3,5,7‐tetramethylcyclotetrasiloxane as core, novel ferrocenyl silicon‐containing dendrimers have been constructed up to the third generation, which contains 16 peripheral ferrocene moieties. As precursors of these ferrocenyl dendritic molecules, SiCl‐ and Siallyl‐terminated cyclotetrasiloxane‐based dendrimers were also built step by step, by the repetition of hydrosilylation and alkenylation reactions as growing steps. The dendritic structures have been confirmed by 1H, 13C and 29Si NMR, infrared spectroscopy, elemental analysis, mass spectrometry and vapor‐pressure osmometry. Solution electrochemical studies showed that all the ferrocenyl redox centers attached to the dendritic surface behave as independent, electronically isolated units, so that the dendrimers exchange all the electrons simultaneously at the same potential. We also describe the application of the first redox‐active ferrocenyl polymer containing an octakis(dimethylsiloxy)octasilsesquioxane framework, as a mediator in the electrocatalytic oxidation of ascorbic acid. Copyright © 1999 John Wiley & Sons, Ltd.

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“…The presence of Au-Cl on 14-G n allows also the grafting of Fe/Au clusters on the surface of the dendrimers [32]. With the diphosphino end groups, various organometallic derivatives of transition metals are grafted, such as ruthenium (compound 16-G n ) [33], palladium (compound 17-G n ) (Scheme 6), platinum, or rhodium [34]. NH 2 -terminated dendrimers of type 6b-G n or others [35] are used also in condensation reactions with various aldehydes [36].…”

Section: Methodsmentioning

confidence: 99%