- A B-C double bond unit coordinated to platinum: An alkylideneboryl ligand that is isoelectronic to neutral aminoborylene ligands
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The reaction of [Pt(PCy3)2] with Br 2B-CH(SiMe3)2 resulted in generation of the first alkylideneboryl complex, trans-[Br(Cy3P)2Pt{B= CH(SiMe3)}], with concomitant elimination of Me3SiBr. The trans bromide ligand of the alkylideneboryl complex was readily substituted by a methyl group upon treatment with methyllithium, leading to another alkylideneboryl complex, trans-[Me(Cy3P)2Pt{B=CH(SiMe 3)}]. Various spectrochemical techniques, single-crystal X-ray crystallography, and quantum chemical calculations confirmed the formulation of a double bond between the boron and the carbon atom. The theoretical studies also provided evidence for the stronger trans influence of the alkylideneboryl ligand over iminoboryl and oxoboryl ligands. Copyright
- Brand, Johannes,Braunschweig, Holger,Hupp, Florian,Phukan, Ashwini K.,Radacki, Krzysztof,Sen, Sakya S.
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- Oxidative addition of arsenic halides to platinum(0)
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Reaction of AsCl3 with Pt(0) complexes [Pt(PCy3)2], [Pt(PCy3)(IMes)] and [Pt(IMes)2] (IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) resulted in oxidative addition of As-Cl bonds at the Pt centres to form complexes of the form trans-[PtCl(AsCl2)L2]. Two of these compounds were characterised by X-ray diffraction, making them the first structurally characterised examples of AsX2 ligands (X = halogen). AsBr3 also underwent oxidative addition to [Pt(PCy3)2], forming trans-[PtBr(AsBr2)(PCy3)2] in situ, as judged by 31P NMR spectroscopy. This reaction was unselective, yielding several products, of which a Pt3As2 cluster could be identified by single-crystal X-ray diffraction.
- Muessig, Jonas H.,Stennett, Tom E.,Schmidt, Uwe,Dewhurst, Rian D.,Mail?nder, Lisa,Braunschweig, Holger
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supporting information
p. 3547 - 3550
(2019/04/25)
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- New metal-only Lewis pairs: Elucidating the electronic influence of N -heterocyclic carbenes and phosphines on the dative Pt-Al bond
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The synthesis and full characterization of a new heteroleptic N-heterocyclic carbene (NHC)-phosphine platinum(0) complex and formation of its corresponding alane adduct is reported. The influence of the ligands on the Lewis basic properties was studied vi
- Bauer, Juergen,Bertermann, Ruediger,Braunschweig, Holger,Gruss, Katrin,Hupp, Florian,Kramer, Thomas
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p. 5617 - 5626
(2012/06/30)
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- Interaction between d- and p-block metals: Synthesis and structure of platinum-alane adducts
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(Figure Presented) You'll never walk alane: An intriguing T-shaped platinum-alane adduct results from the almost quantitive reaction of [Pt(PCy3)2] with AlX3 (X = Cl, Br, I). The compound [(Cy3P)2Pt-A
- Braunschweig, Holger,Gruss, Katrin,Radacki, Krzysztof
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p. 7782 - 7784
(2008/09/18)
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