A B–C Double Bond Unit Coordinated to Platinum: An Alkylideneboryl Ligand that Is Isoelectronic to Neutral Aminoborylene Ligands |
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| Authors: | Johannes Brand Prof. Dr. Holger Braunschweig Florian Hupp Dr. Ashwini K. Phukan Dr. Krzysztof Radacki Dr. Sakya S. Sen |
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| Affiliation: | 1. Institut für Anorganische Chemie, Julius‐Maximilians‐Universit?t Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www‐anorganik.chemie.uni‐wuerzburg.de/Braunschweig/;2. Department of Chemical Sciences, Tezpur University, Napaam 784028, Assam (India) |
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| Abstract: | The reaction of [Pt(PCy3)2] with Br2B‐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(SiMe3)}]. 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. |
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| Keywords: | 1,2‐dipolar addition boron multiple bonding platinum salt metathesis |
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