Gold(I) Complexes of the Geminal Phosphinoborane t Bu2PCH2BPh2

Devin H.A. Boom, Andreas W. Ehlers, Martin Nieger, Marc Devillard, Ghenwa Bouhadir, Didier Bourissou, J. Chris Slootweg*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review


In this work, we explored the coordination properties of the geminal phosphinoborane tBu2PCH2BPh2 (2) toward different gold(I) precursors. The reaction of 2 with an equimolar amount of the sulfur-based complex (Me2S)AuCl resulted in displacement of the SMe2 ligand and formation of linear phosphine gold(I) chloride 3. Using an excess of ligand 2, bisligated complex 4 was formed and showed dynamic behavior at room temperature. Changing the gold(I) metal precursor to the phosphorus-based complex, (Ph3P)AuCl impacted the coordination behavior of ligand 2. Namely, the reaction of ligand 2 with (Ph3P)AuCl led to the heterolytic cleavage of the gold-chloride bond, which is favored over PPh3 ligand displacement. To the best of our knowledge, 2 is the first example of a P/B-ambiphilic ligand capable of cleaving the gold-chloride bond. The coordination chemistry of 2 was further analyzed by density functional theory calculations.

Original languageEnglish
Pages (from-to)3945-3951
Number of pages7
JournalACS Omega
Issue number4
Publication statusPublished - 9 Apr 2018


This work was supported by the Council for Chemical Sciences of The Netherlands Organization for Scientific Research (NWO/CW) by a VIDI grant (J.C.S.) and benefitted from interactions within the COST Action CM1205 CARISMA (Catalytic Routines for Small Molecule Activation).

FundersFunder number
Council for Chemical Sciences of The Netherlands Organization for Scientific Research
European Cooperation in Science and TechnologyCM1205


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