Boranediyl‐ and Diborane(4)‐1, 2‐diyl‐Bridged Platinum A‐Frame Complexes. Issue 39 (17th June 2020)

• Record Type: Journal Article
• Authors: Brunecker, Carina; Müssig, Jonas H.; Arrowsmith, Merle; Fantuzzi, Felipe; Stoy, Andreas; Böhnke, Julian; Hofmann, Alexander; Bertermann, Rüdiger; Engels, Bernd; Braunschweig, Holger
• Is Part Of: Chemistry. Volume 26:Issue 39(2020)
• Page Start: 8518
• Page End: 8523
• Publication Date: 2020-06-17
• Subjects: boron -- bonding -- EDA-NOCV -- oxidative addition -- platinum; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001168
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Diplatinum A‐frame complexes with a bridging (di)boron unit in the apex position were synthesized in a single step by the double oxidative addition of dihalo(di)borane precursors at a bis(diphosphine)‐bridged Pt 0 2 complex. While structurally analogous to well‐known μ‐ borylene complexes, in which delocalized dative three‐center‐two‐electron M‐B‐M bonding prevails, theoretical investigations into the nature of Pt−B bonding in these A‐frame complexes show them to be rare dimetalla(di)boranes displaying two electron‐sharing Pt−B σ‐bonds. This is experimentally reflected in the low kinetic stability of these compounds, which are prone to loss of the (di)boron bridgehead unit. Abstract : (Di)boron‐bridged platinum A‐frame complexes were synthesized by the twofold oxidative addition of dihalo(di)boranes to a bis(diphosphine)‐bridged diplatinum(0) precursor. Experimental and theoretical studies show that these compounds are rare (di)boranediyl complexes with electron‐sharing Pt−B bonds.