Filtern
Volltext vorhanden
- ja (2)
Gehört zur Bibliographie
- ja (2)
Erscheinungsjahr
- 2020 (2) (entfernen)
Dokumenttyp
Sprache
- Englisch (2)
Schlagworte
- Boron (1)
- Borylene (1)
- EDA-NOCV (1)
- Heterocycles (1)
- Main-group chemistry (1)
- bonding (1)
- boron (1)
- oxidative addition (1)
- platinum (1)
Institut
EU-Projektnummer / Contract (GA) number
- 669054 (1)
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.
2,2′-Bipyridyl is shown to spontaneously abstract a borylene fragment (R–B:) from various hypovalent boron compounds. This process is a redox reaction in which the bipyridine is reduced and becomes a dianionic substituent bound to boron through its two nitrogen atoms. Various transition metal–borylene complexes and diboranes, as a well as a diborene, take part in this reaction. In the latter case, our results show an intriguing example of the homolytic cleavage of a B═B double bond.