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Boron-lead multiple bonds in the PbB2O– and PbB3O2– clusters.
- Source :
- Communications Chemistry; 3/3/2022, Vol. 5 Issue 1, p1-7, 7p
- Publication Year :
- 2022
-
Abstract
- Despite its electron deficiency, boron can form multiple bonds with a variety of elements. However, multiple bonds between boron and main-group metal elements are relatively rare. Here we report the observation of boron-lead multiple bonds in PbB<subscript>2</subscript>O<superscript>–</superscript> and PbB<subscript>3</subscript>O<subscript>2</subscript><superscript>–</superscript>, which are produced and characterized in a cluster beam. PbB<subscript>2</subscript>O<superscript>–</superscript> is found to have an open-shell linear structure, in which the bond order of B☱Pb is 2.5, while the closed-shell [Pb≡B–B≡O]<superscript>2–</superscript> contains a B≡Pb triple bond. PbB<subscript>3</subscript>O<subscript>2</subscript><superscript>–</superscript> is shown to have a Y-shaped structure with a terminal B = Pb double bond coordinated by two boronyl ligands. Comparison between [Pb≡B–B≡O]<superscript>2–</superscript>/[Pb=B(B≡O)<subscript>2</subscript>]<superscript>–</superscript> and the isoelectronic [Pb≡B–C≡O]<superscript>–</superscript>/[Pb=B(C≡O)<subscript>2</subscript>]<superscript>+</superscript> carbonyl counterparts further reveals transition-metal-like behaviors for the central B atoms. Additional theoretical studies show that Ge and Sn can form similar boron species as Pb, suggesting the possibilities to synthesize new compounds containing multiple boron bonds with heavy group-14 elements. Despite its electron deficiency, boron can form multiple bonds with a variety of elements, but such bonds between boron and main-group metal elements are relatively rare. Here, the authors characterize boron–lead multiple bonds in PbB<subscript>2</subscript>O<superscript>-</superscript> and PbB<subscript>3</subscript>O<subscript>2</subscript><superscript>-</superscript> produced by laser vaporization. [ABSTRACT FROM AUTHOR]
- Subjects :
- COORDINATE covalent bond
HEAVY elements
DOUBLE bonds
BORON
Subjects
Details
- Language :
- English
- ISSN :
- 23993669
- Volume :
- 5
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Communications Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 156318473
- Full Text :
- https://doi.org/10.1038/s42004-022-00643-1