Spectroscopic Studies Of Π-backdonating Early Transition Metal And Monovalent Lanthanide Diborides

Merriles, Dakota M.

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https://hdl.handle.net/2142/116913 Copy

Description

Title

Spectroscopic Studies Of Π-backdonating Early Transition Metal And Monovalent Lanthanide Diborides

Author(s)

Merriles, Dakota M.

Contributor(s)

• Morse, Michael D.
• Nielson, Christopher
• Tomchak, Kimberly H.

Issue Date

2022-06-21

Keyword(s)

Photodissociation and photochemistry

Abstract

The second period p-block elements reign as mainstays in a plethora of scientific disciplines due to their varied chemical bonding and significant natural abundance. Indeed, the range of chemistries of these p-block elements is profoundly expanded when these atoms, particularly electron deficient boron, bond with transition metals and lanthanides. Exotic metallaboron compounds have been demonstrated to participate in a wide array of bonding schemes, mechanisms, and geometries. Here, resonant two-photon ionization spectroscopy and ab initio quantum chemical calculations are used to elucidate the chemical bonding and electronic structure of triatomic metal diboride complexes. These previously unstudied species are demonstrated to require an extension of the Dewar-Chatt-Duncanson bonding model of organometallic chemistry. Instead of weakening the bond in the diboron ligand via backdonation into the pi* antibonding orbital, the metal-boron and boron-boron bonds are strengthened by backdonation into the pi bonding orbital of diboron. Moreover, it is shown that the lanthanide atoms in these species exhibit a rare +1 oxidation state, further defining this family of molecules as a special class of monovalent lanthanide compounds.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Handle URL

https://hdl.handle.net/2142/116913&&

DOI

https://doi.org/10.15278/isms.2022.TJ05

Copyright and License Information

Copyright 2022 held by the authors

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