Does B2 Have a Sigma Molecular Orbital?

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Discussion Overview

The discussion revolves around the existence of a sigma molecular orbital in the B2 molecule, as well as the overall existence of the B2 molecule itself. Participants explore concepts related to molecular orbital theory and its application to diatomic molecules, particularly boron.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the existence of a sigma molecular orbital in the B2 molecule, noting that molecular orbital diagrams typically show two pi molecular orbitals.
  • Another participant mentions the complexity of the ordering of sigma and pi orbitals, suggesting that this is a nuanced topic.
  • A later reply confirms that the B2 molecule can exist at high temperatures, implying that its existence may depend on specific conditions.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the existence of a sigma molecular orbital in B2, and there are competing views regarding the existence of the B2 molecule itself under different conditions.

Contextual Notes

The discussion highlights the complexity of molecular orbital theory and the conditions under which B2 may exist, but does not resolve the uncertainties regarding the sigma molecular orbital's existence.

Who May Find This Useful

Individuals interested in molecular orbital theory, particularly in the context of diatomic molecules and the behavior of boron in different conditions.

Karan Punjabi
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Guys I studied Molecular orbital theory based on wave mechanics in lower level as i don't know what is wave mechanics so i saw molecular orbital diagram of boron di atomic molecule in which there are two pi molecular orbitals so my first question was that there must be first a sigma molecular orbital then there should be a pi molecular orbital and when i searched on B2 molecule i didn't got its existence any where. So does it exist or not?
 
Chemistry news on Phys.org
Yeah i got it...thanks for this valuable info. But do B2 molecule exist?
 
You get to a high enough temperature, yes.
 

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