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High-spin and low-spin iron(II) complexes with facially-coordinated borohydride ligands

Mark P Mehn1, Steven D Brown, Tapan K Paine

  • 1Department of Chemistry, Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Dalton Transactions (Cambridge, England : 2003)
|March 1, 2006
PubMed

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When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
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Crystal Field Theory
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