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  2. Tanabe–Sugano diagram - Wikipedia

    en.wikipedia.org/wiki/Tanabe–Sugano_diagram

    The diagram shows that there are three quartet excited states: 4 T 2, 4 A 2, and 4 T 1 (P). From the diagram one can predict that there are three spin-allowed transitions. However, the spectrum of [Co(H 2 O) 6] 2+ does not show three distinct peaks that correspond to the three predicted excited states. Instead, the spectrum has a broad peak ...

  3. Racah parameter - Wikipedia

    en.wikipedia.org/wiki/Racah_parameter

    The Racah parameters are a set of parameters used in atomic and molecular spectroscopy to describe the amount of total electrostatic repulsion in an atom that has multiple electrons.

  4. Electron configurations of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Electron_configurations_of...

    This page shows the electron configurations of the neutral gaseous atoms in their ground states. For each atom the subshells are given first in concise form, then with all subshells written out, followed by the number of electrons per shell.

  5. Spectroscopic notation - Wikipedia

    en.wikipedia.org/wiki/Spectroscopic_notation

    This notation is used to specify electron configurations and to create the term symbol for the electron states in a multi-electron atom. When writing a term symbol, the above scheme for a single electron's orbital quantum number is applied to the total orbital angular momentum associated to an electron state.

  6. Chromium(III) acetylacetonate - Wikipedia

    en.wikipedia.org/wiki/Chromium(III)_acetylacetonate

    The compound is prepared by the reaction of chromium(III) oxide with acetylacetone (Hacac): [3]. Cr 2 O 3 + 6 Hacac → 2 Cr(acac) 3 + 3 H 2 O. The complex has idealized D 3 symmetry.The Cr-O distances are 1.93 Å. [4]

  7. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    A diatomic molecular orbital diagram is used to understand the bonding of a diatomic molecule. MO diagrams can be used to deduce magnetic properties of a molecule and how they change with ionization. They also give insight to the bond order of the molecule, how many bonds are shared between the two atoms. [12]

  8. Spectrochemical series - Wikipedia

    en.wikipedia.org/wiki/Spectrochemical_series

    A spectrochemical series is a list of ligands ordered by ligand "strength", and a list of metal ions based on oxidation number, group and element.For a metal ion, the ligands modify the difference in energy Δ between the d orbitals, called the ligand-field splitting parameter in ligand field theory, or the crystal-field splitting parameter in crystal field theory.

  9. Trigonal prismatic molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Trigonal_prismatic...

    In d 0 complexes it may be ascribed to sd 5 hybridization, but in d 1 and d 2 complexes the d z 2 orbital is occupied by nonbonding electron (pair). Furthermore, when unoccupied, said orbital participates in bonding and causes C 3v distortion, like in W(CH 3 ) 6 .