Spin-state ordering in hydroxo-bridged Diiron(III)bisporphyrin complexes
We report the synthesis, structure, and spectroscopic characterization of 1,2-bis[μ-hydroxo iron(III) 5-(2,3,7,8,12,13,17,18-octaethylporphyrinyl)]ethane with PF6- and SbF6- counteranions. The two iron centers are nonequivalent with admixed intermediate spin state (S = 3/2 with a minor contribution...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 22, 2015
|
| In: |
Inorganic chemistry
Year: 2015, Volume: 54, Issue: 4, Pages: 1919-1930 |
| ISSN: | 1520-510X |
| DOI: | 10.1021/ic502803b |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/ic502803b
|
| Author Notes: | Mala A. Sainna, Debangsu Sil, Dipankar Sahoo, Bodo Martin, Sankar Prasad Rath, Peter Comba, and Sam P. de Visser |
| Summary: | We report the synthesis, structure, and spectroscopic characterization of 1,2-bis[μ-hydroxo iron(III) 5-(2,3,7,8,12,13,17,18-octaethylporphyrinyl)]ethane with PF6- and SbF6- counteranions. The two iron centers are nonequivalent with admixed intermediate spin state (S = 3/2 with a minor contribution of S = 5/2) on each metal both in the solid and in solution. The molecules are compared with previously known μ-hydroxo complexes with other counterions, such as I3-, BF4-, and ClO4-, which demonstrates that the nature of the counterion can affect the spin-state ordering dramatically. To understand how the spin-state ordering is affected by external perturbations, we also have done a comprehensive computational study. The calculations show that subtle environmental perturbations affect the spin-state ordering and relative energies and are likely to be the root cause of the variation in spin-state ordering observed experimentally. |
|---|---|
| Item Description: | Gesehen am 09.07.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1520-510X |
| DOI: | 10.1021/ic502803b |