Abstract
The electronic structure of a series of 11 penta-coordinated dichloride mononuclear Mn(II) complexes [Mn(L)Cl2] (L = Cl-terpy, Br-terpy, OH-terpy, phenyl-terpy, tolyl-terpy, mesityl-terpy, EtO-terpy, Me 2N-terpy, tBu3-terpy, py-phen, and dpya) has been investigated by a multifrequency EPR study (9-285 GHz). The X-ray structures of [Mn(Br-terpy)Cl2], [Mn(EtO-terpy)Cl2], [Mn(Me 2N-terpy)Cl2] and [Mn(tolyl-terpy)Cl2] are described. The spin Hamiltonian parameters have been determined for all complexes and show that the steric and electronic effects of the N-tridentate ligand L do not induce appreciable variations on the zero field splitting parameters. The magnitude of D, close to 0.3 cm-1, is governed by the chloride anion. High-field EPR spectroscopy allows the determination of electronic parameters of mononuclear Mn(II) complexes characterized by relatively large magnitudes of D and the unambiguous interpretation of the X-band spectra of these kinds of complexes.
Original language | English |
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Pages (from-to) | 1541-1548 |
Number of pages | 8 |
Journal | Inorganica Chimica Acta |
Volume | 359 |
Issue number | 5 |
DOIs | |
Publication status | Published - Mar 20 2006 |
Keywords
- Electronic properties
- High field EPR
- Mononuclear dichloro-manganese(II) complex
- Multifrequency EPR spectroscopy
- N-Tridentate ligand
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry