کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1313092 | 975527 | 2006 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A multifrequency high-field EPR (9–285 GHz) investigation of a series of dichloride mononuclear penta-coordinated Mn(II) complexes A multifrequency high-field EPR (9–285 GHz) investigation of a series of dichloride mononuclear penta-coordinated Mn(II) complexes](/preview/png/1313092.png)
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, Me2N-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(Me2N-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.
The electronic properties of a series of five-coordinated mononuclear Mn(II) dichloro complexes have been investigated by high-field EPR. The electronic parameters have been determined for all complexes and show that the steric and electronic effects of the N-tridentate ligand do not induce appreciable variations on the zero field splitting parameters. The magnitude of D is governed by the chloride anion.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 359, Issue 5, 20 March 2006, Pages 1541–1548