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標題: Metal complexes of 2-aza-2-benzyl-5,10,15,20-tetraphenyl-21-carbaporphyrin: M(2-NCH2C6H5NCTPP) (M = Ni2+, Pd2+) and Mn(2-NCH2C6H5NCTPP)Br (NCTPP = N-confused 5,10,15,20-tetraphenyl porphyrinate)
作者: Hsaio, D.Z.
Chen, J.H.
Wang, S.S.
Tung, J.Y.
關鍵字: X-ray diffraction;Manganese(III) N-confused porphyrin;Palladium(II);N-confused porphyrin;SQUID;epr-spectra;manganese(iii);states
Project: Polyhedron
期刊/報告no:: Polyhedron, Volume 31, Issue 1, Page(s) 339-344.
The crystal structures of (2-aza-2-benzyl-5,10,15,20-tetraphenyl-21-carbaporphyrinato-N,N',N '') nickel( II) methylene chloride solvate [Ni(2-NCH2C6H5NCTPP); 4], (2-aza-2-benzyl-5,10,15,20-tetraphenyl-21-carbaporphyrinato-N,N',N '') palladium(II) [Pd(2-NCH2C6H5NCTPP); 5] and bromo(2-aza-2-benzyl-5,10,15,20-tetraphenyl-21-carbaporphyrinato-N,N',N '') manganese(III) toluene solvate [Mn(2-NCH2C6H5NCTPP) Br center dot C6H5CH3; 3 center dot C6H5CH3] have been established. The coordination sphere around the Ni2+ ion in 4 (or Pd2+ ion in 5) is distorted square planar (DSP), whereas for Mn3+ in 3 center dot C6H5CH3, it is a square-based pyramid with the Br atom lying in the axial site. The g value of 11.34, measured from parallel polarization of the X-band EPR spectra at 4K, is consistent with a high spin mononuclear manganese(III) centre (S = 2) in 3. The magnitude of the axial (D) zero-field splitting (ZFS) for the mononuclear Mn(III) centre in 3 was determined approximately to be 1.4 cm(-1) by paramagnetic susceptibility measurements and conventional EPR spectroscopy. (C) 2011 Elsevier Ltd. All rights reserved.
ISSN: 0277-5387
DOI: 10.1016/j.poly.2011.09.034
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