CJCU

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (8): 1103.

• Articles • Previous Articles     Next Articles

Studies on the Surface-Enhanced Raman Spectra of meso-Tetrakis (4-N-methoxycarbonyl methyl pyridyl)porphyrin and Its Nickel Complexes

HE Ji-Ping1, ZHOU Xiang2, WU Xuan-Jie2, CHEN Zhang-Ping2   

  1. 1. Center of Research and Analysis of Materials, Wuhan University of Technology, Wuhan, 430070;
    2. Department of Chemistry, Wuhan University, Wuhan
  • Received:1992-07-01 Revised:1993-02-10 Online:1993-08-24 Published:1993-08-24

PDF (PC)

Abstract: The surface-enhanced Raman spectra (SERS) and resonance Raman spectra (RRS) of Ni( Ⅱ)TrNEAMsPyP(4) were measured and compared with the Raman spectra of Ni( Ⅱ )TMPyP (4).Band assignments are made by analogy to those for Ni( Ⅱ )TMPyP.pH-dependent spectra of Ni( Ⅱ )TrNEAMsPyP(4) and H2TrNEAMsPyP(4)+ are presented.It has been found that the neutral aqueous solution of Ni complexes contains 4-coordinate Ni( Ⅱ )TrNEAMsPyP(4) and 6-coordinate Ni( Ⅱ )TrNEAMsPyP(4)(H2O)2. In acid solution, we assign the structure as the diaquo complexes or cat ionic complexes Ni( Ⅱ )TrNEAMsPyP(4)+ and show the transition from diaquo to hydroxy monomer/μ-Odimer complexes in the slightly alkaline solution.At pH 14.0 a second equilibrium process was observed, leading to dihydroxy complex.

Key words: Meso-tetrakis(4-N-methoxycarbonyl methyl pyridyDporphyrin nickel complex, Surface-enhanced Raman spectra, Resonance Raman spectra

TrendMD: