Structures and properties of novel 5,15-di[4-(5-acetylsulfanylpentyloxy) phenyl] porphyrin derivatives: Density functional theory calculations

Yifei Zhu, Dongdong Qi, Lijuan Zhang, Liang Wan, Yuexing Zhang*, Jianzhuang Jiang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Density functional theory (DFT) calculations have been carried out in order to compare the molecular structures, atomic charges, molecular orbitals, electronic absorption spectra, and infrared (IR) spectra of the metal-free 5,15 -di[4-(5-acetylsulfanylpentyloxy) phenyl]porphyrin H2[DPP(OC 5H10SCOCH3)2] (1) (DPP = 5,15-diphenylporphyrin) and its zinc complex Zn[DPP(OC5H 10SCOCH3)2] (2), which exhibit novel structures with two 5-acetylsulfanylpentyloxy side chains at the para-positions of opposite meso-attached phenyl groups. The calculated molecular structure and electronic absorption and IR spectra of 1 and 2 are consistent with the experimental results. The influences of meso-substitution, polar solvents, and central metal substitution on the structure and properties of porphyrin derivatives have been investigated by comparing the corresponding data for 1 and 2 with the help of data for the unsubstituted porphyrin derivatives, namely the metal-free porphyrin H2Por (3) and the porphyrinato-zinc compound (4). The identities of the main transitions in the electronic absorption spectra of 1 and 2 are assigned and the vibrational modes in their IR spectra are identified with the assistance of animated pictures produced based on normal coordinates. The theoretical work presented here will be helpful in increasing our understanding of the structure and spectroscopic properties, as well as substituent and solvent effects, for these novel porphyrin compounds.

Original languageEnglish (US)
Pages (from-to)2183-2192
Number of pages10
JournalScience China Chemistry
Volume53
Issue number10
DOIs
StatePublished - Oct 1 2010

Keywords

  • IR spectra
  • density functional theory (DFT)
  • electronic absorption spectra
  • porphyrin
  • substituent effect

ASJC Scopus subject areas

  • Chemistry(all)

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