Sandwich-type heteroleptic opposite-(diazaporphyrinato)cerium complexes: Synthesis, spectroscopy, structure, and electrochemistry

Na Pan, Yongzhong Bian, Masaki Yokoyama, Renjie Li, Takamitsu Fukuda, Saburo Neya, Jianzhuang Jiang, Nagao Kobayashi

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Two sandwich-type heteroleptic tetrapyrrole cerium complexes, Ce 2(dap)2(pc) (1) [dap = 2,8,12,18-tetraethyl-3,7-13,17- tetramethyl-5,15-diazaporphyrinate; pc = phthalocyaninate] and Ce(dap)(oep) (2) (oep = octaethylporphyrinate), were prepared by a one-pot reaction of [Ce(acac)3]·nH2O (acac = acetylacetonate), metal-free diazaporphyrin H2dap, and Li2pc or H 2oep in refluxing 1,2,4-trichlorobenzene. These sandwich double- and triple-decker complexes were characterized by a wide range of spectroscopic methods in addition to elemental analysis. Their electrochemistry was also studied by cyclic voltammetry and differential pulse voltammetry. The molecular structure of Ce2(dap)2(pc) (1) was determined by X-ray diffraction analysis, indicating an unexpected asymmetrical disposition of the ligands, with two adjacent dap moieties and one outer pc ring.

Original languageEnglish
Pages (from-to)5519-5523
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number35
DOIs
Publication statusPublished - 2008 Dec 1

Keywords

  • Cyclic voltammetry
  • Phthalocyanines
  • Porphyrins
  • Sandwich complexes

ASJC Scopus subject areas

  • Inorganic Chemistry

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