Spectroscopic characterization and thermal structural analysis of the charge-transfer complexes formed in the reaction of 1-methylpiperazine with σ-and π-acceptors

Amina Fakhro, Hassan S. Bazzi, Adel Mostafa, Lamis Shahada

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1 Citation (Scopus)


Charge-transfer complexes between 1-methylpiperazine (1MPIPZ) as a donor with the π-acceptors 7,7,8,8-tetracyanoquinodimethane (TCNQ), tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil = CHL) and σ-acceptor iodine (I2) have been studied spectrophotometrically in chloroform at room temperature by electronic and infrared spectra as well as elemental and thermal analysis. The obtained results indicate the formation of 1:3 M ratio for 1MPIPZ with TCNQ and TCNE, and 1:1 M ratio for 1MPIPZ with DDQ, CHL, and I 2. Based on the obtained data, the formed charge-transfer complexes were formulated as [(1MPIPZ)(TCNQ)3], [(1MPIPZ) (TCNE)3], [(1MPIPZ)(DDQ)], [(1MPIPZ)(CHL)] and [(1MPIPZ)2I]+ I3-.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalJournal of Molecular Structure
Issue number1-3
Publication statusPublished - 2 Jun 2010



  • Charge-transfer
  • CHL
  • DDQ
  • Iodine (I)
  • TCNE
  • TCNQ

ASJC Scopus subject areas

  • Spectroscopy
  • Analytical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry

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