Synthesis and spectroscopic characterization of piperidine/chloranil and piperidine/7,7 ',8,8 '-tetracyanoquinodimethane charge transfer complexes: X-ray crystal structure of a 7,7-dicyano-8,8-di-piperidinoquinodimethane adduct

Refat M. S., Ei-Zayat L. A., YEŞİLEL O. Z.

POLYHEDRON, vol.27, no.2, pp.475-484, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 2
  • Publication Date: 2008
  • Doi Number: 10.1016/j.poly.2007.09.025
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.475-484
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

Charge transfer reactions of piperidine with p-chloranil (CHL) and 7,7',8,8'-tetracyanoquinodimethane (TCNQ) in chloroform have produced stable complexes with the general formula [(PiP)(2)(acceptor)] with a 1:2 acceptor:donor molar ratio. Elemental analysis (CHN), electronic spectra, photometric titration, mid infrared spectra, H-1 NMR spectra and thermogravimetric analysis (TGA/DTG) were used to predict the position of the charge transfer interaction between the donating and accepting sites. The crystal structure of the Pip/TCNQ system was determined by single crystal X-ray diffraction. (c) 2007 Elsevier Ltd. All rights reserved.