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Synthesis and characterization of a one‐dimensional polymeric copper (II)‐tetrathioporphyrazine

Synthesis and characterization of a one‐dimensional polymeric copper (II)‐tetrathioporphyrazine The title polymer PCuS4P5 was synthesied by reaction of 2,3‐dicyano‐5,6‐dihydro‐1,4‐dithiin, pyromellitic dianhydride and urea with cuprous salt in optimized gentle method. The structure and properties of the PCuS4P5 were characterized by elemental analysis, X‐ray powder diffraction, IR, UV‐Vis, fluorescence and EPR spectra and variable‐temperature magnetic susceptibility. The polymer is black sublimable crystallite and the degree of polymerisation has been found to be n>4. The PCuS4P5 in H2SO4 exhibits intensive absorption bands at 236, 342, 656 and 767 nm and intensive fluorescence band at 410 nm or 464 nm under the excitation of the ultraviolet light of a determined wavelength at room temperature. It has been found that the polymer exhibits a weaker antiferromagnetic interaction (J=−2.1 cm−l, μaff=1.68 B.M.) with an apparent spin S<1/2 in the ground state and its conductivity σ298K is 1.01×10−5 S·cm−1 at 13.73 MPa. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chinese Journal of Chemistry Wiley

Synthesis and characterization of a one‐dimensional polymeric copper (II)‐tetrathioporphyrazine

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References (18)

Publisher
Wiley
Copyright
Copyright © 1998 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1001-604X
eISSN
1614-7065
DOI
10.1002/cjoc.19980160409
Publisher site
See Article on Publisher Site

Abstract

The title polymer PCuS4P5 was synthesied by reaction of 2,3‐dicyano‐5,6‐dihydro‐1,4‐dithiin, pyromellitic dianhydride and urea with cuprous salt in optimized gentle method. The structure and properties of the PCuS4P5 were characterized by elemental analysis, X‐ray powder diffraction, IR, UV‐Vis, fluorescence and EPR spectra and variable‐temperature magnetic susceptibility. The polymer is black sublimable crystallite and the degree of polymerisation has been found to be n>4. The PCuS4P5 in H2SO4 exhibits intensive absorption bands at 236, 342, 656 and 767 nm and intensive fluorescence band at 410 nm or 464 nm under the excitation of the ultraviolet light of a determined wavelength at room temperature. It has been found that the polymer exhibits a weaker antiferromagnetic interaction (J=−2.1 cm−l, μaff=1.68 B.M.) with an apparent spin S<1/2 in the ground state and its conductivity σ298K is 1.01×10−5 S·cm−1 at 13.73 MPa.

Journal

Chinese Journal of ChemistryWiley

Published: Jul 1, 1998

Keywords: ; ; ;

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