Synthesis and electrical conductivity of some poly[4-amino-2,6-pyrimidinodi-thiocarbamate]–metal complexes

✍ Scribed by Ali El-Shekeil; Hussein Al-Maydama; Ashour Al-Karbooly

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 426 KB
• Volume: 10
• Category: Article
• ISSN: 1042-7147
• DOI: 10.1002/(sici)1099-1581(199903)10:3<146::aid-pat856>3.0.co;2-1

✦ Synopsis

Poly[4-amino-2,6-pyrimidinodithiocarbamate] was prepared from the reaction of 2-mercapto-4,6-diaminopyrimidine with carbon disulfide, followed by condensation through the removal of H 2 S gas. Five polymer±metal complexes of manganese, ferrous, ferric, zinc and mercury were then prepared. The polymer±metal complexes are investigated by elemental analyses, ultraviolet Fourier transform infrared and magnetic susceptibility. The DC electrical conductivity variation with the temperature in the region 298±498 K of the five polymer±metal complexes was determined. Doping with 5% ZnCl 2 increased the electrical conductivity of the polymer at all temperatures investigated. All the polymer±metal complexes showed an increase in conductivity with an increase in temperature, which is a typical semiconductor behavior. The proposed structure of the complexes is (MLX 2 ÁmH 2 O) n . All the polymer± metal complexes are thermally stable, are insoluble in common organic solvents and have high melting points.