Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (06): 563-566.doi: 10.3866/PKU.WHXB20020619

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Synthesis and Properties of Polynuclear Complex of Co(Ⅱ) with 2,2’-bipyridine-1,1’-Dioxide

Fu Tie-Xiang;Cao Jun;Tang Yue-Qun;Huang Dao-Chang;Li He-Ping   

  1. Chemistry Department, Changsha University of Electric Power, Changsha 410077
  • Received:2001-11-02 Revised:2002-01-15 Published:2002-06-15
  • Contact: Fu Tie-Xiang

Abstract: A polynuclear complex was synthesized by the reaction of CoCl2 with 2,2’-bipyridine-1,1’-dioxide in DMF solution. Elemental analysis, IR, UV and molar conductivity measurements indicated the composition of the complex corresponding to the formula [Co3(bipyO2)4Cl4]Cl2.Study of the properties showed that the complex has good sensitivity and selectivity for ammonia. The output voltage of sensor produced by the complex responses non-linearly to the change of ammonia concentration in the range of 3.0×10-5~1.2×10-4 mol•L-1,but linear response was found in the range of 1.4×10-4~1.3×10-3 mol•L-1.The sensor manufactured by the complex could be used to detect and control the concentration of NH3 in production.

Key words: Synthesis, Sensor, Cobalt chloride, Polynuclear complex, 2,2’-bipyridine-1,1’-dioxide