Copper thiosemicarbazide complexes

Copper-thiosemicarbazide complexes interact with both the bases and the phosphate groups of native caf/thymus DNA (Pillai et al. 1977). 

Polymeric poly (thiosemicarbazide) copper (II) complexes have been made and are being evaluated as algicides and molluscicides. This endeavor showed considerable promise in the laboratory and slow release data for copper (II) indicate that reusable cartridge type copper (II) systems for schisto-somaisls and algae control may be feasible. 

EDTA (ethylenediaminetetraacetic acid) forms stable metal chelates with a number of metal ions. Using this reagent as a complexing- agent, arsenic, bismuth, and selenium can be determined without any interference in the presence of nickel and cobalt. The cobalt-EDTA chelate is stable in 5 M HCl solution, whereas the corresponding bismuth complex is not. The influence of copper on the determination of arsenic can also be eliminated with EDTA, but not in the determination of selenium. Thiourea has been used to eliminate the influence of copper in the determination of antimony and sodium oxalate to eliminate the influence of copper and nickel in the determination of tin. An addition of thiosemicarbazide and 1,10-phenanthro-line reduces the interference of copper, nickel, platinum, and palladium in the determination of arsenic. 

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