Copper tetrammine sulfate

Manganous acetylacetonate Manganic acetylacetonate Ferrous acetylacetonate Ferric acetylacetonate Cobaltic acetylacetonate Rhodium chloride Nickel acetylacetonate Potassium platinous chloride Tetrammine copper (II) sulfate Potassium gold cyanide... 

Later investigations by Terenyi (1931) showed that a potent seed dressing is formed when dilute, 0.2% copper sulfate solution reacts with 0.09% potassium mercury(II) chloride, inactive itself. He presumed that a complex compound is formed by the interaction of the two compounds which, like copper(II)tetrammine sulfate, was able to penetrate the fungal cell membrane. 

Prepare a small ion exchange column using 10 cm of SAC resin. H or Na form). The resin is converted to the ammonium form by pas.sing 2 BV of 2 N ammonium sulfate solution slowly through the bed followed by a rin.se with deionized water. Two bed-volumes of ammoniacal copper sulfate solution (0.25 M CUSO4/2.5 M NH OH) is passed through the column which converts the resin to the intense blue copper(ll) tetrammine form, R.) Cu(NHi)4 The resin is rinsed and stored in a tightly stoppered bottle. 

---