Synthesis of Nickel(II) Phthalocyanine

To a reflux apparatus add a mixture of 14.8 g of phthalic anhydride, 60.1 g of urea, 50 mg of ammonium molybdate and 6.6 g of nickel(II) sulfate hexahydrate and heat in 180-200°C for 5 h with stirring. Cool the solution down and boil the mixture with 200 mL of 10 % HCl for 2 h in a reflux apparatus. Filter the mixture and reflux the dark powder with 200 mL of 2 N sodium hydroxide for 2 h, filter and wash the mixture. Then reflux the powder again with the HCl and filter, wash with water and dry the powder.

Source

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The powdered mixture

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Heating the mixture

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The filtered and washed product

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