Javier Bardem as Raoul Silva in Skyfall
This ‘Substances’ will improve your knowledge of complex ions.
Hydrogen cyanide was first characterised by the Swedish chemist Carl Wilhelm Scheele in 1782. It was isolated from one of the first synthetic dyes, Prussian blue (see p. 34), which is featured in many famous paintings, particularly Hokusai’s The Great Wave off Kanagawa (see p. 12). It is also an important treatment for heavy metal and radiation poisoning, using its complex ion [Fe4[Fe(CN)6]3] through its tendency to exchange metal ions (Box 1).
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