Direct detection of mercury(II)–thio-ether bonding in complexes of methionine and S-methylcysteine by 1H nuclear magnetic resonance
Abstract
Mercury(II) bonds to the sulphur atom of methionine and S-methylcysteine in 1M-HNO3; at pH 9 N,O–metal bonding is favoured in complexes between methionine and mercury(II), whereas N,S–metal bonding occurs for S-methylcysteine.