Picrate

A picrate is a salt containing the anion (O₂N)₃C₆H₂O⁻ or an ester derivative of the picrate anion. These salts are often produced by reactions of picric acid (2,4,6-trinitrophenol).^[1]^[2] The picrate ion is intensely yellow, although many of its salts are brown or orange-red.

^ Olsher, Uriel; Feinberg, Hadar; Frolow, Felix; Shoham, Gil (1996). "The picrate anion as a versatile chelating counterion for the complexation of alkali and alkaline earth metal cations with ionophores: 'the picrate effect'". Pure and Applied Chemistry. 68 (6): 1195–1199. doi:10.1351/pac199668061195. S2CID 96529554.
^ Smith, M. B.; March, J. (2007). March's Advanced Organic Chemistry (6th ed.). John Wiley & Sons. p. 118. ISBN 978-0-471-72091-1.

[1] Olsher, Uriel; Feinberg, Hadar; Frolow, Felix; Shoham, Gil (1996). "The picrate anion as a versatile chelating counterion for the complexation of alkali and alkaline earth metal cations with ionophores: 'the picrate effect'". Pure and Applied Chemistry. 68 (6): 1195–1199. doi:10.1351/pac199668061195. S2CID 96529554.

[March-2] Smith, M. B.; March, J. (2007). March's Advanced Organic Chemistry (6th ed.). John Wiley & Sons. p. 118. ISBN 978-0-471-72091-1.

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