Wurster salts

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Wurster salts
(selected mesomeric boundary structures )
Wurster salts

Wurster salts - general formula - (R = alkyl, H)
Wurster's red

Wurster's red
Wurster reagent

Wurster reagent

Wurster salts are brightly colored salts, named after their discoverer Casimir Wurster (1856–1913). The representatives of this group of substances arise from the partial oxidation of N -alkylated p - phenylenediamines . The Wurster salts belong structurally to the paramagnetic radical cations , which was researched by Ernst Weitz (1883–1954) and Leonor Michaelis (1875–1949).

literature

  • Ulrich Nickel: The experiment: reactions with Wurster's cations . In: Chemistry in Our Time . tape 12 , no. 3 , June 1978, p. 89 , doi : 10.1002 / ciuz.19780120305 .

Individual evidence

  1. Otto-Albrecht Neumüller (Ed.): Römpps Chemie Lexikon . 8th edition. Frank'sche Verlagshandlung, Stuttgart 1983, ISBN 3-440-04513-7 , p. 4651 .
  2. ^ F. Krollpfeiffer: About radicals and merichinoid compounds - Ernst Weitz on his 70th birthday on June 21, 1953 . In: Angewandte Chemie . tape 65 , no. June 12 , 1953, p. 313-315 , doi : 10.1002 / anie.19530651202 .
  3. ^ L. Michaelis, MP Schubert, S. Granick: The Free Radicals of the Type of Wurster's Salts . In: Journal of the American Chemical Society . tape 61 , no. 8 , August 1939, p. 1981 , doi : 10.1021 / ja01877a013 .