Additions and corrections

Electron acceptors of the fluorene series. Part 6. Synthesis of 4,5-dinitro-9-X-fluorene-2,7-disulfonic acid derivatives, their charge transfer complexes with anthracene and sensitization of photoconductivity of poly-N-(2,3-epoxypropyl)carbazole

Dmitrii D. Mysyk, Igor F. Perepichka and Nikolai I. Sokolov

J. Chem. Soc., Perkin Trans. 2, 1997, 537

On p. 540, equation (3) is incorrect. The correct equation is shown below:

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