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Title: Organic solid state reactivity-Reaction between a-naphthol and 1,4-naphthoquinone
Authors: Singh, N B
Singh, N P
Issue Date: Aug-1992
Publisher: NISCAIR-CSIR, India
Abstract: a-Naphthol reacts with 1,4-naphthoquinone to form a 1 : 1 weak molecular complex in solid as well as in solution state. The UV and visible spectroscopic studies do not show any new band indicating g that either charge-transfer interaction is absent or the complex is dissociated in solution. The infrared and NMR spectroscopic studies show that the oxygen atom of C = O group of 1,4-naphthouinone is hydrogen bonded with H atom of OH group of a-naphthol. Kinetic studies of the solid is the reaction in capillary show that the kinetic data obey the equation, ζ = ktn and the energy of activation is found to be 28.7 kJ/mol. This suggests that the diffusion might be taking place through surface migration. Reactions of 1,4-naphthoquinone vapours at the surface of a-naphthol single crystal have shown that the solid state reaction is nucleation controlled process and the reaction s at the point of defect or strain at the surface of the single crystal of a-naphthol.
Page(s): 608-611
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.31A(08) [August 1992]

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