Stefan Goldschmidt and DPPH

HIST 20

G. David Mendenhall, norsource2004@yahoo.com, Eastern Sources, Inc, 8 Westchester Plaza, Elmsford, NY 10523
A biographical sketch of Stefan Goldschmidt, the discoverer of the persistent radical DPPH, will be presented. The chemistry of 2,2-diphenyl-1-picrylhydrazyl, its derivatives, crystal structure, solvent complexes, and practical applications will be reviewed. A possible mode of thermal decomposition of DPPH will be suggested.