SOLUTION PARAMAGNETIC RESONANCE STUDIES OF PARA-SUBSTITUTED HYDRAZYL FREE RADICALS

Journal Article · Mon May 01 04:00:00 EDT 1961 · Journal of Physical Chemistry (U.S.)

DOI:https://doi.org/10.1021/j100823a003· OSTI ID:4068784

Chen, M M; Sane, K V; Walter, R I; Weil, J A

The electron spin resonance spectra of a series of 2,2-diphenyl-1- picrylhydrazyl free radicals substituted at the para positions of the phenyl rings were observed in dilute solution in benzene. Nuclear hyperfine coupling constants for interaction of the unpaired electron with the hydrazine nitrogen atoms were determined by an automatic curve-fitting procedure. In three cases, these constants were assigned to the individual nitrogen atoms by studying the N/ sup 1//sup 5/ labeled compounds. The observed variations of the Coupling constants and line widths were discussed in terms of the known effects of the various substituents on electron delocalization. (auth)

• Research Organization: Argonne National Lab., Ill.; and Haverford Coll., Haverford, Penna.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-020712
• OSTI ID: 4068784
• Journal Information: Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 65; ISSN JPCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
COUPLING
HYPERFINE STRUCTURE
INTERACTIONS
NUCLEAR MODELS
ORGANIC NITROGEN COMPOUNDS
PHENYL RADICALS
PICRYL RADICALS