Abstract
Proton coupling constant extraction (PCCE) is a novel computer method for obtaining all the proton hyperfine coupling constants in an electron spin resonance spectrum. PCCE works well on spectra which are poorly resolved, and thus appears to complement the recently developed correlation approach used for very well resolved spectra. No prior knowledge of radical structure is needed, and proton splittings are clearly discriminated from spin-1 splittings. The program consists of two parts: SEARCH, to identify the proton hyperfine splittings, and SEPARATE, to simplify the ESR spectrum. PCCE is readily programmed and run on a small laboratory computer. Copies of the BASIC subroutines are available on request.
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