MICROWAVE SPECTRUM AND CONFORMATION OF METHOXYAMINE
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Date
1974
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Publisher
Ohio State University
Abstract
The microwave spectra of three isotopic species of methoxyamine ($CH_{3}$O$NH_{2}$) have been studied. For the normal species the ground-state rotational constants are A = 42 488 $\pm$ 150 MHz, B = 10 049.59 $\pm$ 0.03 MHz, and C = 8962.85 $\pm$ 0.03 MHz. From these data and those from the -NHD and -$ND_{2}$ species, the amino protons have been shown to occupy a symmetrical trans position relative to the methyl group. The barrier to internal rotation of the methyl group has been found to be 873 $\pm$ $15 cm^{-1}$ by analysis of ground state splittings. Analysis of hyperfine splittings has yielded the $^{14} N$ quodrupole coupling constants, which have the following values for the normal isotopic species: $\chi_{aa}$ = 3.63 $\pm$ 0.03 MHz, $\chi_{bb}$ = - 3.69 $\pm$ 0.07 MHz and $\chi_{cc}$= 0.06 $\pm$ 0.07 MHz.
Description
Author Institution: Department of Chemistry, University of Kansas