Abstract
In this study, the microwave spectra of 2-, 3-, and 4-picolyamine were recorded in a pulsed supersonic jet. With the aid of Natural Bond Orbital analysis, NCIplot, and Multiwfn, the structural effects of substitution were explored and then quantified by comparing semi-experimental geometries. The conformational landscape of each molecule is dominated by Van der Waals interactions between the amino group and the pyridine ring. Spectra of 2H, 13C, and 15N were also collected and analyzed.
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