%0 Journal Article %T IR spectra and structure of chromenopyridine carbonitrile systems %A Ivlieva (Peretokina), I.V. %A Mecheryakova, A.A. %A Babkov, L.M. %A Sorokin, V.V. %K 5-amino-2,4-diimino-3-(pyridine-2-yl)-2,3,4,10b-tetrahydro-1H-chromeno[3,4-c]pyridine-1-carbonitrile, 4-amino-2,5-diimino-3-(pyridine-2-yl)-2,3,5,10b-tetrahydro-1-chromeno[3,4-c]pyridine-1-carbonitrile, chromedopyridine carbonitrile systems, geometrical structure, IR spectrum %J Russian Journal of Biological Physics and Chemisrty %D 2021 %N 6 %P 6 %I Federal State Educational Institution of Higher Education Sevastopol State University