Crystal structures of three homologues with increasing ring size: 2-meth-oxy-4-(thio-phen-2-yl)-5,6,7,8-tetra-hydro-quinoline-3-carbo-nitrile, 2-meth-oxy-4-(thio-phen-2-yl)-6,7,8,9-tetra-hydro-5 H-cyclo-hepta-[ b]pyridine-3-carbo-nitrile and 2-meth-oxy-4-(thio-phen-2-yl)-5,6,7,8,9,10-hexa-hydrocyclo-octa[ b]pyridine-3-carbo-nitrile
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The title compounds, C15H14N2OS (1a), C16H16N2OS (1b), and C17H18N2OS (1c), form a homologous series in which the size of the saturated ring increases from six- to eight-membered (with four, five and six methyl-ene groups respectively). For 1b and 1c, the cent... ...
