目標化合物(C19H20ClNO)的結構得到x-單晶衍射證實。晶體是單斜體系,空間群為P21/n, a= 9.2365(2), b = 12.1241(3), c = 14.9960(4) Å, β = 106.589(3)°, C19H20ClNO, Mr= 313.81, Dc = 1.295 g/cm3, V = 1609.42(7) Å3, Z = 4, F(000) = 664,µ(MoKa) = 2.097 mm-1,T = 200(10) K, 觀察到2533反射點且具有2813 獨立反射點 (I > 2σ(I)), R= 0.0389,wR = 0.1057,且GOF = 1.043 (對所有數據R = 0.0423,wR = 0.1083)。3,4-二氫喹啉-2-(1H)-酮結構片段具有熱力學穩定的反式構型。熱力學分析表明化合物3的降解機理複雜。
ABSTRACT The target compound (C19H20ClNO) was structurally determined by single-crystal X-ray diffraction. The crystal is in monoclinic system, space group P21/n with a = 9.2365(2), b = 12.1241(3),c = 14.9960(4) Å, β = 106.589(3)°, C19H20ClNO,Mr = 313.81, Dc = 1.295 g/cm3, V = 1609.42(7) Å3, Z= 4, F(000) = 664,µ(MoKa) = 2.097 mm-1, T = 200(10) K, 2813 independent reflections with 2533 observed ones (I > 2σ(I)), R = 0.0389 and wR = 0.1057 with GOF =1.043 (R = 0.0423 and wR = 0.1083 for all data). The 3,4-dihydroquinolin-2(1H)-one moiety maintains thermodynamically stable trans configuration. The decomposition mechanism of compound 3 is complex by thermal analysis.
文章連結:LI Hui-Juan LUO Zai-Gang WANG Xiu-Xiu Crystal Structure and Thermal Property of 4-(3-Chlorophenyl)-3-isopropyl-1-methyl-3,4-dihydroquinolin-2(1H)-one Chinese J. Struct. Chem. 2020, 39, 913-917 DOI: 10.14102/j.cnki.0254–5861.2011-2565