作者:Bernardo A. Nogueira、Maria Carvalho、José A. Paixão、M. Ermelinda S. Eusébio、Susana M. M. Lopes、Teresa M. V. D. Pinho e Melo、Rui Fausto
DOI:10.1039/d1ce01601f
日期:——
of two of the polymorphs were solved by single-crystal X-ray diffraction crystallography: polymorph 1 (burgundy) is monoclinic (P21/n; a = 5.3354(2) Å, b = 14.2344(4) Å, c = 17.1709(6) Å, β = 96.567(2)°, Z = 4, Z′ = 1), and polymorph 2 (orange) is monoclinic (P21/c; a = 25.451(3) Å, b = 14.4966(14) Å, c = 7.1113(7) Å, β = 95.795(6)°, Z = 8, Z′ = 2). It was not possible to determine the crystal structure
主要 ROY 化合物 5-乙酰基-2-((2-硝基苯基)氨基)噻吩-3-甲腈 (AcROY) 的新型衍生物通过 1-氟之间的亲核芳族取代反应分两步合成-2-硝基苯和 2-氨基噻吩-3-甲腈,然后在噻吩环的 5 位进行傅克酰化。对化合物(分离分子)的构象空间进行了计算研究,得到了 4 个低能分子内氢键构象异构体。该化合物表现出颜色多态性,鉴定出 3 种不同的多态性。两种多晶型的晶体结构通过单晶 X 射线衍射晶体学求解:多晶型1(酒红色)为单斜晶系(P 2 1 / n; a = 5.3354(2) Å, b = 14.2344(4) Å, c = 17.1709(6) Å, β = 96.567(2)°, Z = 4, Z ' = 1),多晶型物2(橙色)是单斜晶( P 2 1 / c ; a = 25.451(3) Å, b = 14.4966(14) Å, c = 7.1113(7) Å,