Synthesis and structural study of organic two-photon-absorbing cycloalkanone chromophores
作者:Georgii Bogdanov、John P. Tillotson、Victor N. Khrustalev、Sergei Rigin、Tatiana V. Timofeeva
DOI:10.1107/s2053229619014360
日期:2019.11.1
three organic two‐photon‐absorbing cycloalkanone chromophores 2,4‐bis[4‐(diethylamino)benzylidene]cyclobutanone, C26H32N2O (I), 2,5‐bis[4‐(diethylamino)benzylidene]cyclopentanone, C27H34N2O (II), and 2,6‐bis[4‐(diethylamino)benzylidene]cyclohexanone, C28H36N2O (III), were obtained by a reaction between 4‐(diethylamino)benzaldehyde and the corresponding cycloalkanone and were characterized by single‐crystal
三种有机的吸收两个光子的环烷酮发色团2,4-双[4-(二乙基氨基)亚苄基]环丁酮,C 26 H 32 N 2 O(I),2,5-双[4-(二乙基氨基)亚苄基]环戊酮,C 27 H 34 N 2 O(II)和2,6-二[4-(二乙氨基)亚苄基]环己酮,C 28 H 36 N 2 O(III)是通过4-(二乙氨基)苯甲醛与相应的环烷酮之间的反应获得的,并通过单晶X射线衍射研究以及密度泛函理论(DFT)量子化学计算进行了表征。该系列的分子具有三个主要片段,即中央受体(A)和两个末端供体(D 1和D 2),代表D 1 –π– A –π– D 2分子设计的实例。所有这三种化合物均以不对称单元中的两个晶体学独立分子结晶(A和B)并通过分子Et 2 N-C 6 H 4 -C = CC (= O)-C = CC 6 H 4 -NEt 2主链(弓形或线性)的构象来区分二乙氨基取代基(与分子平面同平面或反平面