The crystal structures of three different phosphine oxides derivatives possessing high quadratic susceptibilities, β, in solution have been investigated by X-ray diffraction. Slight modification of the transmitter chain leads to an acentric molecule; however, it is shown that these polar molecules have specific arrangements in the crystalline state, leading to a weak non-linear optical (NLO) response. The crystallographic data were entered into the MOPAC program to calculate the quadratic hyperpolarizability of each structure. The results were compared to those obtained by the use of standard internal data of the MOPAC program.
X 射线衍射研究了三种不同的膦氧化物衍
生物的晶体结构,这些衍
生物在溶液中具有较高的二次方电感β。对发射链的微小改动会导致分子偏心;然而,研究表明,这些极性分子在结晶状态下具有特定的排列方式,从而导致微弱的非线性光学(NLO)响应。晶体学数据被输入
MOPAC 程序,以计算每种结构的二次超极化率。计算结果与使用
MOPAC 程序标准内部数据得出的结果进行了比较。