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标题化合物进行了X—射线分析。该化合物晶体属正交晶系,Pbcm空间群,a=10.984(3),b=11.808(3),c=17.224(4)A,Z=8。1035个Ⅰ≥2σ(Ⅰ)的反射数据用于结构确定和修正,最终R=0.059。噻吩基平面与羰基平面的二面角略小于苯乙烯基平面与羰基平面的二面角,表明噻吩基与羰基的共轭倾向比苯乙烯基与羰基的略强,或者近乎相当。这一结果支持了噻吩基的端基当量为3的观点。
The title compound was subjected to X-ray analysis. The crystal of this compound belongs to the orthorhombic system. The Pbcm space group has a = 10.984 (3), b = 11.808 (3), c = 17.224 (4) A, Z = 8.1035 I≥2σ (Ⅰ) For structure determination and correction, final R = 0.059. The dihedral angle between the thiophene plane and the carbonyl plane is slightly smaller than the dihedral angle between the styryl plane and the carbonyl plane, indicating that the conjugation tendency between the thienyl group and the carbonyl group is slightly stronger than that of the styryl group and the carbonyl group, or nearly the same. This result supports the viewpoint that the end group equivalent of thienyl group is three.