The title compound, C20H17NO, crystallizes in the orthorhombic P212121 space group with unit cell parameters a = 7.6903(7) Å, b = 18.979(2) Å, c = 19.753(2) Å, with two crystallographically independent molecules in the asymmetric unit, which differ from one another in the slight rotation of the phenyl ring; this allows the formation of three internal hydrogen bonds, two of the type C–H···N and one of the type C–H···O, in one of the molecules, in contrast with only two of the type C–H···N in the other. The compound is rich in aromatic π rings and therefore the crystal packing is entirely dominated by cohesive weak C–H···π interactions among neighboring molecules producing an efficient packing with 71.2% of occupied space. The molecules of the title compound, C20H17NO, are joined by C–H···N and C–H···O hydrogen bonds. The compound is rich in aromatic π rings and therefore the crystal packing is entirely dominated by cohesive weak C–H···π interactions among neighboring molecules producing an efficient packing with 71.2% of occupied space.
标题化合物
C20H17NO 在正交 P212121 空间群中结晶,其单胞参数为 a = 7.6903(7) 埃,b = 18.979(2) 埃,c = 19.753(2) 埃。753(2) 埃,在不对称单元中有两个晶体学上独立的分子,它们之间的区别在于苯环的轻微旋转;这使得其中一个分子中形成了三个内部氢键,两个为 C-H-N 型,一个为 C-H-O 型,而另一个分子中只有两个 C-H-N 型。该化合物富含芳香π环,因此晶体的堆积完全由相邻分子间内聚的弱 C-H---π 相互作用所主导,从而产生了有效的堆积,占据了 71.2% 的空间。标题化合物 的分子通过 C-H-N 和 C-H-O 氢键连接。该化合物富含芳香 π 环,因此晶体堆积完全由相邻分子间内聚的弱 C-H---π 相互作用所主导,从而产生了有效堆积,占据了 71.2% 的空间。