Crystal structure, spectroscopic studies and conformational analyses of 5-chloro-6-nitro-2-cyclohexylmethylbenzoxazole
作者:H. Ünver、Ö. Temiz Arpacı、D. Mehmet Zengin、T. Nuri Durlu
DOI:10.1016/s0022-2860(01)00975-9
日期:2002.5
Abstract 5-Chloro-6-nitro-2-cyclohexylmethylbenzoxazole ( 1 ) (C 14 H 15 O 3 N 2 Cl) has been studied by using an elemental analysis, IR, 1 H NMR, X-ray analysis and AM1 semi-empirical quantum mechanical methods. It crystallizes in the monoclinic space group P 2 1 / c with a =8.6844(1), b =5.7169(1), c=28.8156(1) A , β =92.063(1)°, V=1429.70(3) A 3 , Z =4, D c =1.369 g cm −3 , μ( Mo K α )=0.276 mm
摘要 采用元素分析、红外光谱、 1 H 核磁共振、X 射线分析和 AM1 半经验分析方法研究了 5-氯-6-硝基-2-环己基甲基苯并恶唑 ( 1 ) (C 14 H 15 O 3 N 2 Cl)量子力学方法。它在单斜空间群 P 2 1 / c 中结晶,a =8.6844(1), b =5.7169(1), c=28.8156(1) A , β =92.063(1)°, V=1429.70(3) A 3,Z = 4,D c =1.369 g cm -3 ,μ(Mo K α )=0.276 mm -1 和F (000)=616。该结构通过直接方法求解,并针对 953 次反射精炼为 R = 0.0542 [ I >2 σ ( I )]。标题化合物不是平面的。AM1 的最小能量构象计算为 θ 1 (O1–C7–C8–C9)、θ 2 (N2–C7–C8–C9)、θ 3 (C7–C8–C9–C10) 和