Hixson Josh L, Taylor Dennis K, Ng Seik Weng, Tiekink Edward R T
Acta Crystallogr Sect E Struct Rep Online. 2012 Mar 1;68(Pt 3):o568-9. doi: 10.1107/S1600536812002784. Epub 2012 Feb 4.
In the title mol-ecule, C(24)H(32)O(10), one tert-butyl ester group is folded towards the central benzene ring while the other is directed away. The acetyl group is almost perpendicular to the benzene ring to which it is connected [C-C-O-C torsion angle = 90.4 (12)°]. The conformation about the ethene bond [1.313 (7) Å] is E. The atoms of the benzene ring and its attached ester group and part of the hy-droxy tert-butyl ester side chain are disordered over two sets of sites in a 50:50 ratio. Linear supra-molecular chains along the a axis mediated by hy-droxy-carbonyl O-H⋯O hydrogen bonds feature in the crystal packing. The same H atom also partakes in an intra-molecular O-H⋯O inter-action.
在标题分子C₂₄H₃₂O₁₀中，一个叔丁酯基团朝向中心苯环折叠，而另一个则背向苯环。乙酰基几乎垂直于与其相连的苯环[C-C-O-C扭转角 = 90.4 (12)°]。乙烯键[1.313 (7) Å]的构象为E型。苯环及其连接的酯基以及部分羟基叔丁酯侧链的原子在两组位置上以50:50的比例无序分布。晶体堆积中存在沿a轴由羟基 - 羰基O-H⋯O氢键介导的线性超分子链。同一个H原子还参与了分子内的O-H⋯O相互作用。
