Nargis Jamila, Wong Keng-Chong, Khairuddin Melati, Chantrapromma Suchada, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):o2717-8. doi: 10.1107/S1600536811037913. Epub 2011 Sep 30.
The title benzophenone compound, C(14)H(12)O(6)·H(2)O, was isolated from the bark of Garcinia hombroniana Pierre (Guttiferae). The mol-ecule is twisted, the dihedral angle between the two benzene rings being 59.13 (7)°. The meth-oxy group is approximately coplanar with the attached benzene ring, with a C-O-C-C torsion angle of 1.91 (18)°. The water mol-ecule is disordered over two positions in a 0.555 (19):0.445 (19) ratio. An intra-molecular O-H⋯O hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds. These inter-actions link the mol-ecules into sheets parallel to the ac plane. The sheets are stacked along the b axis by π-π inter-actions, with centroid-centroid distances of 3.6219 (7) Å. A weak O-H⋯π inter-action was also noted.
标题化合物二苯甲酮，化学式为C(14)H(12)O(6)·H(2)O，是从山竹子（藤黄科）的树皮中分离得到的。分子呈扭曲状，两个苯环之间的二面角为59.13 (7)°。甲氧基与相连的苯环大致共面，C-O-C-C扭转角为1.91 (18)°。水分子在两个位置上无序分布，比例为0.555 (19):0.445 (19)。分子内的O-H⋯O氢键形成了一个S(6)环 motif。晶体结构通过分子间的O-H⋯O氢键得以稳定。这些相互作用将分子连接成平行于ac平面的片层。片层沿着b轴通过π-π相互作用堆叠，质心间距为3.6219 (7) Å。还观察到了一种弱的O-H⋯π相互作用。
