(4-Methoxyphenyl)diphenylmethanol, an Unusual Tetramer Containing a<i>D</i>[<i>R</i>] Pattern of Hydrogen Bonds, and Tris(2-methoxyphenyl)methanol
作者:I. L. J. Patterson、C. Glidewell、G. Ferguson
DOI:10.1107/s0108270198009329
日期:1998.12.15
(4-Methoxyphenyl)diphenylmethanol (C20H18O2) crystallizes with two independent molecules; the molecules are linked by O-H . . . O hydrogen bonds into centrosymmetric tetramers in which two molecules form a cyclic R-2(2)(16) motif from which the other two are pendant, giving a D-3(3)(11)[R-2(2)(16)] pattern. In tris(2-methoxyphenyl)methanol (C22H22O4) the hydroxy H atoms are disordered over two sites; whichever sire is occupied, an intramolecular O-H. . .O hydrogen bond is formed with a methoxy O atom.
(4-甲氧基苯基)二苯基甲醇 (C20H18O2) 以两个独立的分子 crystallizes, 分子通过 O-H...O 氢键连接形成对称四聚体 (centrosymmetric tetramers), 其中两个分子形成一个环状的 R-2(2)(16) 基元, 其他两个分子则悬挂在环之外, 形成 D-3(3)(11)[R-2(2)(16)] 的结构模式。在三(2-甲氧基苯基)甲醇 (C22H22O4) 中, 羟基 H 原子在两个位置无序排列; 无论哪一个位置被占据, 都会与甲氧基 O 原子形成分子内的 O-H...O 氢键。