The title compound {systematic name: [2-(1-hydroxycyclohexyl)-2-(4-methoxyphenyl)ethyl]dimethylazanium benzene-sulfonate monohydrate}, C17H28NO2+·C6H5O3S?·H2O, is a besylate salt hydrate of the anti-depressant drug venlafaxine. In the crystal, besylate anions and water mol-ecules self-assemble, forming hydrogen-bonded dimers linked around inversion centers, with graph set R44(6). The crystal packing features a chain of alternate dimers and venlafaxine cations in the b-axis direction with the components linked by O—H?O hydrogen bonds and C—H?O and C—H?π inter-actions. This is the first example of a venlafaxine cation with a closed conformation, as it features an intra-molecular N—H?O inter-action involving the protonated N atom.
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机译：标题化合物{系统名称：[2-（1-羟基环己基）-2-（4-甲氧基苯基）乙基]二甲基氮杂苯磺酸一水合物}，C17H28NO2 +·C6H5O3S2·H2O，是抗抑郁药的苯磺酸盐水合物。文拉法辛。在晶体中，苯磺酸根阴离子和水分子自组装，形成围绕反转中心连接的氢键二聚体，并具有图集R44（6）。该晶体堆积物在b轴方向上具有交替的二聚体和文拉法辛阳离子的链，其组分通过OH H 2 O氢键以及CH H 2 O和CH Hπ相互作用相互作用。这是具有闭合构象的文拉法辛阳离子的第一个例子，因为它具有涉及质子化N原子的分子内N-H2O相互作用。
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