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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures and Hirshfeld surface analyses of 2-[(4,6-di­amino­pyrimidin-2-yl)sulfan­yl]-N-(pyridin-2-yl)acetamide and 2-[(4,6-di­amino­pyrimidin-2-yl)sulfan­yl]-N-(pyrazin-2-yl)acetamide
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Crystal structures and Hirshfeld surface analyses of 2-[(4,6-di­amino­pyrimidin-2-yl)sulfan­yl]-N-(pyridin-2-yl)acetamide and 2-[(4,6-di­amino­pyrimidin-2-yl)sulfan­yl]-N-(pyrazin-2-yl)acetamide

机译:2-[(4,6-二氨基嘧啶-2-基)硫烷基] -N-(吡啶-2-基)乙酰胺和2-[(4,6-二氨基嘧啶-2-基)硫烷基的晶体结构和Hirshfeld表面分析] -N-(吡嗪-2-基)乙酰胺

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In the title compounds, C11H12N6OS (I) and C10H11N7OS (II), the di­amino­pyrimidine ring makes dihedral angles of 71.10 (9)° with the pyridine ring in (I) and 62.93 (15)° with the pyrazine ring in (II). The ethanamine group, –CH2–C(=O)–NH– lies in the plane of the pyridine and pyrazine rings in compounds (I) and (II), respectively. In both compounds, there is an intra­molecular N—H⋯N hydrogen bond forming an S(7) ring motif and a short C—H⋯O inter­action forming an S(6) loop. In the crystals of both compounds, mol­ecules are linked by pairs of N—H⋯N hydrogen bonds, forming inversion dimers with R22(8) ring motifs. In (I), the dimers are linked by N—H⋯O and N—H⋯N hydrogen bonds, forming layers parallel to (1overline{1}overline{1}). The layers are linked by offset π–π inter­actions [inter­centroid distance = 3.777 (1) Å], forming a three-dimensional supra­molecular structure. In (II), the dimers are linked by N—H⋯O, N—H⋯N and C—H⋯O hydrogen bonds, also forming a three-dimensional supra­molecular structure.
机译:在标题化合物C11H12N6OS(I)和C10H11N7OS(II)中,二氨基嘧啶环与(I)中的吡啶环成71.10°(9)°的二面角,与(II)中的吡嗪环成62.93°(15)°的二面角。乙胺基团–CH2-C(= O)–NH–分别位于化合物(I)和(II)中的吡啶环和吡嗪环的平面中。在这两种化合物中,均存在形成S(7)环基序的分子内N-H ringN氢键和形成S(6)环的短C-H⋯O相互作用。在这两种化合物的晶体中,分子通过成对的N-H⋯N氢键连接,形成具有R22(8)环基序的反向二聚体。在(I)中,二聚体通过NH和NH的氢键连接,形成平行于(1 overline {1} overline {1})的层。这些层通过偏移π-π相互作用[质心间距离= 3.777(1)Å]链接在一起,从而形成三维超分子结构。在(II)中,二聚体通过NH,NH和CH的氢键连接,也形成三维超分子结构。

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