Adaptability of aripiprazole towards forming isostructural hydrogen bonding networks in multi-component salts: a rare case of strong O–H⋯O− ↔ weak C–H⋯O mimicry
作者:Jagadeesh Babu Nanubolu、Balasubramanian Sridhar、Krishnan Ravikumar、Suryanarayan Cherukuvada
DOI:10.1039/c3ce00022b
日期:——
crystals with the modulation of its conformation and hydrogen bond synthons. Salts with aromatic acids engage in three-dimensional isostructural helical networks and the inorganic acid salts form two-dimensional layered networks. Remarkably, the helices mediated by strong charge assisted O–H⋯O− interactions are mimicked by weaker neutral C–H⋯O interactions in aromatic salts of aripiprazole. Our results
阿立哌唑与苯甲酸(I),2,4-二羟基苯甲酸(II),2,5-二羟基苯甲酸(III),盐酸(IV)和水杨酸(V)络合。所得盐的特征在于单晶X射线衍射,粉末X射线衍射,红外光谱,差示扫描量热法和热重分析。剑桥结构数据库中的两种盐(阿立哌唑硝酸盐和高氯酸盐)用于结构比较。有趣的是,阿立哌唑通过其构象和氢键合成子的调节形成两种类型的同构晶体。与芳族酸形成的盐参与三维等构螺旋网络,而无机酸盐形成二维分层网络。值得注意的是,由强电荷辅助的O–H⋯O介导的螺旋−阿立哌唑芳香盐中较弱的中性C–H⋯O相互作用模拟了相互作用。我们的结果表明,同构性在多组分系统中可能更常见。该盐是稳定的,并且可以作为阿立哌唑合适制剂的潜在替代物。