C-H center dot center dot center dot O Hydrogen bonded multi-point recognition in molecular assemblies of dibenzylidene ketones and 1,3,5-trinitrobenzenes
C-H center dot center dot center dot O Hydrogen bonded multi-point recognition in molecular assemblies of dibenzylidene ketones and 1,3,5-trinitrobenzenes
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DOI：
10.1039/a607106f
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发表时间：
1997-07-01
影响因子：
--
通讯作者：
Carrell, HL
中科院分区：
文献类型：
--
作者：
Biradha, K;Nangia, A;Carrell, HL
二亚苄基丙酮1a、2，5-二亚苄基环戊酮1b、2，6-二亚苄基环己酮1c和2，5-二亚苄基环庚-3-烯酮1d与1，3，5-三硝基苯2a、苦酰氯1b和苦味酸2c形成结晶的化学计量配合物。这些配合物的结构是由多点C-H键介导的。O氢键。其中一些分子识别模式还包含更强的O-H。O氢键。C-H ... O氢键在这些多点的超分子电子通常是较短的，更线性的比其他C-H…在这些配合物中发现了O氢键。
Dibenzylideneacetone 1a, 2,5-dibenzylidenecyclopentanone 1b, 2,6-dibenzylidenecyclohexanone 1c and 2,5-dibenzylidenecyclopent-3-enone 1d form crystalline stoichiometric complexes with 1,3,5-trinitrobenzene 2a, picryl chloride 1b and picric acid 2c. The structures of these complexes are mediated by multi-point C-H ... O hydrogen bonds. Some of these patterns of molecular recognition also contain stronger O-H ... O hydrogen bonds. The C-H ... O hydrogen bonds within these multi-point supramolecular synthons are generally shorter and more linear than the other C-H ... O hydrogen bonds found in these complexes.