Host channel framework determined by C–H⋯π interaction in the inclusion crystal of 2,5-bis(diphenylmethyl)hydroquinone and benzaldehyde

• Published in: Journal of molecular structure 2005, Vol.733 (1), p.143-149
• Main Authors: Guo, Wen-Sheng, Guo, Fang, Xu, He-Nan, Yuan, Lei, Wang, Zhong-Hua, Tong, Jian
• Format: Article
• Language: English
• Subjects: 2,5-Bis(diphenylmethyl)hydroquinone; Hydrogen bonding; Inclusion compound; Inter- and intra-C–H⋯π interactions
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2004.08.013

A new kind of host compound, 2,5-bis(diphenylmethyl)hydroquinone is designed and prepared. The crystal structure of the inclusion compound formed by the host with benzaldehyde was determined by single crystal X-ray diffraction. The result shows that the host exhibits a stable conformation through intramolecular CH⋯π interactions in the inclusion crystal, and benzaldehyde guest molecules are accommodated in the channel which is constructed by the hosts, in which intermolecular C–H⋯π interactions between the hosts, play an important role in the architecture of channel framework besides van der Waal's forces. The complex structure is further stabilized by strong hydrogen bonding (O1–H1⋯O1′) and two weak C–H⋯O interactions (C5′–H5′⋯O1, C3–H3⋯O1′) between the host and guest.