Received 30 November 2011
aDepartment of Chemistry and Biochemistry, 1400 J. R. Lynch St, PO Box 17910, Jackson State University, Jackson, MS 39217-0510, USA, and bDepartment of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Room 208, Norman, OK 73019-3051, USA
Correspondence e-mail: email@example.com
The title compound, C33H26N6O2, contains two 3-(quinolin-8-yl)urea groups linked to a diphenylmethane. The asymmetric unit contains two molecules, A and B. Each quinoline plane is essentially parallel to the attached urea unit [dihedral angles = 8.97 (18) and 8.81 (19) in molecule A and 18.47 (18) and 4.09 (19)° in molecule B]. The two benzene rings are twisted, making dihedral angles of 81.36 (8)° in A and 87.20 (9)° in B. The molecular structures are stabilized by intramolecular N-HN hydrogen bonds. In the crystal, each urea O atom is involved in two N-HO hydrogen bonds, generating two interpenetrating three-dimensional sets of molecules.
For general background to urea-based compounds in supramolecular chemistry, see: Fan et al. (1993); Smith et al. (1992); Pramanik et al. (2011); Caltagirone et al. (2008); Custelcean et al. (2005). For related structures, see: Wu et al. (2008); Saeed et al. (2010).
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2320 ).
The National Science Foundation is acknowledged for a CAREER award (CHE-1056927) to MAH. The work was supported by the National Institute of Health (G12RR013459). The NMR instrument used for this work was funded by the National Science Foundation (CHE-0821357).
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