Received 7 March 2012
aMolecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, PO Wits 2050, South Africa,bFaculty of Science, NYU Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates, and cInstitute of Mineralogy and Petrography, University of Innsbruck, Innsbruck 6020, Austria
Correspondence e-mail: firstname.lastname@example.org
The title compound, C18H27N3O, is a derivative of the antituberculosis drug isoniazid (systematic name: pyridine-4-carbohydrazidei). The crystal structure consists of repeating C(4) chains along the b axis, formed by N-HO hydrogen bonds with adjacent amide functional groups that are related by a b-glide plane. The cyclododecyl ring has the same approximately `square' conformation, as seen in the parent hydrocarbon cyclododecane.
Data collection: CrysAlis PRO (Oxford Diffraction, 2006); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FJ2532 ).
This work was supported in part by grant No. 2004118 from the United States-Israel Binational Science Foundation (Jerusalem). AL thanks the South African National Research Foundation for a postdoctoral scholarship (SFP2007070400002) and the Oppenheimer Memorial Trust for financial support, and the Molecular Sciences Institute for infrastucture support.
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