Received 22 January 2009
The title compound, C68H56O16, was synthesized as a novel synthetic intermediate towards deeper and more elaborate resorcinarene cavitands. The structure is the first reported example of a resorcinarene cavitand bearing aromatic aldehyde functional groups at the extra-annular rim of the molecule. The 2-formylphenoxy residues are found to assume two different orientations above the molecular cavity. One half of the resorcinarene cavitand molecule appears in the asymmetric unit; the complete resorcinarene cavitand structure was generated across a mirror plane. In addition, a highly disordered ethyl acetate solvent molecule is present within the molecular cavity.
For literature pertaining to the preparation of precursors to the reported compound, see: Middel et al. (2001); Sorrell & Pigge (1993). For related literature on synthetic analogues and other precursors which illustrate the host capabilities of resorcinarene cavitand molecules, see: Friedrich et al. (2007); Mc Kay et al. (2007, 2008). For the implemetation of the SQUEEZE function in PLATON, see: Tam et al. (2005).
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT-NT (Bruker, 2005); data reduction: SAINT-NT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FL2233 ).
The financial support of the DST-NRF Centre of Excellence in Catalysis, is duly acknowledged. Our thanks to Dr Manuel Fernandes at the University of the Witwatersrand for performing the data acquisition and structure solution.
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