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In the title compound, C(42)H(46)N(2)O(4), both crystallographically independent mol-ecules display a 1,3-alternate conformation. Their crystal packing is stabilized by non-classical C-H⋯N hydrogen bonds. The dihedral angles between the planes of the aromatic rings and the mean plane through the methyl-ene C atoms bridging the aromatic rings are 78.10 (13), 80.74 (14), 81.89 (12) and 79.05 (14)° for the first mol-ecule, and 71.65 (11), 76.60 (13), 77.97 (14) and 74.76 (13)° for the second mol-ecule. Both mol-ecules have three C atoms of one prop-oxy chain disordered over two set of sites; the site-occupancy factors are 0.7/0.3 and 0.6/0.4, respectively.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2979721 | PMC |
| http://dx.doi.org/10.1107/S1600536810002242 | DOI Listing |
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