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Crystal structures, DFT studies and UV–visible absorption spectra of two anthracenyl chalcone derivatives

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Figure 1(a) The molecular structure of compounds (I) and (II) and (b) the structures optimized at the DFT/B3LYP 6–311++G(d,p) level of theory.
Figure 2Packing diagram showing (a) weak N—H� � �O and C—H� � �� interactions in (I) and (b) weak C—H� � �O and �–� interactions in (II).
Figure 3The UV–vis absorption spectra of compounds (I) and (II). For theextrapolation lines, see text.
Table 3

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