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Figure 3
Mol­ecular profiles of selected tetra­methylxanthenediones: (a) (I)[link], (b) (II), (c) (V) and (d) (IV). For (II), (IV) and (V), the original atom coordinates (Jeyakanthan et al., 1999BB10; Bigdeli et al., 2007BB4) were used. In all cases, H atoms have been omitted for the sake of clarity.

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CHEMISTRY
ISSN: 2053-2296
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