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Figure 1 Labelling of (I) follows the system used previously (Aldridge et al., 1975). H atoms on alkyl and aryl carbons have been removed for clarity. Displacement ellipoids are set at 50%.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 69| Part 4| March 2013| Pages o467-o468
doi:10.1107/S1600536813005606
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