J. Chil. Chem. Soc., 56, Nº 1 (2011)
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[
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centroid Cg1) and C4-C9 (centroid Cg2). The perpendicular Cg1···Cg2
(
distance is 3.5688 (15) Å (Figure 3). A similar packing interaction has been
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2
0
[centroid-centroid distance of 3.8380 (15)Å].
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a
b
Figure 3. A partial packing view of the crystal structure of 1 showing the
formation of weak intermolecular contacts between Cg1...Cg2 [symmetry code
i): 1-x,1-y,-z] in the bc-plane (a). The centroids Cg are denoted by small black
(
spheres and dashed lines represent intermolecular interactions. (b) Shows
parallel stacking between neighboring coumarin rings in the ac plane.
ACKNOWLEDGMENTS
M. T. Garland and A. Ibáñez are thanked for the X-ray measurements
and FONDAP Grant Nº 11980002 for the purchase of the Bruker SMART
CCD single crystal diffractometer. O. G.-B. is the recipient of a CONICYT
fellowship, This work was funded by ICM grant Nº P05-001-F.
Supplementary Information: Crystallographic data (excluding structure
factors) for the structural analysis have been deposited in the Cambridge
Crystallographic Data Centre, CCDC 801740. These data can be obtained free
of charge from the Cambridge Crystallographic Data Centre; Postal Address:
CCDC, 12 Union Road, Cambridge CB21EZ, UK, Telephone: (44) 01223
7
62910, Fax: (44) 01223 336033, e-mail: deposit@ccdc.cam.ac.uk.
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