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Figure 3
(a) A packing diagram for (I)[link], viewed approximately down the a axis, showing the hydrogen-bonding inter­actions as dashed lines for the inter­layers. The H atoms of the methyl groups have been omitted for clarity. (b) A packing diagram for (II)[link], viewed approximately down the b axis, showing how the inter­layer spaces are occupied alternately by a methyl group of the upper layer and another one from the layer below.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 66| Part 12| November 2010| Pages m379-m383
doi:10.1107/S010827011004761X
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