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Figure 2 (a) Detail of crystal structure showing selected weak hydrogen bond contacts to bromide and to iodine. (b, c) 2 x 2 x 2 supercell of [(n-Bu4NBr)(o-DITFB)]·CH2Cl2 viewed along the b axis where in (b) the cation is present and in (c) is absent to clarify the image. Rows of the polymeric bromide anionic chains are separated by n-Bu4N+ cations. Hydrogen atoms are not shown for clarity, iodine is in purple, carbon in black, fluorine in green, bromine in orange, and chlorine in blue. |