Figure 61.

Bromide anions can form from one to eight XBs: VOQMOD, 2-bromopyridinium bromide; GIXGEZ, part of the infinite chain formed by tetramethylammonium bromide and 1,4-DITFB; TPCBBR, part of the ribbon formed by tetraphenylphosphonium bromide and tetrabromomethane; VAPVUE, part of the adamantanoid network formed by tetraethylammonium bromide and tetrabromomethane; VAPWEP, supramolecular anion formed by tetramethylammonium bromide and tetrabromomethane. For the sake of clarity, cations have been omitted, except in the first adduct. Color code: carbon, gray; iodine, purple; bromine, light brown; fluorine, yellow. XBs are dotted black lines. CSD Refcodes are reported.