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C 11 H 14 Br 2 N 2 O, orthorhombic, Fdd2(no. 43), a =19.364(3 Source of material Amixture of pyridine (0.1 mol) and dibromomethane (0.05 mol) was reacted under nitrogen atmosphere with stirring at 353 Kfor 48 h. The resulting clear solution was evaporated under vacuum. Colourless crystals suitable forX-ray analysis were obtained by slow evaporationofawater solution over aperiodofthree weeks (yield 73 %).E lemental analysis -f ound: C, 37.75 %; H, 4.04 %; N, 8.02 %. calculated for C 11 H 14 Br 2doi:10.1524/ncrs.2011.0246 fatcat:usnc5dp7rfakfmweg6vhnvxiii