Incorporation of nitrate ions into halobismuthates.

• Main group compounds. • Inorganic-organic hybrid materials. • Nitrate inserted halobismuthates. • Mixed halobismuthates. Two binuclear halobismuthates (Bi 2 X 10)4− (X = Cl (1) and Br (2)) containing m -phenylenediammonium cation m PDA-(H) 2 2+ or m PDA-(H)]1+ starting from corresponding BiX 3 (X = Cl, Br) and their nitrate derivatives i.e., [Bi 2 X 8 (NO 3) 2 m PDA-(H) 2 2 (X = Cl (3) and Br (4)) starting from Bi(NO 3) 3 ,5H 2 O have been synthesized. 3 and 4 are the first examples of mixed halobismuthates where nitrate ions are coordinated to bismuth centers along with other halide ions. All the compounds have been characterized by single crystal XRD, elemental analysis and IR spectroscopy. The structural comparisons of 1 – 4 have been discussed. [ABSTRACT FROM AUTHOR]