Antimony(V) Bromide and Polybromide Complexes with N‐alkylated Quinolinium or Isoquinolinium Cations: Substituent‐dependent Assembly of Polymeric Frameworks

Reactions of [Sb III Br 6 ] 3– with Br 2 in HBr in the presence of N‐substituted quinolinium or isoquinolinium cations result in new complexes of hexabromidoantimonates of Sb V and their polybromide adducts: (N‐MeQuin) 2 {[SbBr 6 ](Br 3 )} ( 1 ), (N‐MeIsoquin) 2 {[SbBr 6 ](Br 3 )} ( 2 ), and (N‐EtQuin)[SbBr 6 ] ( 3 ). Thermal stability was studied; estimated energies of supramolecular Br ··· Br interactions were...