One-dimensional heterometallic Bi/Ag and Sb/Ag bromometalates(iii): structures, thermal stability and optical properties†

Abstract

Silver-containing heterometallic bromobismuthates(III) (3-BrPyC₃){[BiAgBr₆]} (1) and (ImC₄){[BiAgBr₆]} (2) and bromoantimonate (ImC₄)₃{[Sb₃Ag₂Br₁₇]} (3) (3-BrPyC₃ – 1,6-bis(3-bromopyridin-1-ium)propane dication, ImC₄ – diprotonated 1,4-bis(1H-imidazol-1-yl)butane) were synthesized. All compounds are composed of infinite chains, featuring yet unprecedented in halometalate(III) chemistry structural types. 1–3 reveal relatively high (>200 °C) thermal stability. Optical band gaps for 1–3 were estimated from UV-vis spectroscopy data.