Copper and silver heterometallic iodoantimonates: structure, thermal stability, and optical properties

Abstract

Seven heterometallic iodoantimonates with the general formula (Cat)2{[Sb2M2I10]} (M = Cu(i) (1–6), Ag(i) (7)) were prepared.

Ternary Complexes of BiI3/CuI and SbI3/CuI with Tetrahydrothiophene

“…It solved in orthorhombic space group Pbcn , as half-independent. All Bi–I, Cu–I, and Cu–S bond lengths were within conventional ranges. − Bond angles around Bi were within 3° of 90° octahedral (O h ) and around Cu within 6.5° of 109.5° tetrahedral ( T d ). The structure is composed of O h BiI 6 units that are bridged to T d CuI 2 (THT) 2 units via pairs of μ 2 -I, forming via Cu­(μ 2 -I) 2 Bi rhombs, see Figure .…”

“…A good deal of literature exists for charge-separated halobismuthate­(III) and haloantimonate­(III) salts, − ,,− much of it with alkali or organic ammonium cations. Additionally, there are multiple reports of halobismuthate and haloantimonate anions containing Cu­(I) or Ag­(I), such as Bi 2 Cu 2 I 10 2– , or paired with Cu­(I) or Ag­(I) cations, ,− many of which show relatively small band gaps. However, neutral ligand-supported iodobismuthate/cuprate and iodoantimonate/cuprate compounds remain extraordinarily rare.…”