Cc (9)
with aโซุโฌ 11.1564(1) A s , bโซ)1(1778.22ุโฌ A s , cโซ)2(5256.21ุโฌ A s , โซ,ยฐ)1(930.901ุโฌ Zโซ,4ุโฌ and R/R w โซ.%4.4/1.4ุโฌ The one-dimensional structure features [In 2 (PSe 5 ) 2 (P 2 Se 6 )] 4nุ n chains that consist of In 2 (PSe 5 ) 2 dimers. These dimers are then bridged along the a-axis by tetradentate [P 2 Se 6 ] 4ุ units to form the chain. In 3ุ is in an octahedral environment. Rb 3 Sn(PSe 5 )(P 2 Se 6 ) crystallizes in the monoclinic space group P2 1 /a (14) with aโซ)2(310.41ุโฌ A s , bโซ)8(6343.7ุโฌ A s , cโซ)4(389.12ุโฌ A s , โซ,ยฐ)1(16.601ุโฌ Zโซ,4ุโฌ and R/R w โซุโฌ 3.5/4.4%. The one-dimensional structure features [Sn(PSe 5 ) (P 2 Se 6 )] 3nุ n chains with octahedral Sn 4ุ . The neighboring Sn atoms are connected via tetradentate [P 2 Se 6 ] 4ุ units to form the chain. The [PSe 5 ] 3ุ act as chelating side groups employing the diselenide ''arm'' and one of the monoselenide atoms to coordinate to Sn. The compounds were characterized with differential thermal analysis, far-IR, and solid-state UV/vis diffuse reflectance spectroscopy.