Abstract

New hybrid 2,2'-bipyridinium halobismuthates ([bipyH]⁺) (I and II), 7,8-dihydro-6H-dipyrido[1,2-a:2',1'-c][1,4]diazepine-5,9-diium ([bipyC₃]²⁺) (III), 6,7,8,9-tetrahydrodipyrido[1,2-a:2',1'-c][1,4]diazocin-5,10-diium ([bipyC₄]²⁺) (IV), and 1,1'-(pentanediyl)bis(2,2'-bipyridinium) ((bipyH)₂C₅]⁴⁺) (V) have been isolated and characterized by X-ray diffraction. The structure of I contains a monoprotonated cation 2,2'-bipyridinium and the isolated [Bi₂Br₁₀]^4– anion. 2,2'-Bipyridinium bromobismuthate II contains a polymeric anion and is isostructural to the previously described iodobismuthate. Bromobismuthate III includes [BiBr₆]^3– anions and water molecules. Iodobismuthate [bipyC₃]₂[Bi₂I₁₀] (VI) is isostructural to IV. The structure of V contains [(bipyH)₂C₅]⁴⁺ cations and three types of anions: [Bi₂Br₁₀]^4–, [BiBr₆]^3–, and Br^–. Compounds I, III, and VI have been isolated in pure form. The values of the optical band gap for them are 2.84, 2.88, and 2.11 eV, respectively.

中文翻译：

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2,2'-联吡啶鎓衍生物新型杂化卤酸铋的晶体结构和光学性质

摘要

新杂化 2,2'-bipyridinium halobismuthates ([bipyH] ⁺ ) ( I and II) , 7,8-dihydro-6 H -dipyrido[1,2- a :2',1'- c ][1,4 ]diazepine-5,9-diium ([bipyC ₃ ] ²⁺ ) ( III) , 6,7,8,9-tetrahydrodipyrido[1,2- a :2',1'- c ][1,4]diazocin -5,10-diium ([bipyC ₄ ] ²⁺ ) ( IV)和 1,1'-(戊二基)双(2,2'-联吡啶) ((bipyH) ₂ C ₅ ] ⁴⁺ ) ( V )已通过 X 射线衍射分离和表征。的结构I含有单质子化阳离子 2,2'-联吡啶鎓和分离的 [Bi ₂ Br ₁₀ ] ^4-阴离子。2,2'-Bipyridinium bromobismuthate II含有一个聚合阴离子，与前面描述的碘铋酸盐具有相同结构。溴化铋III包括 [ BiBr ₆ ] ^3–阴离子和水分子。Iodobismuthate [bipyC ₃ ] ₂ [Bi ₂ I ₁₀ ] ( VI ) 与IV同构。V的结构包含[(bipyH) ₂ C ₅ ] ⁴⁺阳离子和三种阴离子：[Bi ₂ Br ₁₀ ] ^4–、[BiBr ₆ ] ^3–和 Br ^–。化合物I、III和VI已以纯形式分离。它们的光学带隙值分别为 2.84、2.88 和 2.11 eV。