As part of our interest in halogenobismuthate(III) organic–inorganic hybrid materials, a novel compound named bis(4,4′-diammoniumdiphenylsulfone) hexadecaiodotetrabismuthate(III) tetrahydrate with the chemical formula (C₁₂H₁₄N₂O₂S)₂[Bi₄I₁₆]·4H₂O, abbreviated as (H₂DDS)[Bi₄I₁₆], has been prepared by a slow evaporation method at room temperature. This compound was characterized by single crystal X-ray diffraction (SCXRD), spectroscopic measurements, thermal study and antimicrobial activity. The examination of the molecular arrangement shows that the crystal packing can be described as made of layers of organic [C₁₂H₁₄N₂O₂S]²⁺ entities and H₂O molecules, between which tetranuclear [Bi₄I₁₆]⁴⁻ units, isolated from each other, are inserted. The cohesion among the different molecules is assured by N–H⋯I, N–H⋯O and O–H⋯I hydrogen bonding interactions, forming a three-dimensional network. Room temperature IR, Raman spectroscopy of the title compound were recorded and analyzed. The optical properties were also investigated by both UV-vis and photoluminescence spectroscopy. Moreover, the synthesized compound was also screened for in vitro antimicrobial (Gram-positive and Gram-negative) and antioxidant activities (scavenging effect on DPPH free radicals, reducing power and total antioxidant capacity).

中文翻译：

---

一种含铋(III)碘化物阴离子的新型杂化材料的晶体结构、光谱测量、光学性质、热学研究和生物活性

作为我们对卤化铋( III )有机-无机杂化材料的兴趣的一部分，一种名为双(4,4'-二铵二苯砜)十六碘四铋(III)四水合物的新型化合物具有化学式(C ₁₂ H ₁₄ N ₂ O ₂ S) ₂ [Bi ₄ I ₁₆ ]·4H ₂ O，简写为(H ₂ DDS)[Bi ₄ I ₁₆]，在室温下采用慢速蒸发法制备。通过单晶 X 射线衍射 (SCXRD)、光谱测量、热研究和抗菌活性对该化合物进行了表征。分子排列研究表明，晶体堆积可以描述为由有机[C ₁₂ H ₁₄ N ₂ O ₂ S] ²⁺实体和H ₂ O分子层组成，其间为四核[Bi ₄ I ₁₆ ] ^{4 -}插入彼此隔离的单元。N-H⋯I、N-H⋯O和O-H⋯I氢键相互作用确保不同分子之间的内聚力，形成三维网络。记录并分析标题化合物的室温IR、拉曼光谱。还通过紫外可见和光致发光光谱研究了光学性质。此外，还筛选了合成的化合物的体外抗菌（革兰氏阳性和革兰氏阴性）和抗氧化活性（对 DPPH 自由基的清除作用、还原能力和总抗氧化能力）。