Abstract KCl72H2SeO3 and CsCl7H2SeO3 have been synthesized using solution evaporation methods from aqueous solution. Both compounds are monoclinic (P2/n and P21/c) and demonstrate new structure types. One symmetrically unique SeO(OH)2 molecule is present in each structure. SeO(OH)2 molecules via strong hydrogen bonds form chains in KCl72H2SeO3 and layers in ?sCl7H2SeO3. The structures of KCl72H2SeO3 and CsCl7H2SeO3 can be described as consisting of ionic KCl chains and CsCl layers incorporated into the covalent- and hydrogen-bonded H2SeO3 matrix. To the best of our knowledge, the cases when selenious acid acts as a contributor to the molecular building blocks of salt-inclusion structures are not known to date.

中文翻译：

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分子无机聚合物：KCl72H 2SeO 3 和 CsCl7H 2SeO 3 的合成和晶体结构

摘要 KCl72H2SeO3 和CsCl7H2SeO3 已使用溶液蒸发法从水溶液中合成。这两种化合物都是单斜晶系（P2/n 和 P21/c），并表现出新的结构类型。每个结构中都存在一个对称独特的 SeO(OH)2 分子。SeO(OH)2 分子通过强氢键在 KCl72H2SeO3 中形成链，在 ?sCl7H2SeO3 中形成层。KCl72H2SeO3 和 CsCl7H2SeO3 的结构可以描述为由离子 KCl 链和 CsCl 层组成，这些层结合到共价键和氢键的 H2SeO3 基质中。据我们所知，亚硒酸作为盐包合物结构分子构建块的贡献者的情况目前尚不清楚。