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Abstract <p>Single crystals of two new nickel diselenite/hydroselenite halides, (NH<sub>4</sub>Cl)[Ni<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>(Se<sub>2</sub>O<sub>5</sub>)Cl<sub>2</sub>] (<b>1</b>) and (RbBr)[Ni(HSeO<sub>3</sub>)<sub>2</sub>(H<sub>2</sub>SeO<sub>3</sub>)<sub>0.5</sub>(H<sub>2</sub>O)<sub>0.5</sub>] (<b>2</b>), were produced upon evaporation of aqueous solutions containing nickel and rubidium (ammonium) halide and selenious acid. Both structures correspond to new structure types. That of <b>1</b> is comprised of neutral [Ni<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>(Se<sub>2</sub>O<sub>5</sub>)Cl<sub>2</sub>] chains aligned into weakly bonded layers linked by hydrogen bonding. The ammonium cations and extra chloride anions reside in the interlayer space. The structure of <b>2</b> belong to the family of the so-called “layered hydroselenites” with neutral [Ni(HSeO<sub>3</sub>)<sub>2</sub>] layers decorated by Br<sup>–</sup> and linked by H<sub>2</sub>SeO<sub>3</sub> molecules into a weak hydrogen-bonded framework with Rb<sup>+</sup> cations filling the voids therein. Under the same conditions, no analogies have hitherto been found to the products formed in related systems containing copper, cobalt, or zinc halides.</p>

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Structural and Spectroscopic Studies of (NH4Cl)[Ni2(H2O)6(Se2O5)Cl2] and (RbBr)[Ni(HSeO3)2(H2SeO3)0.5(H2O)0.5]—New Members of the Transition Metal (Hydro)Selenite-Halide Family

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • D. O. Charkin,
  • A. M. Gorianskii,
  • V. Yu. Grishaev,
  • A. A. Kompanchenko,
  • A. N. Gosteva,
  • S. M. Aksenov

摘要

Abstract

Single crystals of two new nickel diselenite/hydroselenite halides, (NH4Cl)[Ni2(H2O)6(Se2O5)Cl2] (1) and (RbBr)[Ni(HSeO3)2(H2SeO3)0.5(H2O)0.5] (2), were produced upon evaporation of aqueous solutions containing nickel and rubidium (ammonium) halide and selenious acid. Both structures correspond to new structure types. That of 1 is comprised of neutral [Ni2(H2O)6(Se2O5)Cl2] chains aligned into weakly bonded layers linked by hydrogen bonding. The ammonium cations and extra chloride anions reside in the interlayer space. The structure of 2 belong to the family of the so-called “layered hydroselenites” with neutral [Ni(HSeO3)2] layers decorated by Br– and linked by H2SeO3 molecules into a weak hydrogen-bonded framework with Rb+ cations filling the voids therein. Under the same conditions, no analogies have hitherto been found to the products formed in related systems containing copper, cobalt, or zinc halides.