Growing crystalline selenidostannates in deep eutectic solvent

Ting Cai, Jian Nan Zhu, Fang Fang Cheng, Peng Li, Wei Li, Ming Yu Zhao, Wei Wei Xiong

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

By using deep eutectic solvent mixture of ChCl (ChCl = choline chloride) and 1,8-diaminooctane as reaction medium, three new selenidostannates were synthesized, namely [Cr(en)3]2.5[SnSe4]·Cl3.5·(pip)0.5·1.5H2O (1) (en = ethylenediamine, pip = piperazine), [Ni(en)3][Sn3Se6.5(Se2)0.5] (2), and [Ni(en)3][Sn3Se7] (3). Compound 1 features a primary unit of SnSe4 tetrahedron, in which the [Cr(en)3]3+ complex acts as charge balance agent. In compound 2, there are two kinds of one dimensional chains, including [Sn3Se7]n2n and [Sn3Se6(Se)2]n2n anionic chains. The [Sn3Se7]n2n chain is constructed by connecting [Sn3Se9] units via edge-sharing Se2- ion, while the [Sn3Se6(Se)2]n2n chain is constructed by linking [Sn3Se10] units via sharing one Se2- ion and one Se22- ion. Compound 3 features a lamellar anionic [Sn3Se7]n2n structure, where the [Ni(en)3]2+ ions are located in inter-lamellar space. The optical absorption spectra indicate band gaps of 2.23 eV for 1, 1.95 eV for 2, and 2.01 eV for 3.

Original languageEnglish
Pages (from-to)214-218
Number of pages5
JournalInorganica Chimica Acta
Volume484
DOIs
StatePublished - 1 Jan 2019
Externally publishedYes

Keywords

  • Chalcogenides
  • Choline chloride
  • Deep eutectic solvent
  • Selenidostannates

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