Hydrothermal synthesis of [C6H16N2][In2Se3(Se2)]: A new one-dimensional indium selenide

Sarah J. Ewing, Anthony V. Powell, Paz Vaqueiro

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A new organically templated indium selenide, [C6H16N2][In2Se3(Se2)], has been prepared hydrothermally from the reaction of indium, selenium and trans-1,4-diaminocyclohexane in water at 170 °C. This material was characterised by single-crystal and powder X-ray diffraction, thermogravimetric analysis, UV-vis diffuse reflectance spectroscopy, FT-IR and elemental analysis. The compound crystallises in the monoclinic space group C2/c (a=12.0221(16) Å, b=11.2498(15) Å, c=12.8470(17) Å, ß=110.514(6)°). The crystal structure of [C6H16N2][In2Se3(Se2)] contains anionic chains of stoichiometry [In2Se3(Se2)]2-, which are aligned parallel to the [1 0 1] direction, and separated by diprotonated trans-1,4-diaminocyclohexane cations. The [In2Se3(Se2)]2- chains, which consist of alternating four-membered [In2Se2] and five-membered [In2Se3] rings, contain perselenide (Se2)2- units. UV-vis diffuse reflectance spectroscopy indicates that [C6H16N2][In2Se3(Se2)] has a band gap of 2.23(1) eV. © 2011 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)1800-1804
Number of pages5
JournalJournal of Solid State Chemistry
Volume184
Issue number7
DOIs
Publication statusPublished - 9 Jun 2011

Keywords

  • Crystal structure
  • Indium selenides
  • Solvothermal synthesis

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