New quaternary selenoantimonates AHgSbSe3 (A = Rb, Cs): synthesis, structures and optical properties

Zhen Chen, R. J. Wang, Jing Li

Research output: Chapter in Book/Report/Conference proceedingChapter

7 Citations (Scopus)

Abstract

Solvothermal reactions in ethylenediamine have resulted in two quaternary mercury containing selenoantimonates: RbHgSbSe3 (I) and CsHgSbSe3 (II). Compound I crystallizes in monoclinic system, space group P21/c (no. 14) with a = 7.758(2) angstrom, b = 11.234(2) angstrom, c = 8.849(2) angstrom, β = 106.60(3)°, V = 739.1(3) angstrom3, Z = 4. Compound II crystallizes in orthorhombic system, space group Cmcm (no. 63) with a = 4.444(1) angstrom, b = 15.514(6) angstrom, c = 11.261(7) angstrom, V = 776.4(6) angstrom3, Z = 4. Both compounds are layered materials and their crystal structures are closely related. Both contain layers of 2[HgSbSe3 -] separated by alkali-metal cations A+ (Rb, Cs). Diffuse reflectance experiments show that both compounds are semiconductors with estimated band gaps of 1.7 eV for I and 1.6 eV for II, respectively.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages419-424
Number of pages6
Volume547
Publication statusPublished - 1999
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: Nov 30 1998Dec 3 1998

Other

OtherProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998'
CityBoston, MA, USA
Period11/30/9812/3/98

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Chen, Z., Wang, R. J., & Li, J. (1999). New quaternary selenoantimonates AHgSbSe3 (A = Rb, Cs): synthesis, structures and optical properties. In Materials Research Society Symposium - Proceedings (Vol. 547, pp. 419-424). Materials Research Society.