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Title: Cs{sub 2}PdSe{sub 8}: A unique open framework structure with double helical assemblies of [Pd(Se{sub 4}){sub 2}]{sup 2{minus}}

Abstract

Cs{sub 2}PdSe{sub 8}(1), a novel palladium polyselenide with a three-dimensional open framework structure, has been synthesized via a solvothermal reaction using ethylenediamine as solvent. Its crystal structure has been determined by single crystal X-ray diffraction. The structure belongs to the tetragonal space group I4{sub 1}/acd (No. 142), a = 14.935(2), c = 12.907(3) {angstrom}, V = 2897.0(8) {angstrom}{sup 3}, Z = 8, R{sub 1} = 0.044, and wR{sub 2} = 0.063, for 640 unique reflections. The unique three-dimensional network is composed of two {sub {infinity}}{sup 3}[Pd(Se{sub 4}){sub 2}]{sup 2{minus}} frameworks that are topologically identical and mutually insertional. Each framework is built upon by connecting the neighboring square-planar [Pd(Se{sub 4}){sub 2}]{sup 2{minus}} units to generate an infinite assembly resembling alternating right- and left-handed helices running along the c-axis. Thermal analysis (TGA) showed that compound 1 is stable up to 320 C. Optical studies performed on the powder sample of 1 suggested that the compound is a semiconductor and a band gap of 1.5 eV was estimated from the diffuse reflectance data.

Authors:
; ; ;  [1]
  1. Rutgers Univ., Camden, NJ (United States). Dept. of Chemistry
Publication Date:
Sponsoring Org.:
National Science Foundation, Washington, DC (United States)
OSTI Identifier:
305397
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 140; Journal Issue: 1; Other Information: PBD: Oct 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL STRUCTURE; CESIUM SELENIDES; PALLADIUM SELENIDES; LATTICE PARAMETERS; X-RAY DIFFRACTION; THERMAL ANALYSIS; DATA

Citation Formats

Li, J, Chen, Z, Wang, R J, and Lu, J Y. Cs{sub 2}PdSe{sub 8}: A unique open framework structure with double helical assemblies of [Pd(Se{sub 4}){sub 2}]{sup 2{minus}}. United States: N. p., 1998. Web. doi:10.1006/jssc.1998.7950.
Li, J, Chen, Z, Wang, R J, & Lu, J Y. Cs{sub 2}PdSe{sub 8}: A unique open framework structure with double helical assemblies of [Pd(Se{sub 4}){sub 2}]{sup 2{minus}}. United States. https://doi.org/10.1006/jssc.1998.7950
Li, J, Chen, Z, Wang, R J, and Lu, J Y. Thu . "Cs{sub 2}PdSe{sub 8}: A unique open framework structure with double helical assemblies of [Pd(Se{sub 4}){sub 2}]{sup 2{minus}}". United States. https://doi.org/10.1006/jssc.1998.7950.
@article{osti_305397,
title = {Cs{sub 2}PdSe{sub 8}: A unique open framework structure with double helical assemblies of [Pd(Se{sub 4}){sub 2}]{sup 2{minus}}},
author = {Li, J and Chen, Z and Wang, R J and Lu, J Y},
abstractNote = {Cs{sub 2}PdSe{sub 8}(1), a novel palladium polyselenide with a three-dimensional open framework structure, has been synthesized via a solvothermal reaction using ethylenediamine as solvent. Its crystal structure has been determined by single crystal X-ray diffraction. The structure belongs to the tetragonal space group I4{sub 1}/acd (No. 142), a = 14.935(2), c = 12.907(3) {angstrom}, V = 2897.0(8) {angstrom}{sup 3}, Z = 8, R{sub 1} = 0.044, and wR{sub 2} = 0.063, for 640 unique reflections. The unique three-dimensional network is composed of two {sub {infinity}}{sup 3}[Pd(Se{sub 4}){sub 2}]{sup 2{minus}} frameworks that are topologically identical and mutually insertional. Each framework is built upon by connecting the neighboring square-planar [Pd(Se{sub 4}){sub 2}]{sup 2{minus}} units to generate an infinite assembly resembling alternating right- and left-handed helices running along the c-axis. Thermal analysis (TGA) showed that compound 1 is stable up to 320 C. Optical studies performed on the powder sample of 1 suggested that the compound is a semiconductor and a band gap of 1.5 eV was estimated from the diffuse reflectance data.},
doi = {10.1006/jssc.1998.7950},
url = {https://www.osti.gov/biblio/305397}, journal = {Journal of Solid State Chemistry},
number = 1,
volume = 140,
place = {United States},
year = {1998},
month = {10}
}