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Title: Rb{sub 2}BaNb{sub 2}Se{sub 11}: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb{sub 2}Se{sub 11} building block

Abstract

The quaternary compound Rb{sub 2}BaNb{sub 2}Se{sub 11} has been synthesized by reacting Nb metal with an in situ formed flux of Rb{sub 2}Se{sub 3}, BaSe and Se at 773 K. Rb{sub 2}BaNb{sub 2}Se{sub 11} crystallizes in the monoclinic space group P2{sub 1}/c with four formula units and lattice parameters a=7.8438(5) A, b=13.6959(6) A, c=17.0677(13) A, {beta}=97.917(9){sup o}. The structure consists of one-dimensional anionic chains formed by interconnection of dimeric [Nb{sub 2}Se{sub 11}] units. The chains are directed along the crystallographic c-axis with Rb{sup +} and Ba{sup 2+} ions being located between the chains. The [Nb{sub 2}Se{sub 11}] units are formed by face sharing of two NbSe{sub 7} bipyramids and are joined by Se{sub 2} {sup 2-} dianions to form infinite {sup 1} {sub {infinity}}[Nb{sub 2}Se{sub 11} {sup 4-}] chains. The compound was characterized with infrared spectroscopy in the FIR region, Raman and UV/Vis diffuse reflectance spectroscopy. - Graphical abstract: The {sup 1} {sub {infinity}}[Nb{sub 2}Se{sub 11}]{sup 4-} chain in the new mixed group1/group2 polyselenide compound Rb{sub 2}BaNb{sub 2}Se{sub 11} is formed by interconnection of [Nb{sub 2}Se{sub 11}] units via Se{sub 2} {sup 2-} dianions. The [Nb{sub 2}Se{sub 11}] building blocks are formed by face sharing of two distorted pentagonal bipyramidalmore » NbSe{sub 7} groups.« less

Authors:
 [1];  [1];  [2]
  1. Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet zu Kiel, Olshausenstr. 40, D-24108 Kiel (Germany)
  2. Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet zu Kiel, Olshausenstr. 40, D-24108 Kiel (Germany), E-mail: wbensch@ac.uni-kiel.de
Publication Date:
OSTI Identifier:
21015626
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2006.09.027; PII: S0022-4596(06)00536-6; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; BARIUM COMPOUNDS; BARIUM IONS; CRYSTALLOGRAPHY; INFRARED SPECTRA; LATTICE PARAMETERS; MONOCLINIC LATTICES; NIOBIUM SELENIDES; RAMAN SPECTROSCOPY; RUBIDIUM COMPOUNDS; RUBIDIUM IONS; SPACE GROUPS; TEMPERATURE RANGE 1000-4000 K

Citation Formats

Wu Yuandong, Naether, Christian, and Bensch, Wolfgang. Rb{sub 2}BaNb{sub 2}Se{sub 11}: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb{sub 2}Se{sub 11} building block. United States: N. p., 2007. Web.
Wu Yuandong, Naether, Christian, & Bensch, Wolfgang. Rb{sub 2}BaNb{sub 2}Se{sub 11}: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb{sub 2}Se{sub 11} building block. United States.
Wu Yuandong, Naether, Christian, and Bensch, Wolfgang. Mon . "Rb{sub 2}BaNb{sub 2}Se{sub 11}: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb{sub 2}Se{sub 11} building block". United States. doi:.
@article{osti_21015626,
title = {Rb{sub 2}BaNb{sub 2}Se{sub 11}: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb{sub 2}Se{sub 11} building block},
author = {Wu Yuandong and Naether, Christian and Bensch, Wolfgang},
abstractNote = {The quaternary compound Rb{sub 2}BaNb{sub 2}Se{sub 11} has been synthesized by reacting Nb metal with an in situ formed flux of Rb{sub 2}Se{sub 3}, BaSe and Se at 773 K. Rb{sub 2}BaNb{sub 2}Se{sub 11} crystallizes in the monoclinic space group P2{sub 1}/c with four formula units and lattice parameters a=7.8438(5) A, b=13.6959(6) A, c=17.0677(13) A, {beta}=97.917(9){sup o}. The structure consists of one-dimensional anionic chains formed by interconnection of dimeric [Nb{sub 2}Se{sub 11}] units. The chains are directed along the crystallographic c-axis with Rb{sup +} and Ba{sup 2+} ions being located between the chains. The [Nb{sub 2}Se{sub 11}] units are formed by face sharing of two NbSe{sub 7} bipyramids and are joined by Se{sub 2} {sup 2-} dianions to form infinite {sup 1} {sub {infinity}}[Nb{sub 2}Se{sub 11} {sup 4-}] chains. The compound was characterized with infrared spectroscopy in the FIR region, Raman and UV/Vis diffuse reflectance spectroscopy. - Graphical abstract: The {sup 1} {sub {infinity}}[Nb{sub 2}Se{sub 11}]{sup 4-} chain in the new mixed group1/group2 polyselenide compound Rb{sub 2}BaNb{sub 2}Se{sub 11} is formed by interconnection of [Nb{sub 2}Se{sub 11}] units via Se{sub 2} {sup 2-} dianions. The [Nb{sub 2}Se{sub 11}] building blocks are formed by face sharing of two distorted pentagonal bipyramidal NbSe{sub 7} groups.},
doi = {},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 180,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}