Rb2BaNb2Se11: A new quaternary niobium polyselenide with infinite anionic chains composed of Nb2Se11 building block
- 1. Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet zu Kiel, Olshausenstr. 40, D-24108 Kiel (Germany)
Description
The quaternary compound Rb2BaNb2Se11 has been synthesized by reacting Nb metal with an in situ formed flux of Rb2Se3, BaSe and Se at 773 K. Rb2BaNb2Se11 crystallizes in the monoclinic space group P21/c with four formula units and lattice parameters a=7.8438(5) A, b=13.6959(6) A, c=17.0677(13) A, β=97.917(9)o. The structure consists of one-dimensional anionic chains formed by interconnection of dimeric [Nb2Se11] units. The chains are directed along the crystallographic c-axis with Rb+ and Ba2+ ions being located between the chains. The [Nb2Se11] units are formed by face sharing of two NbSe7 bipyramids and are joined by Se22- dianions to form infinite 1∞[Nb2Se114-] chains. The compound was characterized with infrared spectroscopy in the FIR region, Raman and UV/Vis diffuse reflectance spectroscopy. - Graphical abstract: The 1∞[Nb2Se11]4- chain in the new mixed group1/group2 polyselenide compound Rb2BaNb2Se11 is formed by interconnection of [Nb2Se11] units via Se22- dianions. The [Nb2Se11] building blocks are formed by face sharing of two distorted pentagonal bipyramidal NbSe7 groups
Additional details
Identifiers
- DOI
- 10.1016/j.jssc.2006.09.027;
- PII
- S0022-4596(06)00536-6;
Publishing Information
- Journal Title
- Journal of Solid State Chemistry
- Journal Volume
- 180
- Journal Issue
- 1
- Journal Page Range
- p. 113-118
- ISSN
- 0022-4596
- CODEN
- JSSCBI
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39037841
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- 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
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; IONS; LASER SPECTROSCOPY; NIOBIUM COMPOUNDS; REFRACTORY METAL COMPOUNDS; SELENIDES; SELENIUM COMPOUNDS; SPECTRA; SPECTROSCOPY; SYMMETRY GROUPS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.