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Journal of Sol-Gel Science and Technology

, Volume 32, Issue 1–3, pp 25–29 | Cite as

Synthesis, Structure and Properties of ErNb2(OPr i )13

  • Mikael Kritikos
  • Gunnar Westin
Article

Abstract

The molecular alkoxide, ErNb2(OPr i )13 was prepared by metathesis with 2KNb(OPr i )6, KOPr i and ErCl3, and structurally determined by single-crystal X-ray diffraction techniques. Each molecule contains a central Er3+-ion coordinated by six OPr i groups of which one is terminal. On each side is an Nb5+-ion coordinated by six OPr i groups placed, one via a double alkoxo-bridge and the other via a triple alkoxo-bridge. It is isostructural with LaNb2(OPr i )13, in spite of the large difference in ionic radius between Er3+ and La3+ (16%). The compound was characterized by its IR- and UV-vis-NIR-spectroscopic fine structures, and found to be structurally intact in hexane:isopropanol solution.

Keywords

Er-alkoxide IR spectroscopy electronic spectroscopy sol–gel precursor structure 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  1. 1.Department of Structural Chemistry, Arrhenius LaboratoryStockholm UniversityStockholmSweden
  2. 2.Department of Materials Chemistry, Ångström LaboratoryUppsala UniversityUppsalaSweden

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