Affordable Access

Access to the full text

Nanostructuring in the process of the formation of mixed-anion compounds: Rare-earth borogermanates, germanophosphates, and borotungstates

Authors
  • Bandurkin, G. A.1
  • Chudinova, N. N.1
  • Lysanova, G. V.1
  • Palkina, K. K.1
  • Murashova, E. V.1
  • Krut’ko, V. A.1
  • Balagina, G. M.1
  • 1 Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry, Leninskii pr. 31, Moscow, 119991, Russia , Moscow (Russia)
Type
Published Article
Journal
Russian Journal of Inorganic Chemistry
Publisher
Nauka/Interperiodica
Publication Date
Feb 01, 2006
Volume
51
Issue
2
Pages
292–305
Identifiers
DOI: 10.1134/S0036023606020185
Source
Springer Nature
Keywords
License
Yellow

Abstract

Specific features of the textures (the preferred orientation of the nanometer building blocks) in the structures of mixed-anion compounds—rare-earth borogermanates, germanophosphates, and borotungstates that arise from the acid-base interaction in the Ln2O3-B2O3-GeO2, Ln2O3-GeO2-P2O5, and Ln2O3-B2O3-WO3 systems (Ln = La-Gd)—have been studied. Based on characteristic texture traits, the mixed-anion compounds of early rare-earth elements can be divided into three groups: (i) Ln2O3: ExOy > 1, (ii) Ln2O3: ExOy = 1, and (iii) Ln2O3: ExOy < 1. Because of the dominant structural effect of the basic oxide Ln2O3 in the compounds of the first group, the structures of Nd14O8(BO3)6(GeO4)2 and Pr11O10(GeO4)(PO4)3 are composed of infinite [LnOn] bands and layers and discrete groups [EOm] located in the interband and interlayer spaces. The dominant structural effect of the acid oxides [ExOy] in the compounds of the third group leads to the appearance of ring textures composed of [LnOn], as well as to the appearance of chains and networks composed of [EOm], in the structures of Ln(BGeO5) and Ln(BO2)(WO4).

Report this publication

Statistics

Seen <100 times