Synthesis and structure of new double oxides of mercury and rare earth elements: R2HgO4 (R =La, Nd, Sm, Eu, and Gd)

Sergej Putilin, Ingrid Bryntse, Marina Rozova

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

New double oxides with mercury and five rare earth elements, R2HgO4 (R =La, Nd, Sm, Eu, and Gd), were synthesized and characterized by X-ray powder diffraction, EDS analysis, electron microscopy, and thermal analysis. They all have the structure which was determined for one of the compounds, Nd2HgO4, from powder diffractometer data. Nd2HgO4 has a monoclinic unit cell, space group C2/m, Z = 4, and the cell parameters a = 13.8737(8)Å, b = 3.7936(4)Å, c = 10.240(2)Å, and β = 121.200(9)°. The mercury atoms are linearly coordinated to two oxygen atoms, and the two independent neodymium atoms coordinate seven oxygen atoms, which form polyhedra of slightly different shapes and sizes.

Original languageEnglish
Pages (from-to)236-243
Number of pages8
JournalJournal of Solid State Chemistry
Volume93
Issue number1
DOIs
Publication statusPublished - Jul 1991
Externally publishedYes

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