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EuI2, a Low-Temperature europium(II) Iodide Phase

EuI2, a Low-Temperature europium(II) Iodide Phase

Michael Krings, Michael Wessel, Richard Dronskowski

Acta Crystallogr C. 2009 Oct;65(Pt 10):i66-8.

PMID: 19805863

Abstract:

Light-yellow europium(II) diiodide, prepared by the low-temperature reaction of europium and ammonium iodide in liquid ammonia at 200 K and characterized by high-resolution X-ray powder diffraction, represents a new phase for EuI2 that adopts an orthorhombic Pnma structure with all three atoms lying on 4c positions (.m.). It is isotypic with SrI2(IV). Temperature-dependent X-ray measurements performed to investigate the thermal stability of the new phase show that it decomposes irreversibly to amorphous material around 673 K. Total-energy density-functional calculations using the generalized gradient approximation suggest this to be the ground-state structure of EuI2.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP22015356	Europium(II) iodide		22015-35-6	Price

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