Structural, thermal, and IR studies of β-[Nd2O2](CrO4), an unexpected analog of a slag phase [Ba2F2](S6+O3S2-)

Dmitri O. Charkin, Igor V. Plokhikh, Anastasiya I. Zadoya, Aleksandr N. Zaloga, Wulf Depmeier, Oleg I. Siidra

Research output

1 Citation (Scopus)

Abstract

A family of Ln 2CrO 6 (Ln=Pr, Nd, Sm-Tb) compounds has been re-investigated using powder X-ray diffraction and IR spectroscopy. The structure of β-Nd 2CrO 6β-[Nd 2O 2](CrO 4) is similar to that of the slag compound [Ba 2F 2](S 6+O 3S 2-) in that it exhibits a disordered arrangement of (CrO 4) 2- anions between [Nd 2O 2] 2+ litharge-type blocks. Its structural architecture is also related to other layered α- and γ-[Ln 2O 2](AO 4) species (A=S, Cr, Mo), showing various orientations of the tetrahedral anions within the interlayer space. Size relationships between the incorporated tetrahedral anions and formation of different structure types (denoted as M1-, M2- and T-type) are reviewed. The possible existence of new compounds which are isostructural with, or structurally related to, β-[Nd 2O 2](CrO 4) and bearing other transition metal-centred tetrahedral anions are discussed.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalZeitschrift fur Kristallographie - Crystalline Materials
Volume234
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

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slags
Slags
Anions
Negative ions
analogs
anions
Bearings (structural)
X ray powder diffraction
Transition metals
Infrared spectroscopy
interlayers
transition metals
Hot Temperature
diffraction
spectroscopy
x rays

Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

Cite this

Charkin, Dmitri O. ; Plokhikh, Igor V. ; Zadoya, Anastasiya I. ; Zaloga, Aleksandr N. ; Depmeier, Wulf ; Siidra, Oleg I. / Structural, thermal, and IR studies of β-[Nd2O2](CrO4), an unexpected analog of a slag phase [Ba2F2](S6+O3S2-). In: Zeitschrift fur Kristallographie - Crystalline Materials. 2019 ; Vol. 234, No. 1. pp. 1-8.
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abstract = "A family of Ln 2CrO 6 (Ln=Pr, Nd, Sm-Tb) compounds has been re-investigated using powder X-ray diffraction and IR spectroscopy. The structure of β-Nd 2CrO 6β-[Nd 2O 2](CrO 4) is similar to that of the slag compound [Ba 2F 2](S 6+O 3S 2-) in that it exhibits a disordered arrangement of (CrO 4) 2- anions between [Nd 2O 2] 2+ litharge-type blocks. Its structural architecture is also related to other layered α- and γ-[Ln 2O 2](AO 4) species (A=S, Cr, Mo), showing various orientations of the tetrahedral anions within the interlayer space. Size relationships between the incorporated tetrahedral anions and formation of different structure types (denoted as M1-, M2- and T-type) are reviewed. The possible existence of new compounds which are isostructural with, or structurally related to, β-[Nd 2O 2](CrO 4) and bearing other transition metal-centred tetrahedral anions are discussed.",
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Structural, thermal, and IR studies of β-[Nd2O2](CrO4), an unexpected analog of a slag phase [Ba2F2](S6+O3S2-). / Charkin, Dmitri O.; Plokhikh, Igor V.; Zadoya, Anastasiya I.; Zaloga, Aleksandr N.; Depmeier, Wulf; Siidra, Oleg I.

In: Zeitschrift fur Kristallographie - Crystalline Materials, Vol. 234, No. 1, 01.01.2019, p. 1-8.

Research output

TY - JOUR

T1 - Structural, thermal, and IR studies of β-[Nd2O2](CrO4), an unexpected analog of a slag phase [Ba2F2](S6+O3S2-)

AU - Charkin, Dmitri O.

AU - Plokhikh, Igor V.

AU - Zadoya, Anastasiya I.

AU - Zaloga, Aleksandr N.

AU - Depmeier, Wulf

AU - Siidra, Oleg I.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - A family of Ln 2CrO 6 (Ln=Pr, Nd, Sm-Tb) compounds has been re-investigated using powder X-ray diffraction and IR spectroscopy. The structure of β-Nd 2CrO 6β-[Nd 2O 2](CrO 4) is similar to that of the slag compound [Ba 2F 2](S 6+O 3S 2-) in that it exhibits a disordered arrangement of (CrO 4) 2- anions between [Nd 2O 2] 2+ litharge-type blocks. Its structural architecture is also related to other layered α- and γ-[Ln 2O 2](AO 4) species (A=S, Cr, Mo), showing various orientations of the tetrahedral anions within the interlayer space. Size relationships between the incorporated tetrahedral anions and formation of different structure types (denoted as M1-, M2- and T-type) are reviewed. The possible existence of new compounds which are isostructural with, or structurally related to, β-[Nd 2O 2](CrO 4) and bearing other transition metal-centred tetrahedral anions are discussed.

AB - A family of Ln 2CrO 6 (Ln=Pr, Nd, Sm-Tb) compounds has been re-investigated using powder X-ray diffraction and IR spectroscopy. The structure of β-Nd 2CrO 6β-[Nd 2O 2](CrO 4) is similar to that of the slag compound [Ba 2F 2](S 6+O 3S 2-) in that it exhibits a disordered arrangement of (CrO 4) 2- anions between [Nd 2O 2] 2+ litharge-type blocks. Its structural architecture is also related to other layered α- and γ-[Ln 2O 2](AO 4) species (A=S, Cr, Mo), showing various orientations of the tetrahedral anions within the interlayer space. Size relationships between the incorporated tetrahedral anions and formation of different structure types (denoted as M1-, M2- and T-type) are reviewed. The possible existence of new compounds which are isostructural with, or structurally related to, β-[Nd 2O 2](CrO 4) and bearing other transition metal-centred tetrahedral anions are discussed.

KW - chromates

KW - high temperature X-ray diffraction

KW - layered structures

KW - litharge-derivative structures

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