Lone-pair containment in closed cavities: The MTe6O13(M = Mn, Ni, Co) family of ternary oxides

John T.S.  Irvine; Magnus G.  Johnston; William T. A.  Harrison

doi:10.1039/b300573a

Lone-pair containment in closed cavities: The MTe6O13(M = Mn, Ni, Co) family of ternary oxides

John T.S. Irvine, Magnus G. Johnston, William T. A. Harrison

Chemistry

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The hydrothermal and ceramic syntheses, single crystal structures and some properties of MnTe6O13, NiTe6O13 and CoTe6O13, are described. These isostructural phases [space group R (3) over bar (No. 148) with a approximate to 10.2 Angstrom and c approximate to 19 Angstrom] contain a dense network of isolated MO6 (M = Mn, Ni, Co) octahedra, TeO4 folded squares and distorted TeO4+1 square-based pyramids, sharing vertices and edges by way of M-O-Te and Te-O-Te bonds. The Te-IV lone pairs are directed into closed cavities formed from 18 Te-centred and 6 MO6 groupings. Magnetic susceptibility data for MnTe6O13, and CoTe6O13 show antiferromagnetic ordering at ca. 13 and 21 K, respectively, which must occur via a superexchange pathway.

Original language	English
Pages (from-to)	2641-2645
Number of pages	5
Journal	Dalton Transactions
Issue number	13
DOIs	https://doi.org/10.1039/b300573a
Publication status	Published - 2003

Keywords

crystal structure
tellurite
valence

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title = "Lone-pair containment in closed cavities: The MTe6O13(M = Mn, Ni, Co) family of ternary oxides",

abstract = "The hydrothermal and ceramic syntheses, single crystal structures and some properties of MnTe6O13, NiTe6O13 and CoTe6O13, are described. These isostructural phases [space group R (3) over bar (No. 148) with a approximate to 10.2 Angstrom and c approximate to 19 Angstrom] contain a dense network of isolated MO6 (M = Mn, Ni, Co) octahedra, TeO4 folded squares and distorted TeO4+1 square-based pyramids, sharing vertices and edges by way of M-O-Te and Te-O-Te bonds. The Te-IV lone pairs are directed into closed cavities formed from 18 Te-centred and 6 MO6 groupings. Magnetic susceptibility data for MnTe6O13, and CoTe6O13 show antiferromagnetic ordering at ca. 13 and 21 K, respectively, which must occur via a superexchange pathway.",

keywords = "crystal structure, tellurite, valence",

author = "Irvine, {John T.S.} and Johnston, {Magnus G.} and Harrison, {William T. A.}",

year = "2003",

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T1 - Lone-pair containment in closed cavities

T2 - The MTe6O13(M = Mn, Ni, Co) family of ternary oxides

AU - Irvine, John T.S.

AU - Johnston, Magnus G.

AU - Harrison, William T. A.

PY - 2003

Y1 - 2003

N2 - The hydrothermal and ceramic syntheses, single crystal structures and some properties of MnTe6O13, NiTe6O13 and CoTe6O13, are described. These isostructural phases [space group R (3) over bar (No. 148) with a approximate to 10.2 Angstrom and c approximate to 19 Angstrom] contain a dense network of isolated MO6 (M = Mn, Ni, Co) octahedra, TeO4 folded squares and distorted TeO4+1 square-based pyramids, sharing vertices and edges by way of M-O-Te and Te-O-Te bonds. The Te-IV lone pairs are directed into closed cavities formed from 18 Te-centred and 6 MO6 groupings. Magnetic susceptibility data for MnTe6O13, and CoTe6O13 show antiferromagnetic ordering at ca. 13 and 21 K, respectively, which must occur via a superexchange pathway.

AB - The hydrothermal and ceramic syntheses, single crystal structures and some properties of MnTe6O13, NiTe6O13 and CoTe6O13, are described. These isostructural phases [space group R (3) over bar (No. 148) with a approximate to 10.2 Angstrom and c approximate to 19 Angstrom] contain a dense network of isolated MO6 (M = Mn, Ni, Co) octahedra, TeO4 folded squares and distorted TeO4+1 square-based pyramids, sharing vertices and edges by way of M-O-Te and Te-O-Te bonds. The Te-IV lone pairs are directed into closed cavities formed from 18 Te-centred and 6 MO6 groupings. Magnetic susceptibility data for MnTe6O13, and CoTe6O13 show antiferromagnetic ordering at ca. 13 and 21 K, respectively, which must occur via a superexchange pathway.

KW - crystal structure

KW - tellurite

KW - valence

U2 - 10.1039/b300573a

DO - 10.1039/b300573a

M3 - Article

SN - 1477-9226

SP - 2641

EP - 2645

JO - Dalton Transactions

JF - Dalton Transactions

IS - 13

ER -

Lone-pair containment in closed cavities: The MTe6O13(M = Mn, Ni, Co) family of ternary oxides

Abstract

Keywords

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