CdCu{sub 3}(OH){sub 6}Cl{sub 2}: A new layered hydroxide chloride

Journal Article · Thu Dec 15 04:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.10.015· OSTI ID:21612834

Han, T H ^[1]; Freedman, D E ^[2]; Stephens, P W ^[3]; Lee, Y S ^[1]; Nocera, D G ^[2]

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1. Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307 (United States)
2. Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307 (United States)
3. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States)

A new transition metal hydroxide chloride containing kagome layers of magnetic ions, CdCu{sub 3}(OH){sub 6}Cl{sub 2}, has been synthesized and structurally characterized. The actual low symmetry P2{sub 1}/n structure can be derived from the ideal trigonal one with a change in cation distribution and coherent distortions of the anion framework. The result is a fundamentally different Cu{sup 2+} kagome framework than found in the related Herbertsmithite and Kapellasite minerals. Magnetization measurements show no transition to long range magnetic order above T=2 K, despite strong antiferromagnetic interactions with a Weiss temperature of {theta}{sub w}=-150 K. Furthermore, we show that the structure of CdCu{sub 3}(OH){sub 6}Cl{sub 2} and related hydroxide chlorides can be rationalized on the basis of [(OH){sub 3}Cl]{sup 4-} pseudopolyatomic anions that pack and rotate, in much the same way as do traditional polyatomic anions. This opens the door to rational design of new and useful hydroxide chloride materials. - Graphical Abstract: The [(OH){sub 3}Cl]{sup 4-} pseudopolyatomic anion and the kagome lattice of CdCu{sub 3}[(OH){sub 3}Cl]{sub 2}. Highlights: Black-Right-Pointing-Pointer A new understanding of hydroxide chlorides, based on the polyatomic anion [(OH){sub 3}Cl]{sup 4-}. Black-Right-Pointing-Pointer Synthesis and structure of a new layered hydroxide chloride, CdCu{sub 3}(OH){sub 6}Cl{sub 2}, are reported. Black-Right-Pointing-Pointer A new compound is reported with kagome layers of Cu{sup 2+}.

• OSTI ID: 21612834
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 12 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANIONS
ANTIFERROMAGNETISM
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
COPPER IONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
INTERACTIONS
IONS
LAYERS
MAGNETISM
MAGNETIZATION
MATERIALS
METALS
MINERALS
MONOCLINIC LATTICES
OXYGEN COMPOUNDS
SYMMETRY
SYNTHESIS
TRANSITION ELEMENTS