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Title: RE3Mo14O30 and RE2Mo 9O19, Two Reduced Rare-Earth Molybdates with Honeycomb-Related Structures (RE = La–Pr)

Journal Article · · Inorganic Chemistry

The previously unreported RE3Mo14O30 and RE2Mo9O19 phases were synthesized in vacuo from rare-earth oxides, molybdenum oxide, and molybdenum metal using halide fluxes at 875-1000 °C. Both phases adopt structures in the triclinic $$P\overline1$$ space group albeit with several notable differences. The structures display an ordering of layers along the a direction of the unit cell, forming distinct honeycomb-related lattice arrangements composed of MoO6 octahedra and vacancies. Mo-Mo bonding and clusters are present; the RE3Mo14O30 structure contains Mo dimers and rhomboid tetramers, while the RE2Mo9O19 structure contains rhomboid tetramers and an unusual arrangement of planar tetramers, pentamers, and hexamers. The magnetic measurements found the RE2Mo9O19phases to be simple paramagnets, while La3Mo14O30 was observed to order antiferromagnetically at 18 K. Finally, electrical resistivity measurements confirmed all of the samples to behave as nondegenerate semiconductors.

Research Organization:
Princeton Univ., NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-98ER45706
OSTI ID:
1595087
Journal Information:
Inorganic Chemistry, Vol. 57, Issue 7; ISSN 0020-1669
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (35)

Chevrel phases: Superconducting and normal state properties journal May 1978
Syntheses and Structural, Physical, and Theoretical Studies of the Novel Isostructural Mo9 Cluster Compounds Ag2.6CsMo9Se11, Ag4.1ClMo9Se11, and h-Mo9Se11 with Tunnel Structures journal January 2004
AgMo6Te6: Nouveau type structural unidimensionnel a chaiˆnes line´aires|Mo62|1∞ journal May 1987
Ternary molybdenum chalcogenides: A route to new extended clusters journal March 1985
High-Temperature Superconductors, the First Ternary System journal March 1972
The modulated structure of LaMo 8 O 14 journal June 1993
Structure of La4Mo2O11 containing isolated Mo2O10 cluster units journal November 1992
Sodium tetramolybdenum hexoxide (NaMo4O6). A metallic infinite-chain polymer derived by condensation of octahedral clusters journal July 1979
MTi 0.7 Mo 0.3 Mo 5 O 10 (M = Sr, Eu), First Evidence of Mono- and Bicapped Bioctahedral Mo 11 and Mo 12 Clusters:  Synthesis, Crystal Structures, and Physical Properties journal May 2001
Synthesis and physical properties of M4M′3Mo26O48 (M = Sr, Eu; M′ = Al, Ga) containing Mo7 clusters and infinite Mo7–Mo10–Mo7 chains journal August 1998
Pr 4 Mo 9 O 18 , an Atypical, Novel, Ternary Reduced Molybdenum Oxide Containing Unusual Mo 7 , Mo 13 , and Mo 19 Clusters. Synthesis, Crystal Structure, and Physical Properties journal November 1998
Superior Thermal Conductivity of Single-Layer Graphene journal March 2008
Graphene-based composite materials journal July 2006
Experimental observation of the quantum Hall effect and Berry's phase in graphene journal November 2005
Proximate Kitaev quantum spin liquid behaviour in a honeycomb magnet journal April 2016
III–nitrides: Growth, characterization, and properties journal February 2000
GaN, AlN, and InN: A review journal July 1992
Magnetic properties of the quasi-2d easy plane antiferromagnet BaNi2(PO4)2 journal February 1983
Magnetic properties of Mn2V2O7 single crystals journal February 2008
Superionic conduction in the solid-solution electrode AgCr S 2 journal August 1983
Interlayer tuning of electronic and magnetic properties in honeycomb ordered Ag3LiRu2O6 journal January 2010
New-Type Phase Transition of Li 2 RuO 3 with Honeycomb Structure journal March 2007
Topological Insulators in Ternary Compounds with a Honeycomb Lattice journal April 2011
Structures of β-ZrNCl and superconducting Li0.16ZrNCl: double honeycomb lattice superconductor journal September 1998
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal September 1976
Bond-valence parameters for solids journal April 1991
Superatomic crystal emerging in transition-metal oxides: Molybdenum hollandite K 2 Mo 8 O 16 journal December 2013
Synthesis, crystal structures, and properties of lithium zinc molybdenum oxide (LiZn2Mo3O8), zinc molybdenum oxide (Zn3Mo3O8), and scandium zinc molybdenum oxide (ScZnMo3O8), reduced derivatives containing the Mo3O13 cluster unit journal February 1985
Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices journal November 2016
Empirical parameters for calculating cation–oxygen bond valences journal July 1976
Significance tests on the crystallographic R factor journal May 1965
Synthesis, Crystal Structure, and Characterization of the New Ordered Hollandite-Type NdMo6O12 journal February 1998
Unusual magnetic properties of La5Mo4O16 journal March 2003
CRC Handbook of Chemistry and Physics book June 2016
Effects of spin-orbit splitting on the ground state of a Ce ion journal March 1985

Cited By (1)

HYDROTHERMAL SYNTHESIS OF RED PHOSPHOR La 2 (MoO 4 ) 3 DOPED WITH Eu3+ AND ITS APPLICATION FOR FERRIC IONS ASSAY journal September 2019