Internal rotation and phase transitions in lanthanum tetrahydroborates
Journal Article
·
· J. Struct. Chem. (Engl. Transl.); (United States)
Using the /sup 1/H, /sup 11/B, /sup 139/La NMR and relaxation NMR methods, we have investigated the molecular dynamics in La(BH/sub 4/)/sub 3/ and its adduct with tetrahydrofuran La(BH/sub 4/)/sub 3/ x 3THF. We have observed phase transitions connected with the change in the nature of the internal rotation (reorientation) of the BH/sub 4//sup -/ anions. We have determined the barrier to reorientation of the BH/sub 4//sup -/ anions and the THF molecules in the investigated compounds, and we have shown that the change in the mobility of the THF molecule does not lead to a phase transition.
- OSTI ID:
- 6480239
- Journal Information:
- J. Struct. Chem. (Engl. Transl.); (United States), Journal Name: J. Struct. Chem. (Engl. Transl.); (United States) Vol. 29:1; ISSN JSTCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural and reorientational dynamics of tetrahydroborate (BH4-) and tetrahydrofuran (THF) in a Mg(BH4)2ยท3THF adduct: neutron-scattering characterization
Structural and Reorientational Dynamics of Tetrahydroborate (BH4-) and Tetrahydrofuran (THF) in a Mg(BH4)2 3THF Adduct: Neutron-Scattering Characterization
Spectroscopic properties of rare earth borohydrides: Er(BH/sub 4/)/sub 3/-3THF in pure and mixed crystals. Technical report No. 7, 1 Jan--1 Jun 1975
Journal Article
·
Tue Dec 31 23:00:00 EST 2019
· Physical Chemistry Chemical Physics. PCCP
·
OSTI ID:1645013
Structural and Reorientational Dynamics of Tetrahydroborate (BH4-) and Tetrahydrofuran (THF) in a Mg(BH4)2 3THF Adduct: Neutron-Scattering Characterization
Journal Article
·
Tue Nov 19 23:00:00 EST 2019
· Physical Chemistry Chemical Physics
·
OSTI ID:1581496
Spectroscopic properties of rare earth borohydrides: Er(BH/sub 4/)/sub 3/-3THF in pure and mixed crystals. Technical report No. 7, 1 Jan--1 Jun 1975
Technical Report
·
Thu Jun 12 00:00:00 EDT 1975
·
OSTI ID:7349422
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADDUCTS
BOROHYDRIDES
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
COUPLING CONSTANTS
DIPOLE MOMENTS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROGEN 1
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM 139
LANTHANUM COMPOUNDS
LANTHANUM ISOTOPES
LIGHT NUCLEI
MAGNETIC DIPOLE MOMENTS
MAGNETIC MOMENTS
NMR SPECTRA
NUCLEI
ODD-EVEN NUCLEI
ORDER-DISORDER TRANSFORMATIONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUADRUPOLE MOMENTS
RARE EARTH COMPOUNDS
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RELAXATION
RELAXATION TIME
SPECTRA
SPIN-LATTICE RELAXATION
STABLE ISOTOPES
SYMMETRY
TETRAHYDROFURAN
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADDUCTS
BOROHYDRIDES
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
COUPLING CONSTANTS
DIPOLE MOMENTS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROGEN 1
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM 139
LANTHANUM COMPOUNDS
LANTHANUM ISOTOPES
LIGHT NUCLEI
MAGNETIC DIPOLE MOMENTS
MAGNETIC MOMENTS
NMR SPECTRA
NUCLEI
ODD-EVEN NUCLEI
ORDER-DISORDER TRANSFORMATIONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUADRUPOLE MOMENTS
RARE EARTH COMPOUNDS
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RELAXATION
RELAXATION TIME
SPECTRA
SPIN-LATTICE RELAXATION
STABLE ISOTOPES
SYMMETRY
TETRAHYDROFURAN
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE