21 Result(s)

Chapter and Conference Paper

Mössbauer Spectroscopy of Organometallic Compounds in Noncrystalline Matrices

The frozen-glassy-matrix technique has been employed in a study of the lattice dynamics of a number of organo-iron and organotin compounds, This technique has also been exploited in determining pos...

S. Chandra, R. H. Herber in Mössbauer Effect Methodology (1970)

Chapter

Application to Organometallic Compounds

Mössbauer spectroscopy, used in conjunction with the other spectroscopic methods which are normally employed in structure elucidation, such as infrared, nuclear magnetic resonance (NMR), and x-ray diffraction ...

R. H. Herber in An Introduction to Mössbauer Spectroscopy (1971)

Chapter and Conference Paper

Intermolecular Dynamics of Organotin Compounds from Mossbauer and Raman Spectroscopy

The correlation between chemical structure and the lattice dynamical behavior of the constituent atoms of a solid is of primary importance since those are two complementary aspects of bonding in solids. Howeve...

Y. Hazony, R. H. Herber in Mössbauer Effect Methodology (1973)

Article

Lattice dynamics of proton and gamma irradiated Nb₃Sn from temperature dependent¹¹⁹Sn Mossbauer studies

R. H. Herber, R. Kalish in Hyperfine Interactions (1978)

Chapter

Mössbauer Spectroscopy of Intercalation Compounds

Intercalation compounds are formed by reversible topotactic electron transfer reactions leading to the accommodation of guest species (atoms or molecules) into the van der Waals gaps of inorganic host matrices...

R. H. Herber, H. Eckert in Chemical Mössbauer Spectroscopy (1984)

Chapter

Lithium Insertion Compounds of the High and Low Temperature Polymorphs of LiFeSnO₄

The high temperature (HT) and low temperature (LT) polymorphs of LiFeSnO₄ with ramsdellite related structures undergo lithium insertion reactions with n-BuLi at ambient temperature to stoichiometries Li₂FeSnO₄(HT...

M. Greenblatt, E. Wang, H. Eckert, H. Kimura, R. H. Herber… in Solid State Batteries (1985)

Article

Lattice dynamical behaviour of Fe(II) spin crossover compounds from⁵⁷Fe Mössbauer spectroscopy

Temperature-dependent transmission Mössbauer spectroscopy was used to determine the Debye-Waller factors and hyperfine interaction parameters of the Fe(II) spin crossover complexes: Fe(phen)₂(NCS)₂, Fe(bipy)₂(NCS...

A. A. Yousif, R. H. Herber in Hyperfine Interactions (1987)

Article

Hyperfine interactions in the anisotropic layer compound FeOCl from⁵⁷Fe Mössbauer studies

The anisotropic layer compound FeOCl has been synthesized by two different techniques to give, respectively, a large single crystal blade-like product (SC) and a polycrystalline powder product (PC), each of wh...

R. H. Herber, A. Salmon in Hyperfine Interactions (1987)

Article

Mössbauer and exafs investigation of spin-equilibrium in a model-compound for heme proteins

We have used temperature dependent magnetic susceptibility, Mössbauer and EXAFS measurements to study the high spin (HS) — low spin (LS) conversion in Fe(II) (bptn) (NCS)₂, and we have combined consistently the i...

H. Winkler, A. Sawaryn, A. X. Trautwein, A. S. Yousif, C. Hermes… in Hyperfine Interactions (1988)

Article

Complementarity of Mössbauer, susceptibility, and FTIR characterization of spin-crossover compounds: Fe(II)l(pip)₂(NCS)₂l and related compounds

D. C. Figg, R. H. Herber in Hyperfine Interactions (1990)

Article

Hyperfine interactions and nuclear probes in chemistry: The active interface

A symposium entitled “Hyperfine Interaction and Nuclear Probes in Chemistry” was held in conjunction with the 198 th. National Meeting of the American Chemical Society in Miami Beach, Florida, 12 and 13 Septem...

R. H. Herber in Hyperfine Interactions (1990)

Article

Mössbauer studies related to the solid-state dynamics of C₆₀

C₆₀ (Buckminsterfullerene) is isolated from organic solvents above 260 K as an f.c.c. solid with complete orientational disorder. The rotational dynamics are diffuse and isotropic, with a short (12 ps) correlatio...

R. H. Herber, E. Bauminger, I. Felner in Il Nuovo Cimento D (1996)

Article

Valence averaging and phase transitions in europium (Eu₂VO₄) and iron (RSr₂Fe₃O₉) compounds

Mössbauer studies of ¹⁵¹Eu in Eu₂VO₄ reveal a very sharp valence averaging phase transition at 450 K. Two equally intense absorption lines, differing in isomer shift by 12.7 mm/s, corresponding to Eu²⁺ and Eu³⁺, ...

I. Nowik, R.H. Herber, I. Felner, V.P.S. Awana in Hyperfine Interactions (2000)

Article

Strong metal atom motion anomaly in iron-organometallics

Temperature-dependent ⁵⁷Fe Mössbauer effect studies have been carried out over the range 90 ⩽ T ⩽ 350 K on a number of ring-substituted ferrocenes and reveal that in the presence of certain molecular level archit...

R.H. Herber, I. Nowik in Hyperfine Interactions (2000)

Chapter and Conference Paper

High-Pressure ⁵⁷Fe Mössbauer Spectroscopy of Octamethyl-Ethynyl-Ferrocene

High-pressure ⁵⁷Fe Mössbauer measurements of octamethyl-ethynyl-ferrocene (OMFA) were performed using a diamond anvil cell (DAC) in order to clarify the pressure effects on the phase transition occurring at ~248 ...

T. Suenaga, S. Nasu, T. Kawakami, R. H. Herber in ICAME 2003 (2004)

Article

High-Pressure ⁵⁷Fe Mössbauer Spectroscopy of Octamethyl-Ethynyl-Ferrocene

High-pressure ⁵⁷Fe Mössbauer measurements of octamethyl-ethynyl-ferrocene (OMFA) were performed using a diamond anvil cell (DAC) in order to clarify the pressure effects on the phase transition occurring at ∼248 ...

T. Suenaga, S. Nasu, T. Kawakami, R. H. Herber in Hyperfine Interactions (2004)

Article

Quadrupole Hyperfine Interaction and Magnetic Hyperfine Field in FeOCl and Its Intercalates

FeOCl is a layered compound belonging to the orthorhombic space group P_mnm (D _2h ¹³ ), with two formula units per unit cell. Adjacent layers in the (010) crystallogra...

Y. Maeda, R. H. Herber in MRS Online Proceedings Library (2011)

Article

Radiation Damage Studies of USn₃

Uranium stannide, the most stable intermetallic compound in the Uranium/Sn system, has the Cu₃Au(LI₂) structure, and is paramagnetic to liquid He temperature. The magnetic susceptibility data are consistent with ...

T. K. McGuire, R. H. Herber in MRS Online Proceedings Library (2011)