Spin—Spin Coupling in Magnetically Condensed Complexes. XII. The Ground State of Tetrakis (N, N′‐dimethylglyoximato) dicopper (II)

1971 ◽  
Vol 55 (10) ◽  
pp. 4758-4762 ◽  
Author(s):  
Juan F. Villa ◽  
William E. Hatfield
Keyword(s):  
Ground State ◽  
Spin Coupling ◽  
Spin Spin Coupling ◽  
Condensed Complexes

Orbital ground state, crystal field splittings, and magnetic hyperfine interactions in iron(II) fluorosulphate

1977 ◽  
Vol 55 (1) ◽  
pp. 115-121 ◽  
Author(s):  
John R. Sams ◽  
Robert C. Thompson ◽  
Tsang Bik Tsin
Keyword(s):  
Crystal Field ◽  
Ground State ◽  
Hyperfine Interactions ◽  
Excited Level ◽  
Quadrupole Coupling Constant ◽  
Spin Coupling ◽  
Rhombic Distortion ◽  
Constant E ◽  
Jahn Teller ◽  
Spin Spin Coupling

Magnetic susceptibilities between 80 and 300 K and 57Fe Mössbauer parameters between 4.2 and 295 K are reported for Fe(SO3F)2. These data have been analysed via a crystal field model including spin–orbit and spin–spin coupling. The compound is trigonally distorted by an elongation along the [111] axis of the FeO6 octahedron, and the ground state is the orbital doublet [Formula: see text]. The quadrupole coupling constant e2qQ is positive, and no rhombic distortion could be detected. The electronic spectrum shows a splitting of the 5Eg excited level, presumably by a dynamic Jahn–Teller effect, and [Formula: see text] Attempts to fit a low-temperature magnetic perturbation Mössbauer spectrum using a pseudo-spin Hamiltonian were only partially successful, but suggest that the g tensor is highly anisotropic with [Formula: see text] and that the internal hyperfine field is small. Spin relaxation in Fe(SO3F)2 is fast at all temperatures down to 4.2 K and in applied magnetic fields of up to 5.0 T.

Vibrational and thermal averaging of the indirect nuclear spin-spin coupling constants of CH4, SiH4, GeH4 and SnH4

1997 ◽  
Vol 91 (5) ◽  
pp. 897-907 ◽  
Author(s):  
SHEELA KIRPEKAR ◽  
THOMAS ENEVOLDSEN ◽  
JENS ODDERSHEDE ◽  
WILLIAM RAYNES
Keyword(s):  
Nuclear Spin ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling
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