A> spin-orbit coupling constant

In ruthenocene it also proved possible at 77 K to resolve the broad band containing the 12+ -> 1n, and 1Z+ -+ x4> transitions, but as for Fe(Cp)2 only one spin-forbidden d-d band, assigned as shown in Table 11, could be found, despite a spin-orbit coupling constant of the order of 1 kK. Note that although the 3I1 (on S4), 34 (o2 tr 5 3), and 3II (o2 n 6 3) levels are predicted (81) to be split by , %, and 31, respectively, abnormally large band widths would not be anticipated since only one component of each triplet level is capable of mixing with the nearby singlet states. 

The final result in (8.214) is obtained by putting A2 = 1. The constant A is half the sum of a spin-orbit coupling constant A ] and a spin other-orbit coupling constant A2,... 

A comparable temperature dependence of resistivity was obtained for a mixed phase sample of Cel2. The formation of apparently metallic phases for only the iodides of five lanthanide and actinide elements is considered in terms of the stoichiometry, the electronic structure of the cation, the possible nature of the band, and the role of the anion. In contrast, the intermediate Lai2.1,2 phase exhibits semiconduction. Its magnetic data between 80° and 300° K. can be best accounted for if the reduced component is considered to be La ", [Xe]5d with a ground term, a spin-orbit coupling constant A — 050 cm. and only small covalency and asymmetry parameters. 

The energies of the magnetic interaction of orbital and spin angular momenta are —A and +A/2 in the atomic ion, while they are —A/2, 0, and +A/2 in the molecular ion. Here, A is a spin-orbit coupling constant in the ground state of atomic ion. An additional off-diagonal matrix element arises in the molecular ion from the microscopic spin-orbit operator... 

Karraker measured the electronic absorption spectrum of dimeric uranium penta-ethoxide and the weak narrow bands observed at 5405, 5680, 6622, 6934, 10200, 11 690, and 14 490 cm" have been assigned to f-f transitions for a distorted octahedral f system with a spin-orbit coupling constant of 1905 cm. ... 

R chemical symbol for rare earth. A spin orbit coupling constant... 

It was possible to maintain a solution of Os(III) and Os(IV) at a constant ratio for several hours in both LiCl-KCl and BiClg provided the temperature was below 500°C (Fig. 42) and the Os (III) spectrum was obtained by subtraction. A distorted octahedral geometry was postulated and a spin-orbital coupling constant of 2.7 kK estimated. 

Figure 5, Low-eriergy vibronic spectrum in a electronic state of a linear triatomic molecule. The parameter c determines the magnitude of splitting of adiabatic bending potential curves, is the spin-orbit coupling constant, which is assumed to be positive. The zero on the...

Self-inductance L Spin orbit coupling constant A... 

Figure A The variation with temperature and spin-orbit coupling constant, of the magnetic moments of octahedral, low-spin, d" ions, (The values of at 300 K are marked for individual ions).

Fig. 2. Temperature dependence of the HS fraction % according to the Ising model. The employed parameter values are = 150 K, Aj = Aj = 500 cm and X = — 100 em h Here, Aj and Aj are the orbital energy differences between the and levels and between the Bj and levels, respectively, X being the spin-orbit coupling constant. The model parameters A, Aj, and X determine the value of AG. The levels result from the HS iron(II) ground state in orthorhombic symmetry according to Bj -1- B2 + B. The figures on the curves specify the values of...

The only term which has non vanishing matrix elements with both A g and T2g terms is the arising from the electron configuration t gSg- If the spin-orbit coupling constant is denoted with the matrix elements are [126] ... 

From measurements of this type Thomaz and Stevens found a linear relationship for a graph of log(kJrPC,2) vs. where n is the number of halogen atoms in the molecule, is the spin-orbit coupling constant, and Em is the polarographic half-wave reduction potential of the heavy-atom quencher (Figure 5.16). This correlation suggests that an exciplex is formed by partial... 

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