The quadrupole moment, rotational g factor and magnet&ability tensors of PF, were calculated at the SCF/CHF level in a basis of Gaussian functions, giving values (in au) of &0.561; x1= -17.687; ,Y~ = -14.45 1; g,=O.O719; g, =0.0768 (with the origin at the centre of mass). Electron correlation (estim
Electric and magnetic properties of the BrCl molecule
โ Scribed by P.W. Fowler; A.C. Legon; S.A. Peebles; E. Steiner
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 435 KB
- Volume
- 238
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Self-consistent-field calculations on BrCl in a basis of 212 uncontracted Gaussian functions reproduce the measured dipole moment, nuclear quadrupole and spin-rotation coupling constants to within a few percent. The calculated mean polarisability of 36.8 au is 7% smaller than the average of the measured values for Br2 and Cl2. Combination of the calculated diamagnetic nuclear shielding with the measured spin-rotation constant gives a value of 1627 ppm for the total shielding at bromine in BrCl.
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The dipole moment, quadrupole moment and dipole polarisability of 03 are calculated by the self-consistent field (SCF), many-body perturbation theory (MBPT), complete active space SCF (CASSCF), restricted active space SCF (RASSCF), multireference CI (MRCI) and CASSCF-perturbation theory (CASPT) meth
The generalised polarisabilities describing the response to an applied field of the electric field gradients at the nuclei of BrCl are calculated ab initio using the correlated CCSD(T) method with relativistic corrections estimated by the Douglas-Kroll 'no-pair' model. The magnitudes of 86.9 and 42.
Thoorics of mngnetic propcrtiee of motecules frequently employ the "gauge invariant" L1IO's first introduced by London. The bnsis for this choice of orbit& is reviewed, at the level OC approximate SCF theory, nnd the use of inappropriate gauge factors in previous work is pointed out. The invariance
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