Relativistic electron Relativistic effects 10 Tensors 10 Magnetic shielding 8 Molecular dynamics 8 Nuclear magnetic shieldings 8 Stereochemistry 8 Molecular Hamiltonian 6 Relativity 6 Approximation algorithms 4 Born-Oppenheimer 4 Bromine compounds 4 Chlorine compounds 4 Correlation effect 4 Linear response 4 Molecular rotations 4 Numerical results 4 Perturbative expansion 4 Quantitative result 4 Random phase approximations 4 Small components 4 Spectral parameters 4 Spin dynamics 4 Spin-rotations 4 Theoretical expression 4 Theoretical study 4 X rays 4 Yield differences 4 Acceleration mechanisms 2 Arches 2