SEARCH Articles Figures Tables 2-methyl-2-butyl cation, rotation D 2-methyl-, specific rotation D-Labelled Methyl Radicals Nuclear Spin-Rotation Couplings Enones methyl group rotation Methyl ethers optical rotation Methyl group rotation Methyl group rotational tunneling Methyl groups hindered rotation potential Methyl rotational tunnelling Relaxation methyl group rotation Silanes methyl, rotational barrier Spin lattice methyl rotation