Static higher polarisabilities of H₂⁺

Using single and cube perturbation theory, all the independent hyperpolarisabilities, quadrupole and field-gradient quadrupole polarisabilities of H2+ are determined for internuclear separations from 0.2 to 10.0 Bohr. The results are considered to have converged to at least five significant figures. This is the first such molecular calculation of its kind and the first time the static higher polarisabilities of H2+ have been determined.