SEARCH Articles Figures Tables Atomic orbitals open-shell configuration Molecular orbitals, open-shell molecules Molecular-orbital calculations ring opening Open Shell Atomic Beam Scattering and the Spin Orbit Dependence of Potential Energy Surfaces Open shell states with both spin and orbital angular momentum Open-shell molecular orbitals calculations Orbital correlation diagram cyclobutene, conrotatory ring opening Orbital correlation diagram cyclobutene, disrotatory ring opening Orbital interactions opening Periodic orbits open systems Spin-restricted open-shell Hartree-Fock ROHF) orbitals Stereoelectronic Effects in Action The Many Doors Opened by Orbital Interactions