Curvilinear coordinates

[1] W. Zou, D. Izotov, and D. Cremer, New Way of Describing Static and Dynamic Deformations of the Jahn-Teller Type in Ring Molecules, J. Phys. Chem. A 115, 8731 (2011).

[2] W. Zou, Y. Tao, D. Cremer, E. Kraka, Systematic description of molecular deformations with Cremer-Pople puckering and deformation coordinates utilizing analytic derivatives: applied to cycloheptane, cyclooctane, and cyclo[18]carbon, J. Chem. Phys. 152, 154107 (2020).

[3] W. Zou, Y. Tao, D. Cremer, E. Kraka, Describing Polytopal Rearrangements of Fluxional Molecules with Curvilinear Coordinates Derived from Normal Vibrational Modes - A Conceptual Extension of Cremer-Pople Puckering Coordinates, J. Chem. Theory Comput. 16, 3162-3193 (2020).