Comment on ‘‘Four-parameter exactly solvable potential for diatomic molecules’’

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Abstract
This Comment precludes any chance of discovering a new potential that would allow one to solve the one-dimensional Schrödinger equation in terms of hypergeometric functions. In particular, it argues that the potential function suggested by Hua [Phys. Rev. A 42, 2524 (1990)] is the well-known Tietz potential, which in turn is a combination of the Rosen-Morse, Morse, and Manning-Rosen potentials presented in a common form.