Note

This website is presently under development. The primary website for MOPAC is still http://openmopac.net until the majority of its contents have been migrated here.

HESSIAN

Print the Hessian in kcal/mol/Angstrom^2 from a geometry optimization. Keyword `EF <ef.html>`__ must also be present.

HESSIAN is useful in diagnostic work and as a source of a rough Hessian for other applications.