Gaussian formatted checkpoint file format (fchk, fch, fck) — Open Babel v2.3.0 documentation

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# Gaussian formatted checkpoint file format (fchk, fch, fck)

A formatted text file containing the results of a Gaussian calculation

Currently supports reading molecular geometries from fchk files. More to come.

Note

This is a read-only format.

## Read Options

`s` | Single bonds only
`b` | No bond perception

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