Gaussian 03 Online Manual
Last update: 2 October 2006

Multiple Gaussian jobs may be combined within a single input file. The input for each successive job is separated from that of the preceding job step by a line of the form:


Here is an example input file containing two job steps:

# HF/6-31G(d) Freq 
Frequencies at STP 

Molecule specification 

# HF/6-31G(d) Geom=Check Guess=Read Freq=(ReadFC,ReadIsotopes) 

Frequencies at 300 K 

charge and spin 
300.0 2.0 
Isotope specifications

This input file computes vibrational frequencies and performs thermochemical analysis at two different temperatures and pressures: first at 298.15 K and 1 atmosphere, and then again at 300 K and 2 atmospheres. Note that a blank line must precede the --Link1-- line.