infrared spectrum of formaldehyde
zmatrix angstroms
  c
  o       1 1.200
  h       1 1.100     2 120.0
  h       1 1.100     2 120.0     3 180.0
end
runtype vibrations
econvergence 0.0000001
gconvergence 0.0001
potential becke
end
a-carbon (4,4;4,4)
a-oxygen (4,4;4,4)
a-hydrogen (3,1;3,1)
a-hydrogen (3,1;3,1)
o-carbon (7111/411/1*)
o-oxygen (7111/411/1*)
o-hydrogen (41/1*)
o-hydrogen (41/1*)
