%mem=1000MB
%chk=water_dimer_321g.chk
# opt hf/3-21g geom=connectivity

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0 1
 O                 -1.74354250   -0.40590405    0.00000000
 H                 -0.78354250   -0.40590405    0.00000000
 H                 -2.06399708    0.49903178    0.00000000
 O                 -2.69836952    1.78721020   -0.00143643
 H                 -3.61874290    2.00352598    0.16505779
 H                 -2.20385910    2.59390437   -0.16362137

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 4 5 1.0 6 1.0
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