Table 1: H2S Dipole Moments
Level of Theory Dipole Moment (Debye), Experimental Dipole Moment (Debye), Accepted 1
AM1
1.85641

PM3
1.775390
1.775
3-21 G
1.390815
1.830
6-31 G
1.403603
1.866
DZV
1.374257
1.293

1 NIST Computational Chemistry Comparison and Benchmark Database
            http://cccbdb.nist.gov/