return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2CS (Thioformaldehyde)

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-437.426848
Energy at 298.15K-437.428208
HF Energy-437.426848
Nuclear repulsion energy44.186955
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at BLYP/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2993 2970 34.15      
2 A1 1471 1459 10.16      
3 A1 1038 1030 12.66      
4 B1 989 981 42.41      
5 B2 3075 3052 15.08      
6 B2 984 976 6.43      

Unscaled Zero Point Vibrational Energy (zpe) 5274.7 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 5234.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at BLYP/6-31G**
ABC
9.67866 0.57412 0.54197

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.594
C2 0.000 0.000 -1.040
H3 0.000 0.930 -1.628
H4 0.000 -0.930 -1.628

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.63372.40812.4081
C21.63371.09981.0998
H32.40811.09981.8591
H42.40811.09981.8591

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 122.303 S1 C2 H4 122.303
H3 C2 H4 115.393
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.031      
2 C -0.248      
3 H 0.139      
4 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.822 1.822
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.382 0.000 0.000
y 0.000 -20.216 0.000
z 0.000 0.000 -17.147
Traceless
 xyz
x -0.700 0.000 0.000
y 0.000 -1.951 0.000
z 0.000 0.000 2.652
Polar
3z2-r25.303
x2-y20.834
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.984 0.000 0.000
y 0.000 2.880 0.000
z 0.000 0.000 5.926


<r2> (average value of r2) Å2
<r2> 30.970
(<r2>)1/2 5.565