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: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-437.359774
Energy at 298.15K-437.361156
HF Energy-437.359774
Nuclear repulsion energy43.780687
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 B3PW91/6-31G
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 3133 3000 16.21      
2 A1 1532 1467 3.19      
3 A1 1043 999 11.98      
4 B1 1046 1002 78.25      
5 B2 3238 3101 10.01      
6 B2 1040 996 9.87      

Unscaled Zero Point Vibrational Energy (zpe) 5515.5 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 5282.2 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 B3PW91/6-31G
ABC
9.75825 0.56078 0.53031

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.600
C2 0.000 0.000 -1.057
H3 0.000 0.926 -1.631
H4 0.000 -0.926 -1.631

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.65722.41552.4155
C21.65721.08921.0892
H32.41551.08921.8515
H42.41551.08921.8515

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 121.791 S1 C2 H4 121.791
H3 C2 H4 116.417
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.089      
2 C -0.515      
3 H 0.213      
4 H 0.213      


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 -2.145 2.145
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.594 0.000 0.000
y 0.000 -20.178 0.000
z 0.000 0.000 -17.411
Traceless
 xyz
x -0.799 0.000 0.000
y 0.000 -1.676 0.000
z 0.000 0.000 2.475
Polar
3z2-r24.949
x2-y20.585
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.713 0.000 0.000
y 0.000 2.478 0.000
z 0.000 0.000 5.986


<r2> (average value of r2) Å2
<r2> 31.406
(<r2>)1/2 5.604