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: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-435.328236
Energy at 298.15K-435.329630
HF Energy-435.328236
Nuclear repulsion energy44.723722
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 B3PW91/3-21G*
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 3082 2957 23.67      
2 A1 1546 1484 4.79      
3 A1 1111 1066 16.15      
4 B1 1050 1007 68.79      
5 B2 3165 3036 9.43      
6 B2 1042 1000 8.04      

Unscaled Zero Point Vibrational Energy (zpe) 5498.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 5274.9 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 B3PW91/3-21G*
ABC
9.82700 0.58904 0.55573

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.586
C2 0.000 0.000 -1.026
H3 0.000 0.923 -1.611
H4 0.000 -0.923 -1.611

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.61192.38272.3827
C21.61191.09241.0924
H32.38271.09241.8451
H42.38271.09241.8451

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 122.379 S1 C2 H4 122.379
H3 C2 H4 115.243
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.044      
2 C -0.536      
3 H 0.246      
4 H 0.246      


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 -1.780 1.780
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.598 0.000 0.000
y 0.000 -20.164 0.000
z 0.000 0.000 -17.061
Traceless
 xyz
x -0.985 0.000 0.000
y 0.000 -1.834 0.000
z 0.000 0.000 2.820
Polar
3z2-r25.639
x2-y20.566
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.720 0.000 0.000
y 0.000 2.549 0.000
z 0.000 0.000 5.625


<r2> (average value of r2) Å2
<r2> 30.531
(<r2>)1/2 5.525