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: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-432.322233
Energy at 298.15K-432.323577
HF Energy-432.322233
Nuclear repulsion energy44.373144
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 PBEPBE/STO-3G
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 3176 2902 1.43      
2 A1 1650 1507 4.85      
3 A1 1185 1083 5.45      
4 B1 990 905 21.06      
5 B2 3298 3013 19.99      
6 B2 1082 988 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 5690.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 5198.5 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 PBEPBE/STO-3G
ABC
9.80920 0.57978 0.54742

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.591
C2 0.000 0.000 -1.026
H3 0.000 0.923 -1.652
H4 0.000 -0.923 -1.652

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.61732.42552.4255
C21.61731.11541.1154
H32.42551.11541.8467
H42.42551.11541.8467

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 124.121 S1 C2 H4 124.121
H3 C2 H4 111.759
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.114      
2 C -0.261      
3 H 0.073      
4 H 0.073      


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 -0.639 0.639
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.458 0.000 0.000
y 0.000 -17.340 0.000
z 0.000 0.000 -16.454
Traceless
 xyz
x 0.439 0.000 0.000
y 0.000 -0.885 0.000
z 0.000 0.000 0.445
Polar
3z2-r20.890
x2-y20.883
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.723 0.000 0.000
y 0.000 0.913 0.000
z 0.000 0.000 3.108


<r2> (average value of r2) Å2
<r2> 29.533
(<r2>)1/2 5.434