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/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 PBEPBE/6-31G
 hartrees
Energy at 0K-437.185521
Energy at 298.15K-437.186884
HF Energy-437.185521
Nuclear repulsion energy43.432309
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/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 3044 3002 20.73      
2 A1 1488 1467 4.92      
3 A1 1007 993 10.31      
4 B1 1005 991 73.70      
5 B2 3145 3102 14.58      
6 B2 1009 995 10.66      

Unscaled Zero Point Vibrational Energy (zpe) 5349.5 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 5275.6 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/6-31G
ABC
9.60528 0.55192 0.52193

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.605
C2 0.000 0.000 -1.065
H3 0.000 0.933 -1.645
H4 0.000 -0.933 -1.645

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.67032.43562.4356
C21.67031.09841.0984
H32.43561.09841.8662
H42.43561.09841.8662

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 121.841 S1 C2 H4 121.841
H3 C2 H4 116.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.088      
2 C -0.492      
3 H 0.202      
4 H 0.202      


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 -2.056 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.573 0.000 0.000
y 0.000 -20.248 0.000
z 0.000 0.000 -17.475
Traceless
 xyz
x -0.712 0.000 0.000
y 0.000 -1.724 0.000
z 0.000 0.000 2.436
Polar
3z2-r24.872
x2-y20.675
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.735 0.000 0.000
y 0.000 2.545 0.000
z 0.000 0.000 5.987


<r2> (average value of r2) Å2
<r2> 31.746
(<r2>)1/2 5.634