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: B2PLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31+G**
 hartrees
Energy at 0K-437.263454
Energy at 298.15K-437.264840
HF Energy-437.174022
Nuclear repulsion energy44.575210
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 B2PLYP/6-31+G**
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 3125 2976 26.08      
2 A1 1531 1459 6.77      
3 A1 1079 1028 8.90      
4 B1 1039 990 52.73      
5 B2 3216 3063 6.57      
6 B2 1030 981 6.78      

Unscaled Zero Point Vibrational Energy (zpe) 5509.8 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 5247.5 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 B2PLYP/6-31+G**
ABC
9.82722 0.58428 0.55149

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.588
C2 0.000 0.000 -1.032
H3 0.000 0.923 -1.610
H4 0.000 -0.923 -1.610

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.62042.38382.3838
C21.62041.08851.0885
H32.38381.08851.8450
H42.38381.08851.8450

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 122.055 S1 C2 H4 122.055
H3 C2 H4 115.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.125      
2 C -0.223      
3 H 0.174      
4 H 0.174      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.564 0.000 0.000
y 0.000 3.481 0.000
z 0.000 0.000 6.368


<r2> (average value of r2) Å2
<r2> 30.917
(<r2>)1/2 5.560