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: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-436.518900
Energy at 298.15K-436.520323
HF Energy-436.518900
Nuclear repulsion energy45.292887
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 HF/6-31G(2df,p)
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 3251 2944 26.09      
2 A1 1623 1469 7.50      
3 A1 1179 1068 39.09      
4 B1 1160 1050 38.51      
5 B2 3343 3027 3.26      
6 B2 1074 972 1.89      

Unscaled Zero Point Vibrational Energy (zpe) 5813.9 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 5264.5 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 HF/6-31G(2df,p)
ABC
10.01886 0.60454 0.57014

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.578
C2 0.000 0.000 -1.013
H3 0.000 0.914 -1.588
H4 0.000 -0.914 -1.588

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.59172.35092.3509
C21.59171.07921.0792
H32.35091.07921.8273
H42.35091.07921.8273

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 122.154 S1 C2 H4 122.154
H3 C2 H4 115.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.163      
2 C -0.216      
3 H 0.190      
4 H 0.190      


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 -2.168 2.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.813 0.000 0.000
y 0.000 -20.413 0.000
z 0.000 0.000 -16.803
Traceless
 xyz
x -1.205 0.000 0.000
y 0.000 -2.104 0.000
z 0.000 0.000 3.309
Polar
3z2-r26.619
x2-y20.600
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.581 0.000 0.000
y 0.000 3.233 0.000
z 0.000 0.000 6.053


<r2> (average value of r2) Å2
<r2> 30.097
(<r2>)1/2 5.486