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 C2H4S (Thiirane)

using model chemistry: wB97X-D/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-476.694449
Energy at 298.15K-476.698856
HF Energy-476.694449
Nuclear repulsion energy98.413684
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 wB97X-D/SDD
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 3209 3209 9.80      
2 A1 1527 1527 0.23      
3 A1 1165 1165 0.78      
4 A1 1084 1084 8.34      
5 A1 608 608 24.28      
6 A2 3311 3311 0.00      
7 A2 1223 1223 0.00      
8 A2 910 910 0.00      
9 B1 3325 3325 11.85      
10 B1 947 947 4.35      
11 B1 867 867 3.88      
12 B2 3202 3202 13.19      
13 B2 1503 1503 9.49      
14 B2 1123 1123 70.59      
15 B2 617 617 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 12310.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12310.6 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 wB97X-D/SDD
ABC
0.72888 0.32982 0.24979

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.906
C2 0.000 0.745 -0.840
C3 0.000 -0.745 -0.840
H4 -0.915 1.262 -1.102
H5 0.915 1.262 -1.102
H6 0.915 -1.262 -1.102
H7 -0.915 -1.262 -1.102

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.89801.89802.54192.54192.54192.5419
C21.89801.49061.08311.08312.22162.2216
C31.89801.49062.22162.22161.08311.0831
H42.54191.08312.22161.83023.11782.5241
H52.54191.08312.22161.83022.52413.1178
H62.54192.22161.08313.11782.52411.8302
H72.54192.22161.08312.52413.11781.8302

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.879 S1 C2 H4 114.203
S1 C2 H5 114.203 S1 C3 C2 66.879
S1 C3 H6 114.203 S1 C3 H7 114.203
C2 S1 C3 46.242 C2 C3 H6 118.495
C2 C3 H7 118.495 C3 C2 H4 118.495
C3 C2 H5 118.495 H4 C2 H5 115.314
H6 C3 H7 115.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.032      
2 C -0.546      
3 C -0.546      
4 H 0.265      
5 H 0.265      
6 H 0.265      
7 H 0.265      


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 -2.564 2.564
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.882 0.000 0.000
y 0.000 -24.247 0.000
z 0.000 0.000 -26.664
Traceless
 xyz
x -0.426 0.000 0.000
y 0.000 2.026 0.000
z 0.000 0.000 -1.600
Polar
3z2-r2-3.200
x2-y2-1.635
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.413 0.000 0.000
y 0.000 5.001 0.000
z 0.000 0.000 6.622


<r2> (average value of r2) Å2
<r2> 58.821
(<r2>)1/2 7.670