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: SVWN/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 SVWN/6-31+G**
 hartrees
Energy at 0K-475.295683
Energy at 298.15K-475.300094
HF Energy-475.295683
Nuclear repulsion energy101.236056
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 SVWN/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 3065 3020 10.67      
2 A1 1440 1419 3.62      
3 A1 1151 1134 2.83      
4 A1 1006 991 2.79      
5 A1 667 657 20.31      
6 A2 3150 3103 0.00      
7 A2 1138 1121 0.00      
8 A2 867 854 0.00      
9 B1 3162 3115 1.34      
10 B1 927 913 6.02      
11 B1 811 799 1.56      
12 B2 3066 3020 7.08      
13 B2 1408 1387 2.48      
14 B2 1028 1013 45.90      
15 B2 696 685 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 11789.6 cm-1
Scaled (by 0.9851) Zero Point Vibrational Energy (zpe) 11614.0 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 SVWN/6-31+G**
ABC
0.73630 0.36145 0.26902

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.739 -0.791
C3 0.000 -0.739 -0.791
H4 -0.923 1.256 -1.078
H5 0.923 1.256 -1.078
H6 0.923 -1.256 -1.078
H7 -0.923 -1.256 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81141.81142.48922.48922.48922.4892
C21.81141.47751.09641.09642.21682.2168
C31.81141.47752.21682.21681.09641.0964
H42.48921.09642.21681.84613.11782.5125
H52.48921.09642.21681.84612.51253.1178
H62.48922.21681.09643.11782.51251.8461
H72.48922.21681.09642.51253.11781.8461

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.931 S1 C2 H4 115.549
S1 C2 H5 115.549 S1 C3 C2 65.931
S1 C3 H6 115.549 S1 C3 H7 115.549
C2 S1 C3 48.138 C2 C3 H6 118.165
C2 C3 H7 118.165 C3 C2 H4 118.165
C3 C2 H5 118.165 H4 C2 H5 114.684
H6 C3 H7 114.684
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.005      
2 C -0.437      
3 C -0.437      
4 H 0.220      
5 H 0.220      
6 H 0.220      
7 H 0.220      


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 -2.059 2.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.406 0.000 0.000
y 0.000 -24.557 0.000
z 0.000 0.000 -26.751
Traceless
 xyz
x -0.752 0.000 0.000
y 0.000 2.022 0.000
z 0.000 0.000 -1.270
Polar
3z2-r2-2.540
x2-y2-1.849
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.210 0.000 0.000
y 0.000 5.575 0.000
z 0.000 0.000 7.017


<r2> (average value of r2) Å2
<r2> 56.518
(<r2>)1/2 7.518