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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.172558
Energy at 298.15K-476.177006
HF Energy-475.604451
Nuclear repulsion energy101.023570
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 MP4/6-311+G(3df,2p)
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 3130 2954        
2 A1 1501 1417        
3 A1 1140 1076        
4 A1 1046 987        
5 A1 641 605        
6 A2 3218 3037        
7 A2 1194 1127        
8 A2 907 856        
9 B1 3231 3050        
10 B1 963 909        
11 B1 831 785        
12 B2 3127 2951        
13 B2 1476 1393        
14 B2 1073 1012        
15 B2 679 641        

Unscaled Zero Point Vibrational Energy (zpe) 12077.9 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 11399.1 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 MP4/6-311+G(3df,2p)
ABC
0.73469 0.35881 0.26692

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.866
C2 0.000 0.743 -0.798
C3 0.000 -0.743 -0.798
H4 -0.916 1.252 -1.072
H5 0.916 1.252 -1.072
H6 0.916 -1.252 -1.072
H7 -0.916 -1.252 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82211.82212.48312.48312.48312.4831
C21.82211.48551.08391.08392.21242.2124
C31.82211.48552.21242.21241.08391.0839
H42.48311.08392.21241.83293.10332.5041
H52.48311.08392.21241.83292.50413.1033
H62.48312.21241.08393.10332.50411.8329
H72.48312.21241.08392.50413.10331.8329

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.944 S1 C2 H4 115.026
S1 C2 H5 115.026 S1 C3 C2 65.944
S1 C3 H6 115.026 S1 C3 H7 115.026
C2 S1 C3 48.112 C2 C3 H6 118.029
C2 C3 H7 118.029 C3 C2 H4 118.029
C3 C2 H5 118.029 H4 C2 H5 115.457
H6 C3 H7 115.457
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability