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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/Def2TZVPP
 hartrees
Energy at 0K-476.153828
Energy at 298.15K-476.158305
HF Energy-475.607493
Nuclear repulsion energy101.357098
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 QCISD/Def2TZVPP
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 3167 3167 12.68      
2 A1 1522 1522 3.14      
3 A1 1154 1154 1.93      
4 A1 1064 1064 0.53      
5 A1 651 651 24.10      
6 A2 3247 3247 0.00      
7 A2 1209 1209 0.00      
8 A2 918 918 0.00      
9 B1 3262 3262 4.43      
10 B1 979 979 3.30      
11 B1 844 844 0.27      
12 B2 3161 3161 10.66      
13 B2 1495 1495 0.33      
14 B2 1097 1097 27.15      
15 B2 698 698 0.98      

Unscaled Zero Point Vibrational Energy (zpe) 12234.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12234.0 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 QCISD/Def2TZVPP
ABC
0.73764 0.36179 0.26873

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.742 -0.793
C3 0.000 -0.742 -0.793
H4 -0.913 1.248 -1.072
H5 0.913 1.248 -1.072
H6 0.913 -1.248 -1.072
H7 -0.913 -1.248 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81471.81472.47672.47672.47672.4767
C21.81471.48421.08011.08012.20702.2070
C31.81471.48422.20702.20701.08011.0801
H42.47671.08012.20701.82553.09212.4958
H52.47671.08012.20701.82552.49583.0921
H62.47672.20701.08013.09212.49581.8255
H72.47672.20701.08012.49583.09211.8255

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.862 S1 C2 H4 115.285
S1 C2 H5 115.285 S1 C3 C2 65.862
S1 C3 H6 115.285 S1 C3 H7 115.285
C2 S1 C3 48.277 C2 C3 H6 117.922
C2 C3 H7 117.922 C3 C2 H4 117.922
C3 C2 H5 117.922 H4 C2 H5 115.348
H6 C3 H7 115.348
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability