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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)=FULL/cc-pVDZ

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(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-476.045052
Energy at 298.15K-476.049487
HF Energy-475.569853
Nuclear repulsion energy100.072386
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(T)=FULL/cc-pVDZ
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 3145 3016        
2 A1 1494 1433        
3 A1 1147 1100        
4 A1 1044 1001        
5 A1 647 620        
6 A2 3230 3098        
7 A2 1187 1138        
8 A2 891 855        
9 B1 3244 3111        
10 B1 953 914        
11 B1 831 797        
12 B2 3140 3011        
13 B2 1461 1401        
14 B2 1061 1017        
15 B2 667 640        

Unscaled Zero Point Vibrational Energy (zpe) 12070.9 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 11576.0 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(T)=FULL/cc-pVDZ
ABC
0.72321 0.35155 0.26194

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.875
C2 0.000 0.748 -0.804
C3 0.000 -0.748 -0.804
H4 -0.925 1.264 -1.089
H5 0.925 1.264 -1.089
H6 0.925 -1.264 -1.089
H7 -0.925 -1.264 -1.089

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83871.83872.51222.51222.51222.5122
C21.83871.49551.09701.09702.23232.2323
C31.83871.49552.23232.23231.09701.0970
H42.51221.09702.23231.85093.13252.5272
H52.51221.09702.23231.85092.52723.1325
H62.51222.23231.09703.13252.52721.8509
H72.51222.23231.09702.52723.13251.8509

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.003 S1 C2 H4 115.344
S1 C2 H5 115.344 S1 C3 C2 66.003
S1 C3 H6 115.344 S1 C3 H7 115.344
C2 S1 C3 47.994 C2 C3 H6 118.049
C2 C3 H7 118.049 C3 C2 H4 118.049
C3 C2 H5 118.049 H4 C2 H5 115.048
H6 C3 H7 115.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability