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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD(T)/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/daug-cc-pVTZ
 hartrees
Energy at 0K-476.193632
Energy at 298.15K-476.197750
HF Energy-475.611742
Nuclear repulsion energy100.772052
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 CCSD(T)/daug-cc-pVTZ
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 3100 3100        
2 A1 1424 1424        
3 A1 1138 1138        
4 A1 926 926        
5 A1 632 632        
6 A2 3160 3160        
7 A2 1107 1107        
8 A2 612 612        
9 B1 3214 3214        
10 B1 757 757        
11 B1 747 747        
12 B2 3069 3069        
13 B2 1455 1455        
14 B2 971 971        
15 B2 572 572        

Unscaled Zero Point Vibrational Energy (zpe) 11441.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11441.5 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 CCSD(T)/daug-cc-pVTZ
ABC
0.73434 0.35579 0.26524

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.870
C2 0.000 0.743 -0.802
C3 0.000 -0.743 -0.802
H4 -0.917 1.252 -1.073
H5 0.917 1.252 -1.073
H6 0.917 -1.252 -1.073
H7 -0.917 -1.252 -1.073

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83011.83012.48612.48612.48612.4861
C21.83011.48611.08281.08282.21192.2119
C31.83011.48612.21192.21191.08281.0828
H42.48611.08282.21191.83413.10312.5030
H52.48611.08282.21191.83412.50303.1031
H62.48612.21191.08283.10312.50301.8341
H72.48612.21191.08282.50303.10311.8341

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.044 S1 C2 H4 114.747
S1 C2 H5 114.747 S1 C3 C2 66.044
S1 C3 H6 114.747 S1 C3 H7 114.747
C2 S1 C3 47.912 C2 C3 H6 118.005
C2 C3 H7 118.005 C3 C2 H4 118.005
C3 C2 H5 118.005 H4 C2 H5 115.760
H6 C3 H7 115.760
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability