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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD(T)/aug-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 CCSD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-476.062404
Energy at 298.15K-476.066801
HF Energy-475.575911
Nuclear repulsion energy99.580136
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)/aug-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 3132 3014        
2 A1 1485 1429        
3 A1 1134 1091        
4 A1 1029 991        
5 A1 622 598        
6 A2 3219 3098        
7 A2 1184 1139        
8 A2 881 848        
9 B1 3234 3113        
10 B1 942 906        
11 B1 821 790        
12 B2 3126 3009        
13 B2 1452 1398        
14 B2 1042 1003        
15 B2 637 613        

Unscaled Zero Point Vibrational Energy (zpe) 11969.0 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11520.2 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)/aug-cc-pVDZ
ABC
0.72186 0.34593 0.25879

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.882
C2 0.000 0.748 -0.815
C3 0.000 -0.748 -0.815
H4 -0.928 1.264 -1.084
H5 0.928 1.264 -1.084
H6 0.928 -1.264 -1.084
H7 -0.928 -1.264 -1.084

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.85491.85492.51502.51502.51502.5150
C21.85491.49661.09541.09542.23232.2323
C31.85491.49662.23232.23231.09541.0954
H42.51501.09542.23231.85633.13642.5281
H52.51501.09542.23231.85632.52813.1364
H62.51502.23231.09543.13642.52811.8563
H72.51502.23231.09542.52813.13641.8563

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.208 S1 C2 H4 114.494
S1 C2 H5 114.494 S1 C3 C2 66.208
S1 C3 H6 114.494 S1 C3 H7 114.494
C2 S1 C3 47.584 C2 C3 H6 118.090
C2 C3 H7 118.090 C3 C2 H4 118.090
C3 C2 H5 118.090 H4 C2 H5 115.851
H6 C3 H7 115.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability