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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4=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 MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-476.044348
Energy at 298.15K-476.048788
HF Energy-475.569890
Nuclear repulsion energy100.093859
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=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 3148 3038        
2 A1 1495 1442        
3 A1 1150 1110        
4 A1 1045 1008        
5 A1 649 626        
6 A2 3236 3123        
7 A2 1187 1146        
8 A2 893 862        
9 B1 3250 3137        
10 B1 954 921        
11 B1 831 802        
12 B2 3143 3034        
13 B2 1462 1411        
14 B2 1061 1024        
15 B2 672 648        

Unscaled Zero Point Vibrational Energy (zpe) 12087.2 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 11665.4 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=FULL/cc-pVDZ
ABC
0.72380 0.35163 0.26206

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=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 0.747 -0.804
C3 0.000 -0.747 -0.804
H4 -0.925 1.263 -1.088
H5 0.925 1.263 -1.088
H6 0.925 -1.263 -1.088
H7 -0.925 -1.263 -1.088

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83841.83842.51172.51172.51172.5117
C21.83841.49471.09701.09702.23162.2316
C31.83841.49472.23162.23161.09701.0970
H42.51171.09702.23161.85073.13212.5268
H52.51171.09702.23161.85072.52683.1321
H62.51172.23161.09703.13212.52681.8507
H72.51172.23161.09702.52683.13211.8507

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.014 S1 C2 H4 115.335
S1 C2 H5 115.335 S1 C3 C2 66.014
S1 C3 H6 115.335 S1 C3 H7 115.335
C2 S1 C3 47.973 C2 C3 H6 118.064
C2 C3 H7 118.064 C3 C2 H4 118.064
C3 C2 H5 118.064 H4 C2 H5 115.033
H6 C3 H7 115.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability