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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP=FULLultrafine/daug-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 B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-476.573515
Energy at 298.15K 
HF Energy-476.423946
Nuclear repulsion energy100.197314
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 B2PLYP=FULLultrafine/daug-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 3153 3153 14.61      
2 A1 1493 1493 2.43      
3 A1 1150 1150 2.28      
4 A1 1037 1037 0.54      
5 A1 626 626 25.18      
6 A2 3244 3244 0.00      
7 A2 1194 1194 0.00      
8 A2 892 892 0.00      
9 B1 3258 3258 2.96      
10 B1 949 949 3.03      
11 B1 829 829 0.43      
12 B2 3150 3150 10.48      
13 B2 1464 1464 0.69      
14 B2 1060 1060 22.16      
15 B2 653 653 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 12075.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12075.7 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 B2PLYP=FULLultrafine/daug-cc-pVDZ
ABC
0.73323 0.34954 0.26184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.878
C2 0.000 0.742 -0.811
C3 0.000 -0.742 -0.811
H4 -0.921 1.257 -1.078
H5 0.921 1.257 -1.078
H6 0.921 -1.257 -1.078
H7 -0.921 -1.257 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84451.84452.50112.50112.50112.5011
C21.84451.48321.08881.08882.21702.2170
C31.84451.48322.21702.21701.08881.0888
H42.50111.08882.21701.84173.11692.5146
H52.50111.08882.21701.84172.51463.1169
H62.50112.21701.08883.11692.51461.8417
H72.50112.21701.08882.51463.11691.8417

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.293 S1 C2 H4 114.536
S1 C2 H5 114.536 S1 C3 C2 66.293
S1 C3 H6 114.536 S1 C3 H7 114.536
C2 S1 C3 47.415 C2 C3 H6 118.273
C2 C3 H7 118.273 C3 C2 H4 118.273
C3 C2 H5 118.273 H4 C2 H5 115.512
H6 C3 H7 115.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability