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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-476.517695
Energy at 298.15K-476.522069
HF Energy-476.517695
Nuclear repulsion energy100.015286
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 PBEPBEultrafine/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 3059 3040 17.12      
2 A1 1431 1422 2.42      
3 A1 1125 1118 1.42      
4 A1 996 990 0.73      
5 A1 633 629 21.64      
6 A2 3147 3128 0.00      
7 A2 1143 1136 0.00      
8 A2 864 859 0.00      
9 B1 3161 3142 4.11      
10 B1 918 912 3.85      
11 B1 801 796 0.48      
12 B2 3058 3040 12.19      
13 B2 1405 1397 0.89      
14 B2 1007 1001 21.42      
15 B2 655 651 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 11700.2 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 11628.8 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.72516 0.35027 0.26159

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.877
C2 0.000 0.745 -0.808
C3 0.000 -0.745 -0.808
H4 -0.927 1.266 -1.081
H5 0.927 1.266 -1.081
H6 0.927 -1.266 -1.081
H7 -0.927 -1.266 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84231.84232.50942.50942.50942.5094
C21.84231.48981.09831.09832.23142.2314
C31.84231.48982.23142.23141.09831.0983
H42.50941.09832.23141.85463.13882.5324
H52.50941.09832.23141.85462.53243.1388
H62.50942.23141.09833.13882.53241.8546
H72.50942.23141.09832.53243.13881.8546

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.150 S1 C2 H4 114.796
S1 C2 H5 114.796 S1 C3 C2 66.150
S1 C3 H6 114.796 S1 C3 H7 114.796
C2 S1 C3 47.701 C2 C3 H6 118.335
C2 C3 H7 118.335 C3 C2 H4 118.335
C3 C2 H5 118.335 H4 C2 H5 115.198
H6 C3 H7 115.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.038      
2 C 0.847      
3 C 0.847      
4 H -0.433      
5 H -0.433      
6 H -0.433      
7 H -0.433      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.943 1.943
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.542 0.000 0.000
y 0.000 -24.752 0.000
z 0.000 0.000 -26.638
Traceless
 xyz
x -0.846 0.000 0.000
y 0.000 1.838 0.000
z 0.000 0.000 -0.991
Polar
3z2-r2-1.983
x2-y2-1.789
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.929 0.000 0.000
y 0.000 6.483 0.000
z 0.000 0.000 8.041


<r2> (average value of r2) Å2
<r2> 57.550
(<r2>)1/2 7.586