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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBEultrafine/cc-pV(T+d)Z

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/cc-pV(T+d)Z
 hartrees
Energy at 0K-476.552799
Energy at 298.15K-476.557194
HF Energy-476.552799
Nuclear repulsion energy100.879488
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/cc-pV(T+d)Z
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 3050 3050 17.38      
2 A1 1438 1438 3.50      
3 A1 1118 1118 1.16      
4 A1 1004 1004 1.08      
5 A1 633 633 19.78      
6 A2 3127 3127 0.00      
7 A2 1151 1151 0.00      
8 A2 872 872 0.00      
9 B1 3141 3141 6.18      
10 B1 927 927 4.35      
11 B1 809 809 0.41      
12 B2 3051 3051 15.93      
13 B2 1419 1419 0.65      
14 B2 1027 1027 25.20      
15 B2 673 673 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 11720.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11720.2 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 PBEPBEultrafine/cc-pV(T+d)Z
ABC
0.73088 0.35858 0.26651

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.866
C2 0.000 0.743 -0.797
C3 0.000 -0.743 -0.797
H4 -0.920 1.259 -1.076
H5 0.920 1.259 -1.076
H6 0.920 -1.259 -1.076
H7 -0.920 -1.259 -1.076

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82181.82182.49042.49042.49042.4904
C21.82181.48701.09071.09072.22092.2209
C31.82181.48702.22092.22091.09071.0907
H42.49041.09072.22091.84003.11802.5172
H52.49041.09072.22091.84002.51723.1180
H62.49042.22091.09073.11802.51721.8400
H72.49042.22091.09072.51723.11801.8400

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.913 S1 C2 H4 115.230
S1 C2 H5 115.230 S1 C3 C2 65.913
S1 C3 H6 115.230 S1 C3 H7 115.230
C2 S1 C3 48.174 C2 C3 H6 118.181
C2 C3 H7 118.181 C3 C2 H4 118.181
C3 C2 H5 118.181 H4 C2 H5 115.030
H6 C3 H7 115.030
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.145      
2 C -0.163      
3 C -0.163      
4 H 0.118      
5 H 0.118      
6 H 0.118      
7 H 0.118      


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 -1.851 1.851
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.152 0.000 0.000
y 0.000 -24.562 0.000
z 0.000 0.000 -26.307
Traceless
 xyz
x -0.718 0.000 0.000
y 0.000 1.668 0.000
z 0.000 0.000 -0.950
Polar
3z2-r2-1.900
x2-y2-1.591
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.777 0.000 0.000
y 0.000 5.815 0.000
z 0.000 0.000 7.209


<r2> (average value of r2) Å2
<r2> 56.647
(<r2>)1/2 7.526