return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CS (Thioketene)

using model chemistry: PBE1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-473.023132
Energy at 298.15K 
HF Energy-473.023132
Nuclear repulsion energy78.887765
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 PBE1PBE/3-21G
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 3178 3052 33.67 156.80 0.12 0.22
2 A1 1882 1808 344.97 4.84 0.20 0.34
3 A1 1431 1374 5.23 21.53 0.56 0.72
4 A1 879 844 16.46 26.08 0.31 0.48
5 B1 802 770 130.57 1.04 0.75 0.86
6 B1 439 422 5.11 2.21 0.75 0.86
7 B2 3257 3128 5.45 104.16 0.75 0.86
8 B2 984 945 1.66 1.27 0.75 0.86
9 B2 372 358 3.46 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6612.1 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 6350.3 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 PBE1PBE/3-21G
ABC
9.64168 0.18910 0.18546

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.751
C2 0.000 0.000 -0.446
S3 0.000 0.000 1.113
H4 0.000 0.931 -2.310
H5 0.000 -0.931 -2.310

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5
C11.30512.86351.08631.0863
C21.30511.55842.08382.0838
S32.86351.55843.54703.5470
H41.08632.08383.54701.8627
H51.08632.08383.54701.8627

picture of Thioketene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 S3 180.000 C2 C1 H4 120.974
C2 C1 H5 120.974 H4 C1 H5 118.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.581      
2 C -0.071      
3 S 0.111      
4 H 0.270      
5 H 0.270      


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 -1.344 1.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.492 0.000 0.000
y 0.000 -23.263 0.000
z 0.000 0.000 -20.989
Traceless
 xyz
x -5.366 0.000 0.000
y 0.000 0.977 0.000
z 0.000 0.000 4.389
Polar
3z2-r28.778
x2-y2-4.229
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.011 0.000 0.000
y 0.000 2.976 0.000
z 0.000 0.000 9.898


<r2> (average value of r2) Å2
<r2> 66.735
(<r2>)1/2 8.169