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 CH3CHS (Thioacetaldehyde)

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-476.727749
Energy at 298.15K-476.731478
HF Energy-476.727749
Nuclear repulsion energy91.745752
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 BLYP/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3080 3057 10.68      
2 A' 2994 2970 29.94      
3 A' 2943 2920 4.28      
4 A' 1452 1440 2.69      
5 A' 1357 1347 8.47      
6 A' 1346 1335 70.30      
7 A' 1121 1112 44.52      
8 A' 1055 1046 8.38      
9 A' 802 796 0.80      
10 A' 384 381 1.94      
11 A" 2986 2963 9.33      
12 A" 1445 1434 8.76      
13 A" 1013 1005 1.74      
14 A" 744 738 13.42      
15 A" 163 161 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 11441.8 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 11353.7 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 BLYP/6-31G**
ABC
1.62319 0.18575 0.17201

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.627 0.000
C2 -1.499 0.736 0.000
S3 0.882 -0.760 0.000
H4 0.527 1.597 0.000
H5 -1.985 -0.248 0.000
H6 -1.833 1.314 0.882
H7 -1.833 1.314 -0.882

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.50311.64401.10312.16972.14702.1470
C21.50312.81252.20091.09761.10631.1063
S31.64402.81252.38312.91323.52893.5289
H41.10312.20092.38313.11642.53462.5346
H52.16971.09762.91323.11641.80061.8006
H62.14701.10633.52892.53461.80061.7643
H72.14701.10633.52892.53461.80061.7643

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 112.144 C1 C2 H6 109.794
C1 C2 H7 109.794 C2 C1 S3 126.619
C2 C1 H4 114.360 S3 C1 H4 119.021
H5 C2 H6 109.575 H5 C2 H7 109.575
H6 C2 H7 105.760
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.115      
2 C -0.302      
3 S -0.091      
4 H 0.123      
5 H 0.133      
6 H 0.126      
7 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.749 1.965 0.000 2.631
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.241 -0.584 0.000
y -0.584 -25.174 0.000
z 0.000 0.000 -25.748
Traceless
 xyz
x -0.780 -0.584 0.000
y -0.584 0.821 0.000
z 0.000 0.000 -0.041
Polar
3z2-r2-0.083
x2-y2-1.067
xy-0.584
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.509 -2.054 0.000
y -2.054 6.724 0.000
z 0.000 0.000 3.523


<r2> (average value of r2) Å2
<r2> 75.418
(<r2>)1/2 8.684