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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at G4
 hartrees
Energy at 0K-476.599545
Energy at 298.15K-476.594569
HF Energy-476.799194
Nuclear repulsion energy92.751579
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 B3LYP/6-31G(2df,p)
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' 3146 3036 7.47      
2 A' 3071 2964 20.79      
3 A' 3014 2909 3.43      
4 A' 1477 1425 3.92      
5 A' 1384 1335 5.85      
6 A' 1376 1328 76.34      
7 A' 1165 1125 42.87      
8 A' 1082 1044 6.77      
9 A' 832 803 0.89      
10 A' 393 379 2.27      
11 A" 3064 2957 6.37      
12 A" 1470 1418 7.65      
13 A" 1047 1011 2.22      
14 A" 771 744 10.74      
15 A" 177 171 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 11734.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11323.7 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 B3LYP/6-31G(2df,p)
ABC
1.64799 0.19010 0.17596

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.618 0.000
C2 -1.491 0.715 0.000
S3 0.878 -0.743 0.000
H4 0.514 1.585 0.000
H5 -1.962 -0.269 0.000
H6 -1.826 1.285 0.878
H7 -1.826 1.285 -0.878

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49421.61931.09482.15332.13242.1324
C21.49422.78152.18551.09081.09841.0984
S31.61932.78152.35582.87933.49133.4913
H41.09482.18552.35583.09302.51662.5166
H52.15331.09082.87933.09301.78941.7894
H62.13241.09843.49132.51661.78941.7551
H72.13241.09843.49132.51661.78941.7551

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.721 C1 C2 H6 109.688
C1 C2 H7 109.688 C2 C1 S3 126.626
C2 C1 H4 114.156 S3 C1 H4 119.218
H5 C2 H6 109.644 H5 C2 H7 109.644
H6 C2 H7 106.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.057      
2 C -0.411      
3 S -0.230      
4 H 0.135      
5 H 0.153      
6 H 0.147      
7 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.724 1.951 0.000 2.603
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 74.074
(<r2>)1/2 8.607