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/3-21G*

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/3-21G*
 hartrees
Energy at 0K-474.439784
Energy at 298.15K-474.443541
HF Energy-474.439784
Nuclear repulsion energy91.700133
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/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 A' 3079 3059 10.00      
2 A' 2988 2969 26.56      
3 A' 2946 2927 2.30      
4 A' 1503 1493 5.25      
5 A' 1406 1397 9.78      
6 A' 1367 1358 59.32      
7 A' 1111 1103 61.41      
8 A' 1081 1074 0.73      
9 A' 802 797 1.60      
10 A' 392 390 1.48      
11 A" 2982 2962 8.23      
12 A" 1499 1489 12.06      
13 A" 1045 1038 0.74      
14 A" 760 755 21.79      
15 A" 162 161 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 11561.4 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 11486.2 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 BLYP/3-21G*
ABC
1.59964 0.18604 0.17206

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 0.000
C2 -1.513 0.714 0.000
S3 0.891 -0.747 0.000
H4 0.504 1.610 0.000
H5 -1.968 -0.286 0.000
H6 -1.855 1.282 0.887
H7 -1.855 1.282 -0.887

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.51531.64001.10222.17072.15722.1572
C21.51532.81282.20761.09821.10741.1074
S31.64002.81282.38842.89593.52743.5274
H41.10222.20762.38843.11562.54232.5423
H52.17071.09822.89593.11561.80441.8044
H62.15721.10743.52742.54231.80441.7742
H72.15721.10743.52742.54231.80441.7742

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.314 C1 C2 H6 109.689
C1 C2 H7 109.689 C2 C1 S3 126.068
C2 C1 H4 114.068 S3 C1 H4 119.864
H5 C2 H6 109.787 H5 C2 H7 109.787
H6 C2 H7 106.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.274      
2 C -0.573      
3 S 0.001      
4 H 0.207      
5 H 0.217      
6 H 0.211      
7 H 0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.663 1.825 0.000 2.469
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.224 -0.650 0.000
y -0.650 -25.111 0.000
z 0.000 0.000 -25.953
Traceless
 xyz
x -0.692 -0.650 0.000
y -0.650 0.978 0.000
z 0.000 0.000 -0.286
Polar
3z2-r2-0.572
x2-y2-1.113
xy-0.650
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.082 -2.022 0.000
y -2.022 6.279 0.000
z 0.000 0.000 3.187


<r2> (average value of r2) Å2
<r2> 75.431
(<r2>)1/2 8.685