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 CH3S (thiomethoxy)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-435.075049
Energy at 298.15K-435.077691
HF Energy-434.943608
Nuclear repulsion energy46.620114
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 MP2/3-21G
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 3199 3054 0.06      
2 A 3196 3050 7.17      
3 A 3108 2966 6.18      
4 A 1575 1504 14.72      
5 A 1503 1434 16.59      
6 A 1426 1361 3.99      
7 A 936 893 1.69      
8 A 649 620 0.44      
9 A 528 504 65.20      

Unscaled Zero Point Vibrational Energy (zpe) 8059.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 7692.8 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 MP2/3-21G
ABC
5.22075 0.40559 0.40520

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.174 0.000 -0.005
S2 -0.726 0.000 -0.001
H3 1.485 -0.001 1.044
H4 1.541 -0.900 -0.497
H5 1.541 0.901 -0.495

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5
C11.90021.09431.08911.0891
S21.90022.44532.48892.4890
H31.09432.44531.78481.7849
H41.08912.48891.78481.8009
H51.08912.48901.78491.8009

picture of thiomethoxy state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S2 C1 H3 106.365 S2 C1 H4 109.736
S2 C1 H5 109.743 H3 C1 H4 109.661
H3 C1 H5 109.665 H4 C1 H5 111.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.790     -0.069
2 S 0.105     -0.151
3 H 0.231     0.090
4 H 0.227     0.065
5 H 0.227     0.065


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.740 -0.000 0.059 1.741
CHELPG        
AIM        
ESP 1.738 -0.000 0.145 1.744


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.507 -0.000 0.113
y -0.000 -22.156 -0.001
z 0.113 -0.001 -19.458
Traceless
 xyz
x 0.300 -0.000 0.113
y -0.000 -2.174 -0.001
z 0.113 -0.001 1.873
Polar
3z2-r23.746
x2-y21.649
xy-0.000
xz0.113
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.744 0.000 -0.001
y 0.000 2.298 0.000
z -0.001 0.000 2.589


<r2> (average value of r2) Å2
<r2> 39.737
(<r2>)1/2 6.304