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 CH3SeH (Methane selenol)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-2428.904729
Energy at 298.15K-2428.906765
HF Energy-2428.656292
Nuclear repulsion energy98.927727
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 CCD/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' 3150 3013 6.50      
2 A' 3067 2934 16.06      
3 A' 2424 2319 25.08      
4 A' 1566 1498 7.23      
5 A' 1401 1340 8.14      
6 A' 1044 999 17.54      
7 A' 747 714 0.63      
8 A' 606 580 0.22      
9 A" 3161 3024 7.27      
10 A" 1558 1490 5.27      
11 A" 958 916 8.51      
12 A" 204 195 6.61      

Unscaled Zero Point Vibrational Energy (zpe) 9942.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 9509.9 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 CCD/3-21G*
ABC
3.10808 0.30293 0.29167

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 -0.032 -0.428 0.000
C2 -0.032 1.558 0.000
H3 1.449 -0.536 0.000
H4 -1.084 1.866 0.000
H5 0.462 1.933 0.901
H6 0.462 1.933 -0.901

Atom - Atom Distances (Å)
  Se1 C2 H3 H4 H5 H6
Se11.98621.48502.52382.57452.5745
C21.98622.56511.09581.09391.0939
H31.48502.56513.49092.80722.8072
H42.52381.09583.49091.79041.7904
H52.57451.09392.80721.79041.8029
H62.57451.09392.80721.79041.8029

picture of Methane selenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.331 Se1 C2 H5 110.004
Se1 C2 H6 110.004 C2 Se1 H3 94.176
H4 C2 H5 109.701 H4 C2 H6 109.701
H5 C2 H6 110.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability