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: MP2=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-2428.601846
Energy at 298.15K-2428.603896
HF Energy-2428.451535
Nuclear repulsion energy98.581755
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=FULL/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' 3214 3069 5.28      
2 A' 3126 2985 16.10      
3 A' 2213 2113 68.73      
4 A' 1579 1508 10.34      
5 A' 1435 1370 7.03      
6 A' 1056 1008 30.84      
7 A' 724 691 2.99      
8 A' 598 571 0.01      
9 A" 3222 3076 8.03      
10 A" 1569 1498 8.69      
11 A" 969 925 9.83      
12 A" 215 205 6.97      

Unscaled Zero Point Vibrational Energy (zpe) 9959.6 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9509.4 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=FULL/3-21G
ABC
3.12660 0.30012 0.28899

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 -0.032 -0.430 0.000
C2 -0.032 1.565 0.000
H3 1.454 -0.552 0.000
H4 -1.079 1.873 0.000
H5 0.456 1.950 0.895
H6 0.456 1.950 -0.895

Atom - Atom Distances (Å)
  Se1 C2 H3 H4 H5 H6
Se11.99461.49122.52932.58882.5888
C21.99462.58651.09101.08951.0895
H31.49122.58653.50652.83862.8386
H42.52931.09103.50651.77791.7779
H52.58881.08952.83861.77791.7895
H62.58881.08952.83861.77791.7895

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 106.401 Se1 C2 H5 110.703
Se1 C2 H6 110.703 C2 Se1 H3 94.705
H4 C2 H5 109.254 H4 C2 H6 109.254
H5 C2 H6 110.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability