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All results from a given calculation for CH4 (Methane)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-40.050537
Energy at 298.15K-40.053560
HF Energy-40.050537
Nuclear repulsion energy13.335882
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 TPSSh/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3293 3293 0.00 39.48 0.00 0.00
2 E 1773 1773 0.00 20.67 0.75 0.86
2 E 1773 1773 0.00 20.67 0.75 0.86
3 T2 3528 3528 0.96 19.51 0.75 0.86
3 T2 3528 3528 0.96 19.51 0.75 0.86
3 T2 3528 3528 0.96 19.51 0.75 0.86
4 T2 1544 1544 9.23 3.70 0.75 0.86
4 T2 1544 1544 9.23 3.70 0.75 0.86
4 T2 1544 1544 9.23 3.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11026.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11026.5 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 TPSSh/STO-3G
ABC
5.20155 5.20155 5.20155

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.634 0.634 0.634
H3 -0.634 -0.634 0.634
H4 -0.634 0.634 -0.634
H5 0.634 -0.634 -0.634

Atom - Atom Distances (Å)
  C1 H2 H3 H4 H5
C11.09811.09811.09811.0981
H21.09811.79321.79321.7932
H31.09811.79321.79321.7932
H41.09811.79321.79321.7932
H51.09811.79321.79321.7932

picture of Methane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 109.471 H2 C1 H4 109.471
H2 C1 H5 109.471 H3 C1 H4 109.471
H3 C1 H5 109.471 H4 C1 H5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287      
2 H 0.072      
3 H 0.072      
4 H 0.072      
5 H 0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
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 0.837 0.000 0.000
y 0.000 0.837 0.000
z 0.000 0.000 0.837


<r2> (average value of r2) Å2
<r2> 9.680
(<r2>)1/2 3.111