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All results from a given calculation for CH4 (Methane)

using model chemistry: MP4=FULL/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at MP4=FULL/CEP-31G*
 hartrees
Energy at 0K-7.964659
Energy at 298.15K-7.967670
HF Energy-7.812960
Nuclear repulsion energy9.408749
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 MP4=FULL/CEP-31G*
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 3036 3036        
2 E 1543 1543        
2 E 1543 1543        
3 T2 3157 3157        
3 T2 3157 3157        
3 T2 3157 3157        
4 T2 1356 1356        
4 T2 1356 1356        
4 T2 1356 1356        

Unscaled Zero Point Vibrational Energy (zpe) 9829.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9829.7 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 MP4=FULL/CEP-31G*
ABC
5.11173 5.11173 5.11173

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/CEP-31G*

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.640 0.640 0.640
H3 -0.640 -0.640 0.640
H4 -0.640 0.640 -0.640
H5 0.640 -0.640 -0.640

Atom - Atom Distances (Å)
  C1 H2 H3 H4 H5
C11.10771.10771.10771.1077
H21.10771.80891.80891.8089
H31.10771.80891.80891.8089
H41.10771.80891.80891.8089
H51.10771.80891.80891.8089

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