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All results from a given calculation for CH4 (Methane)

using model chemistry: CCSD=FULL/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at CCSD=FULL/CEP-121G*
 hartrees
Energy at 0K-7.980508
Energy at 298.15K-7.983526
HF Energy-7.818498
Nuclear repulsion energy9.502091
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 CCSD=FULL/CEP-121G*
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 3018 3018 0.00      
2 E 1572 1572 0.00      
2 E 1572 1572 0.00      
3 T2 3146 3146 35.21      
3 T2 3146 3146 35.21      
3 T2 3146 3146 35.21      
4 T2 1381 1381 15.01      
4 T2 1381 1381 15.01      
4 T2 1381 1381 15.01      

Unscaled Zero Point Vibrational Energy (zpe) 9871.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9871.6 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 CCSD=FULL/CEP-121G*
ABC
5.22496 5.22496 5.22496

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/CEP-121G*

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.633 0.633 0.633
H3 -0.633 -0.633 0.633
H4 -0.633 0.633 -0.633
H5 0.633 -0.633 -0.633

Atom - Atom Distances (Å)
  C1 H2 H3 H4 H5
C11.09571.09571.09571.0957
H21.09571.78921.78921.7892
H31.09571.78921.78921.7892
H41.09571.78921.78921.7892
H51.09571.78921.78921.7892

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