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All results from a given calculation for CH4 (Methane)

using model chemistry: PBEPBEultrafine/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-40.443708
Energy at 298.15K-40.446700
HF Energy-40.443708
Nuclear repulsion energy13.239719
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 PBEPBEultrafine/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2972 2955 0.00 148.21 0.00 0.00
2 E 1485 1476 0.00 21.69 0.75 0.86
2 E 1485 1476 0.00 21.69 0.75 0.86
3 T2 3107 3089 15.81 60.54 0.75 0.86
3 T2 3107 3089 15.81 60.54 0.75 0.86
3 T2 3107 3089 15.81 60.54 0.75 0.86
4 T2 1258 1251 13.83 1.20 0.75 0.86
4 T2 1258 1251 13.83 1.20 0.75 0.86
4 T2 1258 1251 13.83 1.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9519.2 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9464.0 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 PBEPBEultrafine/cc-pVDZ
ABC
5.12680 5.12680 5.12680

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.639 0.639 0.639
H3 -0.639 -0.639 0.639
H4 -0.639 0.639 -0.639
H5 0.639 -0.639 -0.639

Atom - Atom Distances (Å)
  C1 H2 H3 H4 H5
C11.10611.10611.10611.1061
H21.10611.80631.80631.8063
H31.10611.80631.80631.8063
H41.10611.80631.80631.8063
H51.10611.80631.80631.8063

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 PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
2 H 0.045      
3 H 0.045      
4 H 0.045      
5 H 0.045      


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
Primitive
 xyz
x -8.326 0.000 0.000
y 0.000 -8.326 0.000
z 0.000 0.000 -8.326
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.023 0.000 0.000
y 0.000 2.023 0.000
z 0.000 0.000 2.023


<r2> (average value of r2) Å2
<r2> 10.094
(<r2>)1/2 3.177