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All results from a given calculation for CH (Methylidyne)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π1/2
3 1 yes C*V 4Σ-

State 1 (2Π1/2)

Jump to S2C1 S3C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-38.355176
Energy at 298.15K 
HF Energy-38.264746
Nuclear repulsion energy2.818804
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2882 2705 177.62      

Unscaled Zero Point Vibrational Energy (zpe) 1441.0 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 1352.5 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 MP3/6-31G*
B
14.29091

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.161
H2 0.000 0.000 -0.965

Atom - Atom Distances (Å)
  C1 H2
C11.1264
H21.1264

picture of Methylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (2Π3/2)

Jump to S1C1 S3C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-38.355176
Energy at 298.15K 
HF Energy-38.264746
Nuclear repulsion energy2.818804
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 MP3/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP3/6-31G*
B
14.29091

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C∞v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 3 (4Σ-)

Jump to S1C1 S2C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-38.342047
Energy at 298.15K-38.340696
HF Energy-38.275989
Nuclear repulsion energy2.922700
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3234 3035 32.39      

Unscaled Zero Point Vibrational Energy (zpe) 1617.0 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 1517.7 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 MP3/6-31G*
B
15.36379

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.155
H2 0.000 0.000 -0.931

Atom - Atom Distances (Å)
  C1 H2
C11.0863
H21.0863

picture of Methylidyne state 3 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability