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All results from a given calculation for CH (Methylidyne)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-38.297283
Energy at 298.15K 
HF Energy-38.251071
Nuclear repulsion energy2.793745
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 MP2=FULL/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 2790 2651 231.08 134.95 0.54 0.70

Unscaled Zero Point Vibrational Energy (zpe) 1395.1 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 1325.5 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 MP2=FULL/6-31G
B
14.03794

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.162
H2 0.000 0.000 -0.974

Atom - Atom Distances (Å)
  C1 H2
C11.1365
H21.1365

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 MP2=FULL/6-31G
 hartrees
Energy at 0K-38.297283
Energy at 298.15K 
HF Energy-38.251071
Nuclear repulsion energy2.793745
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 MP2=FULL/6-31G
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G
B
14.03794

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-38.303689
Energy at 298.15K-38.302337
HF Energy-38.271205
Nuclear repulsion energy2.925461
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 MP2=FULL/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 3269 3105 13.18      

Unscaled Zero Point Vibrational Energy (zpe) 1634.3 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 1552.7 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 MP2=FULL/6-31G
B
15.39283

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 -0.930

Atom - Atom Distances (Å)
  C1 H2
C11.0853
H21.0853

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