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All results from a given calculation for CH (Methylidyne)

using model chemistry: HF/STO-3G

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 HF/STO-3G
 hartrees
Energy at 0K-37.770258
Energy at 298.15K 
HF Energy-37.770258
Nuclear repulsion energy2.777335
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 HF/STO-3G
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 3304 2698 121.64 44.16 0.46 0.63

Unscaled Zero Point Vibrational Energy (zpe) 1652.0 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 1348.9 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 HF/STO-3G
B
13.87352

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.163
H2 0.000 0.000 -0.980

Atom - Atom Distances (Å)
  C1 H2
C11.1432
H21.1432

picture of Methylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.019      
2 H -0.019      


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 -1.069 1.069
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.046 0.000 0.000
y 0.000 -4.678 0.000
z 0.000 0.000 -6.672
Traceless
 xyz
x -0.371 0.000 0.000
y 0.000 1.681 0.000
z 0.000 0.000 -1.310
Polar
3z2-r2-2.620
x2-y2-1.368
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.621 0.000 0.000
y 0.000 0.704 0.000
z 0.000 0.000 0.796


<r2> (average value of r2) Å2
<r2> 4.742
(<r2>)1/2 2.178

State 2 (2Π3/2)

Jump to S1C1 S3C1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-37.770258
Energy at 298.15K 
HF Energy-37.770258
Nuclear repulsion energy2.777335
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 HF/STO-3G
Rotational Constants (cm-1) from geometry optimized at HF/STO-3G
B
13.87352

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C∞v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 3 (4Σ-)

Jump to S1C1 S2C1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-37.792004
Energy at 298.15K-37.790653
HF Energy-37.792004
Nuclear repulsion energy2.948055
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 HF/STO-3G
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 3719 3036 5.64      

Unscaled Zero Point Vibrational Energy (zpe) 1859.3 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 1518.1 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 HF/STO-3G
B
15.63152

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.154
H2 0.000 0.000 -0.923

Atom - Atom Distances (Å)
  C1 H2
C11.0770
H21.0770

picture of Methylidyne state 3 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.064      
2 H 0.064      


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 -0.033 0.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -5.767 0.000 0.000
y 0.000 -5.767 0.000
z 0.000 0.000 -4.827
Traceless
 xyz
x -0.470 0.000 0.000
y 0.000 -0.470 0.000
z 0.000 0.000 0.940
Polar
3z2-r21.879
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 0.195 0.000 0.000
y 0.000 0.195 0.000
z 0.000 0.000 0.612


<r2> (average value of r2) Å2
<r2> 4.400
(<r2>)1/2 2.098