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All results from a given calculation for COH (Hydroxymethylidyne)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-21.651885
Energy at 298.15K-21.651743
HF Energy-21.651885
Nuclear repulsion energy14.305056
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/CEP-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 A' 3945 3542 74.87 108.12 0.30 0.46
2 A' 1478 1327 199.56 3.02 0.53 0.69
3 A' 1281 1150 109.55 8.49 0.58 0.74

Unscaled Zero Point Vibrational Energy (zpe) 3351.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 3009.8 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/CEP-31G*
ABC
23.61841 1.38005 1.30386

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.059 0.796 0.000
O2 0.059 -0.490 0.000
H3 -0.830 -0.856 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.28611.8764
O21.28610.9615
H31.87640.9615

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.122      
2 O -0.330      
3 H 0.452      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.835 -1.956 0.000 2.682
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.882 1.792 0.000
y 1.792 -13.553 0.000
z 0.000 0.000 -11.155
Traceless
 xyz
x 1.472 1.792 0.000
y 1.792 -2.535 0.000
z 0.000 0.000 1.062
Polar
3z2-r22.125
x2-y22.672
xy1.792
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.886 0.263 0.000
y 0.263 2.251 0.000
z 0.000 0.000 1.533


<r2> (average value of r2) Å2
<r2> 12.843
(<r2>)1/2 3.584