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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-21.601338
Energy at 298.15K-21.601181
HF Energy-21.601338
Nuclear repulsion energy13.972952
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' 3931 3543 69.84 126.66 0.31 0.47
2 A' 1338 1206 198.75 7.18 0.51 0.68
3 A' 1173 1057 193.37 8.10 0.73 0.84

Unscaled Zero Point Vibrational Energy (zpe) 3220.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 2903.3 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
26.93876 1.28831 1.22951

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 0.056 0.825 0.000
O2 0.056 -0.497 0.000
H3 -0.783 -0.972 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.32141.9828
O21.32140.9639
H31.98280.9639

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 0.006      
2 O -0.427      
3 H 0.421      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.089 -1.773 0.000 2.740
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.227 2.201 0.000
y 2.201 -13.574 0.000
z 0.000 0.000 -11.274
Traceless
 xyz
x 1.196 2.201 0.000
y 2.201 -2.324 0.000
z 0.000 0.000 1.127
Polar
3z2-r22.255
x2-y22.347
xy2.201
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.825 0.327 0.000
y 0.327 2.336 0.000
z 0.000 0.000 1.459


<r2> (average value of r2) Å2
<r2> 13.300
(<r2>)1/2 3.647