return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for COH (Hydroxymethylidyne)

using model chemistry: PBEPBEultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBEultrafine/cc-pVTZ
 hartrees
Energy at 0K-113.700216
Energy at 298.15K-113.700047
HF Energy-113.700216
Nuclear repulsion energy25.794994
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 PBEPBEultrafine/cc-pVTZ
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' 2907 2887 268.25 1528.31 0.33 0.49
2 A' 1337 1328 7.06 80.00 0.42 0.59
3 A' 1060 1052 51.97 223.89 0.38 0.55

Unscaled Zero Point Vibrational Energy (zpe) 2652.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 2633.9 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 PBEPBEultrafine/cc-pVTZ
ABC
22.78691 1.39165 1.31155

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.061 0.793 0.000
O2 0.061 -0.481 0.000
H3 -0.849 -0.910 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.27371.9304
O21.27371.0059
H31.93041.0059

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 O -0.044      
3 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.485 -2.250 0.000 2.696
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.250 1.413 0.000
y 1.413 -13.316 0.000
z 0.000 0.000 -11.348
Traceless
 xyz
x 1.082 1.413 0.000
y 1.413 -2.017 0.000
z 0.000 0.000 0.935
Polar
3z2-r21.870
x2-y22.066
xy1.413
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.408 0.666 0.000
y 0.666 3.425 0.000
z 0.000 0.000 1.808


<r2> (average value of r2) Å2
<r2> 14.699
(<r2>)1/2 3.834