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: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-113.680514
Energy at 298.15K-113.680361
HF Energy-113.680514
Nuclear repulsion energy26.022359
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 PBE1PBE/6-311G*
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' 3297 3160 61.18 623.11 0.33 0.50
2 A' 1423 1364 45.61 18.73 0.49 0.66
3 A' 1170 1122 89.20 53.32 0.45 0.62

Unscaled Zero Point Vibrational Energy (zpe) 2945.2 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 2823.0 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 PBE1PBE/6-311G*
ABC
23.75398 1.40943 1.33049

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.059 0.788 0.000
O2 0.059 -0.479 0.000
H3 -0.831 -0.897 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.26671.9055
O21.26670.9838
H31.90550.9838

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.059      
2 O -0.350      
3 H 0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.766 -2.242 0.000 2.854
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.002 1.666 0.000
y 1.666 -13.208 0.000
z 0.000 0.000 -11.182
Traceless
 xyz
x 1.192 1.666 0.000
y 1.666 -2.115 0.000
z 0.000 0.000 0.923
Polar
3z2-r21.846
x2-y22.205
xy1.666
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.907 0.454 0.000
y 0.454 2.713 0.000
z 0.000 0.000 1.469


<r2> (average value of r2) Å2
<r2> 14.471
(<r2>)1/2 3.804