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: HSEh1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HSEh1PBE/6-31G*
 hartrees
Energy at 0K-113.659645
Energy at 298.15K-113.659490
HF Energy-113.659645
Nuclear repulsion energy25.842149
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 HSEh1PBE/6-31G*
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' 3275 3115 48.13 499.29 0.32 0.49
2 A' 1421 1351 42.45 11.48 0.62 0.76
3 A' 1152 1095 88.11 46.71 0.44 0.61

Unscaled Zero Point Vibrational Energy (zpe) 2923.8 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 2780.6 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 HSEh1PBE/6-31G*
ABC
23.07430 1.39164 1.31249

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.060 0.793 0.000
O2 0.060 -0.483 0.000
H3 -0.842 -0.890 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.27621.9096
O21.27620.9899
H31.90960.9899

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.000      
2 O -0.427      
3 H 0.427      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.687 -2.119 0.000 2.708
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.629 1.580 0.000
y 1.580 -12.909 0.000
z 0.000 0.000 -10.906
Traceless
 xyz
x 1.279 1.580 0.000
y 1.580 -2.141 0.000
z 0.000 0.000 0.863
Polar
3z2-r21.725
x2-y22.280
xy1.580
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.759 0.446 0.000
y 0.446 2.536 0.000
z 0.000 0.000 1.335


<r2> (average value of r2) Å2
<r2> 14.364
(<r2>)1/2 3.790