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: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-113.699038
Energy at 298.15K-113.698865
HF Energy-113.699038
Nuclear repulsion energy25.800247
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 PBEPBE/TZVP
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' 2829 2797 360.54 1889.15 0.35 0.51
2 A' 1327 1312 12.94 135.95 0.40 0.57
3 A' 1039 1028 49.19 325.96 0.40 0.57

Unscaled Zero Point Vibrational Energy (zpe) 2597.6 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 2568.5 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 PBEPBE/TZVP
ABC
23.05405 1.39213 1.31285

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.060 0.793 0.000
O2 0.060 -0.479 0.000
H3 -0.846 -0.926 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.27141.9434
O21.27141.0108
H31.94341.0108

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 O -0.148      
3 H 0.273      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.599 -2.236 0.000 2.749
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.449 1.537 0.000
y 1.537 -13.568 0.000
z 0.000 0.000 -11.441
Traceless
 xyz
x 1.056 1.537 0.000
y 1.537 -2.123 0.000
z 0.000 0.000 1.067
Polar
3z2-r22.134
x2-y22.120
xy1.537
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.505 0.777 0.000
y 0.777 3.657 0.000
z 0.000 0.000 1.718


<r2> (average value of r2) Å2
<r2> 14.819
(<r2>)1/2 3.850