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: B3LYP/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-113.843121
Energy at 298.15K-113.842963
HF Energy-113.843121
Nuclear repulsion energy26.003200
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 B3LYP/aug-cc-pVQZ
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' 3268 3167 63.95 1000.12 0.34 0.51
2 A' 1385 1342 37.89 44.59 0.46 0.63
3 A' 1127 1092 90.48 90.78 0.36 0.53

Unscaled Zero Point Vibrational Energy (zpe) 2890.1 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 2800.2 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 B3LYP/aug-cc-pVQZ
ABC
23.65477 1.40811 1.32900

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.060 0.788 0.000
O2 0.060 -0.479 0.000
H3 -0.833 -0.898 0.000

Atom - Atom Distances (Å)
  C1 O2 H3
C11.26721.9077
O21.26720.9859
H31.90770.9859

picture of Hydroxymethylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.033      
2 O -0.386      
3 H 0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.533 -2.233 0.000 2.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.444 1.571 0.000
y 1.571 -13.528 0.000
z 0.000 0.000 -11.511
Traceless
 xyz
x 1.075 1.571 0.000
y 1.571 -2.051 0.000
z 0.000 0.000 0.976
Polar
3z2-r21.951
x2-y22.084
xy1.571
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.982 0.445 0.000
y 0.445 3.582 0.000
z 0.000 0.000 2.300


<r2> (average value of r2) Å2
<r2> 14.708
(<r2>)1/2 3.835