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All results from a given calculation for HCCO (ketenyl radical)

using model chemistry: LSDA/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 2A"

Conformer 1 (C*V)

Jump to S1C2
Vibrational Frequencies calculated at LSDA/6-31G*
Rotational Constants (cm-1) from geometry optimized at LSDA/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at LSDA/6-31G*
 hartrees
Energy at 0K-151.086109
Energy at 298.15K-151.085578
Nuclear repulsion energy52.048139
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 LSDA/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' 3317 3255 47.54      
2 A' 2125 2085 193.44      
3 A' 1270 1246 8.66      
4 A' 526 516 5.31      
5 A' 490 481 191.24      
6 A" 480 471 2.53      

Unscaled Zero Point Vibrational Energy (zpe) 4103.6 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 4026.9 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 LSDA/6-31G*
ABC
40.75348 0.35919 0.35605

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.046 0.000
C2 1.116 -0.604 0.000
O3 -1.109 0.468 0.000
H4 2.179 -0.398 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4
C11.29101.18682.2236
C21.29102.46961.0831
O31.18682.46963.4001
H42.22361.08313.4001

picture of ketenyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 138.813 C2 C1 O3 170.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.349      
2 C -0.267      
3 O -0.309      
4 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.715 0.400 0.000 1.761
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.527 0.963 0.000
y 0.963 -18.394 0.000
z 0.000 0.000 -15.902
Traceless
 xyz
x 2.621 0.963 0.000
y 0.963 -3.180 0.000
z 0.000 0.000 0.559
Polar
3z2-r21.118
x2-y23.867
xy0.963
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.793 -1.513 0.000
y -1.513 2.459 0.000
z 0.000 0.000 1.830


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000