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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-151.035591
Energy at 298.15K-151.034562
Nuclear repulsion energy51.658086
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' 3430 3360 103.34      
2 A' 2088 2045 100.15      
3 A' 1252 1227 24.62      
4 A' 498 488 2.40      
5 A' 112 109 155.34      
6 A" 457 448 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 3918.1 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 3838.5 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 LSDA/6-31G
ABC
571.85063 0.34917 0.34895

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 0.016 0.000
C2 1.009 -0.749 0.000
O3 -1.003 0.704 0.000
H4 1.969 -1.231 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4
C11.26671.21672.3309
C21.26672.48271.0740
O31.21672.48273.5471
H42.33091.07403.5471

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 169.483 C2 C1 O3 177.295
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 0.085      
2 C -0.060      
3 O -0.278      
4 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.088 -1.082 0.000 2.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.186 -1.002 0.000
y -1.002 -17.297 0.000
z 0.000 0.000 -15.923
Traceless
 xyz
x 1.423 -1.002 0.000
y -1.002 -1.742 0.000
z 0.000 0.000 0.319
Polar
3z2-r20.637
x2-y22.110
xy-1.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.012 -2.051 0.000
y -2.051 2.741 0.000
z 0.000 0.000 1.883


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