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All results from a given calculation for HOCO (Hydrocarboxyl radical)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 1A'
1 2 yes CS trans 1A'

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-187.959804
Energy at 298.15K-187.960852
HF Energy-187.959804
Nuclear repulsion energy61.850167
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 B3PW91/3-21G*
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' 3289 3155 1.94      
2 A' 1793 1720 213.40      
3 A' 1308 1255 7.43      
4 A' 997 957 137.72      
5 A' 573 550 39.71      
6 A" 580 556 151.99      

Unscaled Zero Point Vibrational Energy (zpe) 4269.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4096.4 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 B3PW91/3-21G*
ABC
4.66653 0.37423 0.34645

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.443 0.000
O2 -1.079 -0.366 0.000
O3 1.184 0.201 0.000
H4 -0.836 -1.343 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34871.20831.9717
O21.34872.33311.0070
O31.20832.33312.5420
H41.97171.00702.5420

picture of Hydrocarboxyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 112.835 O2 C1 O3 131.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.578      
2 O -0.540      
3 O -0.416      
4 H 0.377      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.848 -2.128 0.000 2.291
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.552 0.864 0.000
y 0.864 -13.312 0.000
z 0.000 0.000 -15.700
Traceless
 xyz
x -6.047 0.864 0.000
y 0.864 4.814 0.000
z 0.000 0.000 1.233
Polar
3z2-r22.465
x2-y2-7.240
xy0.864
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.777 0.361 0.000
y 0.361 2.250 0.000
z 0.000 0.000 0.999


<r2> (average value of r2) Å2
<r2> 35.924
(<r2>)1/2 5.994

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-187.962211
Energy at 298.15K-187.963231
HF Energy-187.962211
Nuclear repulsion energy61.566625
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 B3PW91/3-21G*
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' 3560 3416 70.78      
2 A' 1840 1765 123.08      
3 A' 1193 1145 195.86      
4 A' 1027 986 102.75      
5 A' 598 574 8.22      
6 A" 521 500 127.57      

Unscaled Zero Point Vibrational Energy (zpe) 4369.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4192.3 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 B3PW91/3-21G*
ABC
5.37329 0.36534 0.34208

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.418 0.000
O2 -0.961 -0.564 0.000
O3 1.193 0.268 0.000
H4 -1.859 -0.144 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.37391.20221.9419
O21.37392.30850.9913
O31.20222.30853.0792
H41.94190.99133.0792

picture of Hydrocarboxyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 109.305 O2 C1 O3 127.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.535      
2 O -0.535      
3 O -0.406      
4 H 0.406      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.156 0.414 0.000 3.183
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.365 -1.169 0.000
y -1.169 -17.802 0.000
z 0.000 0.000 -15.711
Traceless
 xyz
x 3.392 -1.169 0.000
y -1.169 -3.264 0.000
z 0.000 0.000 -0.127
Polar
3z2-r2-0.254
x2-y24.437
xy-1.169
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.388 0.246 0.000
y 0.246 1.557 0.000
z 0.000 0.000 1.006


<r2> (average value of r2) Å2
<r2> 36.168
(<r2>)1/2 6.014