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

using model chemistry: mPW1PW91/3-21G*

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 mPW1PW91/3-21G*
 hartrees
Energy at 0K-187.981263
Energy at 298.15K-187.982321
HF Energy-187.981263
Nuclear repulsion energy62.005323
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 mPW1PW91/3-21G*
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' 3337 3169 2.29      
2 A' 1814 1723 223.01      
3 A' 1317 1251 6.70      
4 A' 1014 963 146.66      
5 A' 580 551 41.81      
6 A" 583 554 157.93      

Unscaled Zero Point Vibrational Energy (zpe) 4322.8 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 4104.9 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 mPW1PW91/3-21G*
ABC
4.69045 0.37608 0.34817

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.442 0.000
O2 -1.076 -0.365 0.000
O3 1.181 0.201 0.000
H4 -0.836 -1.340 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34531.20541.9681
O21.34532.32721.0039
O31.20542.32722.5381
H41.96811.00392.5381

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 113.013 O2 C1 O3 131.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.596      
2 O -0.553      
3 O -0.425      
4 H 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.872 -2.117 0.000 2.289
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.630 0.859 0.000
y 0.859 -13.281 0.000
z 0.000 0.000 -15.691
Traceless
 xyz
x -6.144 0.859 0.000
y 0.859 4.880 0.000
z 0.000 0.000 1.264
Polar
3z2-r22.527
x2-y2-7.349
xy0.859
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.753 0.339 0.000
y 0.339 2.208 0.000
z 0.000 0.000 0.994


<r2> (average value of r2) Å2
<r2> 35.807
(<r2>)1/2 5.984

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-187.983473
Energy at 298.15K-187.984500
HF Energy-187.983473
Nuclear repulsion energy61.731164
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 mPW1PW91/3-21G*
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' 3594 3413 79.48      
2 A' 1862 1768 130.97      
3 A' 1201 1140 200.49      
4 A' 1043 991 104.32      
5 A' 604 574 7.98      
6 A" 521 495 129.00      

Unscaled Zero Point Vibrational Energy (zpe) 4412.2 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 4189.8 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 mPW1PW91/3-21G*
ABC
5.43630 0.36697 0.34376

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.416 0.000
O2 -0.958 -0.562 0.000
O3 1.190 0.268 0.000
H4 -1.856 -0.148 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.36921.19931.9397
O21.36922.30320.9889
O31.19932.30323.0744
H41.93970.98893.0744

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 109.637 O2 C1 O3 127.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.553      
2 O -0.547      
3 O -0.414      
4 H 0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.188 0.442 0.000 3.218
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.411 -1.190 0.000
y -1.190 -17.808 0.000
z 0.000 0.000 -15.703
Traceless
 xyz
x 3.345 -1.190 0.000
y -1.190 -3.251 0.000
z 0.000 0.000 -0.094
Polar
3z2-r2-0.188
x2-y24.397
xy-1.190
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.355 0.234 0.000
y 0.234 1.545 0.000
z 0.000 0.000 1.002


<r2> (average value of r2) Å2
<r2> 36.053
(<r2>)1/2 6.004