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All results from a given calculation for H2NO (nitroxide)

using model chemistry: mPW1PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C2V 2B1
1 2 yes CS 2A'

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-129.289819
Energy at 298.15K 
HF Energy-129.289819
Nuclear repulsion energy33.516189
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3563 3131 3.92      
2 A1 1776 1561 13.79      
3 A1 1416 1245 4.42      
4 B1 566i 497i 257.76      
5 B2 3771 3314 3.83      
6 B2 1204 1058 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 5581.8 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 4905.9 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/STO-3G
ABC
10.60535 1.02351 0.93343

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.566
O2 0.000 0.000 0.775
H3 0.000 0.888 -1.121
H4 0.000 -0.888 -1.121

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.34071.04761.0476
O21.34072.09412.0941
H31.04762.09411.7761
H41.04762.09411.7761

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 122.038 O2 N1 H4 122.038
H3 N1 H4 115.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.282      
2 O -0.105      
3 H 0.194      
4 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.084 2.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.858 0.000 0.000
y 0.000 -9.043 0.000
z 0.000 0.000 -9.374
Traceless
 xyz
x -1.649 0.000 0.000
y 0.000 1.073 0.000
z 0.000 0.000 0.576
Polar
3z2-r21.151
x2-y2-1.815
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.243 0.000 0.000
y 0.000 0.870 0.000
z 0.000 0.000 1.596


<r2> (average value of r2) Å2
<r2> 17.233
(<r2>)1/2 4.151

Conformer 2 (CS)

Jump to S1C1
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-129.293021
Energy at 298.15K-129.295537
HF Energy-129.293021
Nuclear repulsion energy33.173593
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/STO-3G
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' 3449 3032 1.46      
2 A' 1806 1587 10.53      
3 A' 1351 1187 1.18      
4 A' 697 613 183.06      
5 A" 3653 3211 14.96      
6 A" 1304 1146 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 6130.3 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 5388.0 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/STO-3G
ABC
9.36624 1.00386 0.93677

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.051 0.590 0.000
O2 -0.051 -0.773 0.000
H3 0.383 1.028 0.863
H4 0.383 1.028 -0.863

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.36311.06061.0606
O21.36312.04402.0440
H31.06062.04401.7260
H41.06062.04401.7260

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 114.409 O2 N1 H4 114.409
H3 N1 H4 108.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.268      
2 O -0.096      
3 H 0.182      
4 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.307 1.574 0.000 2.046
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.465 1.205 0.000
y 1.205 -10.185 0.000
z 0.000 0.000 -9.345
Traceless
 xyz
x -0.700 1.205 0.000
y 1.205 -0.280 0.000
z 0.000 0.000 0.980
Polar
3z2-r21.960
x2-y2-0.281
xy1.205
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.359 0.183 0.000
y 0.183 1.553 0.000
z 0.000 0.000 0.897


<r2> (average value of r2) Å2
<r2> 17.400
(<r2>)1/2 4.171