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All results from a given calculation for H2NO (nitroxide)

using model chemistry: mPW1PW91/6-31+G**

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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-131.066185
Energy at 298.15K 
HF Energy-131.066185
Nuclear repulsion energy35.191969
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 mPW1PW91/6-31+G**
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 3498 3329 1.31      
2 A1 1686 1605 12.66      
3 A1 1444 1375 6.58      
4 B1 203i 194i 229.64      
5 B2 3645 3469 11.42      
6 B2 1277 1216 3.74      

Unscaled Zero Point Vibrational Energy (zpe) 5673.6 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 5400.1 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 mPW1PW91/6-31+G**
ABC
10.84695 1.14562 1.03618

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.539
O2 0.000 0.000 0.733
H3 0.000 0.878 -1.045
H4 0.000 -0.878 -1.045

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27131.01351.0135
O21.27131.98251.9825
H31.01351.98251.7562
H41.01351.98251.7562

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.957 O2 N1 H4 119.957
H3 N1 H4 120.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.457      
2 O -0.170      
3 H 0.313      
4 H 0.313      


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 -3.250 3.250
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.784 0.000 0.000
y 0.000 -10.085 0.000
z 0.000 0.000 -11.163
Traceless
 xyz
x -2.160 0.000 0.000
y 0.000 1.888 0.000
z 0.000 0.000 0.272
Polar
3z2-r20.544
x2-y2-2.699
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.456 0.000 0.000
y 0.000 1.749 0.000
z 0.000 0.000 3.085


<r2> (average value of r2) Å2
<r2> 17.135
(<r2>)1/2 4.140

Conformer 2 (CS)

Jump to S1C1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-131.066215
Energy at 298.15K-131.068454
HF Energy-131.066215
Nuclear repulsion energy35.182765
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 mPW1PW91/6-31+G**
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' 3485 3317 0.75      
2 A' 1687 1606 12.98      
3 A' 1440 1371 6.59      
4 A' 282 269 222.46      
5 A" 3630 3455 9.44      
6 A" 1285 1223 3.42      

Unscaled Zero Point Vibrational Energy (zpe) 5904.6 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 5620.0 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 mPW1PW91/6-31+G**
ABC
10.75656 1.14509 1.03788

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.014 0.540 0.000
O2 -0.014 -0.732 0.000
H3 0.108 1.038 0.875
H4 0.108 1.038 -0.875

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27201.01441.0144
O21.27201.97841.9784
H31.01441.97841.7504
H41.01441.97841.7504

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.409 O2 N1 H4 119.409
H3 N1 H4 119.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.455      
2 O -0.170      
3 H 0.312      
4 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.412 3.210 0.000 3.236
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.733 0.403 0.000
y 0.403 -11.226 0.000
z 0.000 0.000 -10.118
Traceless
 xyz
x -2.061 0.403 0.000
y 0.403 0.199 0.000
z 0.000 0.000 1.862
Polar
3z2-r23.723
x2-y2-1.507
xy0.403
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.461 0.029 0.000
y 0.029 3.082 0.000
z 0.000 0.000 1.761


<r2> (average value of r2) Å2
<r2> 17.136
(<r2>)1/2 4.140