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All results from a given calculation for H2NO (nitroxide)

using model chemistry: HF/6-31G(2df,p)

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 HF/6-31G(2df,p)
 hartrees
Energy at 0K-130.406656
Energy at 298.15K 
HF Energy-130.406656
Nuclear repulsion energy35.680105
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 HF/6-31G(2df,p)
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 3754 3399 23.77      
2 A1 1810 1639 41.04      
3 A1 1497 1356 9.54      
4 B1 471i 427i 235.08      
5 B2 3924 3553 24.10      
6 B2 1388 1256 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 5950.7 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 5388.4 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 HF/6-31G(2df,p)
ABC
11.14564 1.17643 1.06411

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.534
O2 0.000 0.000 0.723
H3 0.000 0.866 -1.022
H4 0.000 -0.866 -1.022

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.25700.99400.9940
O21.25701.94781.9478
H30.99401.94781.7325
H40.99401.94781.7325

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.374 O2 N1 H4 119.374
H3 N1 H4 121.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.246      
2 O -0.356      
3 H 0.301      
4 H 0.301      


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 -2.787 2.787
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.267 0.000 0.000
y 0.000 -9.665 0.000
z 0.000 0.000 -10.589
Traceless
 xyz
x -2.140 0.000 0.000
y 0.000 1.763 0.000
z 0.000 0.000 0.377
Polar
3z2-r20.755
x2-y2-2.602
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.146 0.000 0.000
y 0.000 1.601 0.000
z 0.000 0.000 2.731


<r2> (average value of r2) Å2
<r2> 16.537
(<r2>)1/2 4.067

Conformer 2 (CS)

Jump to S1C1
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-130.407475
Energy at 298.15K-130.410010
HF Energy-130.407475
Nuclear repulsion energy35.520350
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 HF/6-31G(2df,p)
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' 3716 3365 11.03      
2 A' 1817 1645 34.80      
3 A' 1445 1308 6.79      
4 A' 602 545 255.44      
5 A" 3865 3500 12.50      
6 A" 1427 1292 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 6435.8 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 5827.6 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 HF/6-31G(2df,p)
ABC
10.68992 1.16404 1.06494

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.032 0.544 0.000
O2 -0.032 -0.723 0.000
H3 0.238 0.988 0.852
H4 0.238 0.988 -0.852

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26660.99760.9976
O21.26661.92971.9297
H30.99761.92971.7035
H40.99761.92971.7035

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 116.411 O2 N1 H4 116.411
H3 N1 H4 117.257
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.249      
2 O -0.343      
3 H 0.296      
4 H 0.296      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.882 2.520 0.000 2.670
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.051 0.878 0.000
y 0.878 -10.914 0.000
z 0.000 0.000 -9.843
Traceless
 xyz
x -1.672 0.878 0.000
y 0.878 0.033 0.000
z 0.000 0.000 1.639
Polar
3z2-r23.278
x2-y2-1.137
xy0.878
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.196 0.073 0.000
y 0.073 2.669 0.000
z 0.000 0.000 1.622


<r2> (average value of r2) Å2
<r2> 16.610
(<r2>)1/2 4.076