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All results from a given calculation for H2NO (nitroxide)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

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

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-26.418893
Energy at 298.15K-26.421127
HF Energy-26.418893
Nuclear repulsion energy20.825989
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/CEP-31G
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 3825 3448 30.44      
2 A1 1816 1637 43.41      
3 A1 1385 1249 27.29      
4 B1 278 250 523.43      
5 B2 4019 3623 25.18      
6 B2 1348 1215 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 6335.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 5710.5 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/CEP-31G
ABC
10.92280 1.07952 0.98242

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.564
O2 0.000 0.000 0.754
H3 0.000 0.875 -1.043
H4 0.000 -0.875 -1.043

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.31840.99740.9974
O21.31841.99881.9988
H30.99741.99881.7501
H40.99741.99881.7501

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 118.679 O2 N1 H4 118.679
H3 N1 H4 122.642
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.488      
2 O -0.159      
3 H 0.324      
4 H 0.324      


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 -2.920 2.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.737 0.000 0.000
y 0.000 -9.815 0.000
z 0.000 0.000 -11.224
Traceless
 xyz
x -2.217 0.000 0.000
y 0.000 2.166 0.000
z 0.000 0.000 0.052
Polar
3z2-r20.103
x2-y2-2.922
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.640 0.000 0.000
y 0.000 1.226 0.000
z 0.000 0.000 2.892


<r2> (average value of r2) Å2
<r2> 15.743
(<r2>)1/2 3.968

Conformer 2 (CS)

Jump to S1C1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-26.418893
Energy at 298.15K-26.421127
HF Energy-26.418893
Nuclear repulsion energy20.825876
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/CEP-31G
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' 3825 3448 30.44      
2 A' 1816 1637 43.40      
3 A' 1385 1249 27.29      
4 A' 278 250 523.44      
5 A" 4019 3623 25.19      
6 A" 1348 1215 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 6335.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 5710.4 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/CEP-31G
ABC
10.92233 1.07951 0.98241

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.564 0.000
O2 0.000 -0.754 0.000
H3 -0.000 1.043 0.875
H4 -0.000 1.043 -0.875

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.31840.99740.9974
O21.31841.99881.9988
H30.99741.99881.7501
H40.99741.99881.7501

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 118.677 O2 N1 H4 118.677
H3 N1 H4 122.645
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.488      
2 O -0.159      
3 H 0.324      
4 H 0.324      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.001 2.920 0.000 2.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.737 -0.001 0.000
y -0.001 -11.224 0.000
z 0.000 0.000 -9.815
Traceless
 xyz
x -2.217 -0.001 0.000
y -0.001 0.051 0.000
z 0.000 0.000 2.166
Polar
3z2-r24.332
x2-y2-1.513
xy-0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.640 -0.000 0.000
y -0.000 2.892 0.000
z 0.000 0.000 1.226


<r2> (average value of r2) Å2
<r2> 15.743
(<r2>)1/2 3.968