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All results from a given calculation for H2NO (nitroxide)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-131.063052
Energy at 298.15K 
HF Energy-131.063052
Nuclear repulsion energy35.343927
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 mPW1PW91/6-31G(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 3479 3322 0.46      
2 A1 1687 1611 12.70      
3 A1 1458 1392 7.30      
4 B1 304i 290i 174.79      
5 B2 3611 3448 2.00      
6 B2 1281 1223 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 5606.2 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 5352.2 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 mPW1PW91/6-31G(2df,p)
ABC
10.96211 1.15596 1.04569

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(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 0.729
H3 0.000 0.873 -1.047
H4 0.000 -0.873 -1.047

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26371.01291.0129
O21.26371.97971.9797
H31.01291.97971.7469
H41.01291.97971.7469

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.421 O2 N1 H4 120.421
H3 N1 H4 119.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.219      
2 O -0.345      
3 H 0.282      
4 H 0.282      


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 -2.949 2.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.118 0.000 0.000
y 0.000 -9.715 0.000
z 0.000 0.000 -10.535
Traceless
 xyz
x -1.993 0.000 0.000
y 0.000 1.611 0.000
z 0.000 0.000 0.382
Polar
3z2-r20.764
x2-y2-2.403
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.152 0.000 0.000
y 0.000 1.752 0.000
z 0.000 0.000 2.689


<r2> (average value of r2) Å2
<r2> 16.712
(<r2>)1/2 4.088

Conformer 2 (CS)

Jump to S1C1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-131.063205
Energy at 298.15K-131.065589
HF Energy-131.063205
Nuclear repulsion energy35.310821
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 mPW1PW91/6-31G(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' 3453 3296 0.16      
2 A' 1686 1610 12.86      
3 A' 1445 1380 6.94      
4 A' 414 395 171.10      
5 A" 3581 3419 0.68      
6 A" 1297 1238 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 5937.8 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 5668.9 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 mPW1PW91/6-31G(2df,p)
ABC
10.75403 1.15391 1.04857

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.021 0.537 0.000
O2 -0.021 -0.728 0.000
H3 0.158 1.032 0.868
H4 0.158 1.032 -0.868

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26581.01491.0149
O21.26581.97111.9711
H31.01491.97111.7354
H41.01491.97111.7354

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.185 O2 N1 H4 119.185
H3 N1 H4 117.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.219      
2 O -0.342      
3 H 0.281      
4 H 0.281      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.527 2.863 0.000 2.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.028 0.533 0.000
y 0.533 -10.665 0.000
z 0.000 0.000 -9.786
Traceless
 xyz
x -1.802 0.533 0.000
y 0.533 0.242 0.000
z 0.000 0.000 1.560
Polar
3z2-r23.120
x2-y2-1.363
xy0.533
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.177 0.078 0.000
y 0.078 2.689 0.000
z 0.000 0.000 1.762


<r2> (average value of r2) Å2
<r2> 16.722
(<r2>)1/2 4.089