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All results from a given calculation for H2NO (nitroxide)

using model chemistry: ROMP2/6-31+G**

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 ROMP2/6-31+G**
 hartrees
Energy at 0K-130.740554
Energy at 298.15K-130.742797
HF Energy-130.395422
Nuclear repulsion energy35.301707
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 ROMP2/6-31+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 3524 3524        
2 A1 1727 1727        
3 A1 1576 1576        
4 B1 282 282        
5 B2 3687 3687        
6 B2 1287 1287        

Unscaled Zero Point Vibrational Energy (zpe) 6041.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6041.7 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 ROMP2/6-31+G**
ABC
10.89903 1.15388 1.04342

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.535
O2 0.000 0.000 0.730
H3 0.000 0.876 -1.046
H4 0.000 -0.876 -1.046

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26541.01411.0141
O21.26541.98051.9805
H31.01411.98051.7520
H41.01411.98051.7520

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.249 O2 N1 H4 120.249
H3 N1 H4 119.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.487      
2 O -0.142      
3 H 0.315      
4 H 0.315      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 17.016
(<r2>)1/2 4.125

Conformer 2 (CS)

Jump to S1C1
Energy calculated at ROMP2/6-31+G**
 hartrees
Energy at 0K-130.740554
Energy at 298.15K 
HF Energy-130.395430
Nuclear repulsion energy35.303955
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 ROMP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at ROMP2/6-31+G**
ABC
10.89903 1.15388 1.04342

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31+G**

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.487      
2 O -0.142      
3 H 0.315      
4 H 0.315      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 17.015
(<r2>)1/2 4.125