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All results from a given calculation for H2NO (nitroxide)

using model chemistry: MP4/6-31G*

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 MP4/6-31G*
 hartrees
Energy at 0K-130.731699
Energy at 298.15K 
HF Energy-130.386821
Nuclear repulsion energy34.915766
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 MP4/6-31G*
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 3468 3311        
2 A1 1696 1620        
3 A1 1455 1389        
4 B1 372i 356i        
5 B2 3610 3447        
6 B2 1273 1216        

Unscaled Zero Point Vibrational Energy (zpe) 5565.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 5313.6 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 MP4/6-31G*
ABC
10.78254 1.12523 1.01890

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.543
O2 0.000 0.000 0.739
H3 0.000 0.881 -1.055
H4 0.000 -0.881 -1.055

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.28251.01861.0186
O21.28251.99881.9988
H31.01861.99881.7614
H41.01861.99881.7614

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.163 O2 N1 H4 120.163
H3 N1 H4 119.673
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-130.732015
Energy at 298.15K-130.734465
HF Energy-130.387925
Nuclear repulsion energy34.881756
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 MP4/6-31G*
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' 3434 3279        
2 A' 1695 1619        
3 A' 1438 1373        
4 A' 496 473        
5 A" 3573 3412        
6 A" 1295 1237        

Unscaled Zero Point Vibrational Energy (zpe) 5965.7 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 5696.0 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 MP4/6-31G*
ABC
10.49959 1.12341 1.02344

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.025 0.548 0.000
O2 -0.025 -0.738 0.000
H3 0.187 1.033 0.873
H4 0.187 1.033 -0.873

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.28511.02111.0211
O21.28511.98561.9856
H31.02111.98561.7457
H41.02111.98561.7457

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 118.403 O2 N1 H4 118.403
H3 N1 H4 117.482
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability