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All results from a given calculation for H2NO (nitroxide)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-130.711800
Energy at 298.15K 
HF Energy-130.387341
Nuclear repulsion energy35.141560
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 MP2=FULL/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 3499 3297 12.66      
2 A1 1719 1619 17.74      
3 A1 1527 1439 18.90      
4 B1 227i 214i 216.18      
5 B2 3645 3435 6.40      
6 B2 1289 1215 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 5725.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5394.9 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 MP2=FULL/6-31G*
ABC
10.84509 1.14224 1.03340

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.538
O2 0.000 0.000 0.734
H3 0.000 0.878 -1.051
H4 0.000 -0.878 -1.051

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27191.01691.0169
O21.27191.98911.9891
H31.01691.98911.7563
H41.01691.98911.7563

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.283 O2 N1 H4 120.283
H3 N1 H4 119.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G*
 hartrees
Energy at 0K-130.711841
Energy at 298.15K-130.714123
HF Energy-130.387780
Nuclear repulsion energy35.138215
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 MP2=FULL/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' 3486 3285 11.31      
2 A' 1717 1618 19.64      
3 A' 1524 1436 14.68      
4 A' 317 299 217.83      
5 A" 3632 3422 4.98      
6 A" 1298 1223 2.10      

Unscaled Zero Point Vibrational Energy (zpe) 5987.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5640.9 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 MP2=FULL/6-31G*
ABC
10.74414 1.14232 1.03557

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.015 0.539 0.000
O2 -0.015 -0.733 0.000
H3 0.110 1.043 0.876
H4 0.110 1.043 -0.876

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27241.01781.0178
O21.27241.98431.9843
H31.01781.98431.7510
H41.01781.98431.7510

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.678 O2 N1 H4 119.678
H3 N1 H4 118.677
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability