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All results from a given calculation for H2NO (nitroxide)

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-130.799592
Energy at 298.15K 
HF Energy-130.405928
Nuclear repulsion energy35.416821
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 MP2/6-31G(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 3517 3322 11.50      
2 A1 1698 1604 13.58      
3 A1 1538 1453 26.46      
4 B1 96i 91i 167.52      
5 B2 3668 3465 10.85      
6 B2 1289 1218 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 5807.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 5485.2 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 MP2/6-31G(2df,p)
ABC
10.95317 1.16201 1.05056

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.533
O2 0.000 0.000 0.727
H3 0.000 0.874 -1.044
H4 0.000 -0.874 -1.044

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26051.01241.0124
O21.26051.97551.9755
H31.01241.97551.7476
H41.01241.97551.7476

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.331 O2 N1 H4 120.331
H3 N1 H4 119.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-130.799593
Energy at 298.15K-130.801627
HF Energy-130.405988
Nuclear repulsion energy35.416353
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 MP2/6-31G(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' 3514 3319 11.29      
2 A' 1698 1604 13.95      
3 A' 1538 1453 25.59      
4 A' 138 130 167.83      
5 A" 3665 3462 10.48      
6 A" 1291 1219 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 5922.0 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 5593.3 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 MP2/6-31G(2df,p)
ABC
10.93364 1.16206 1.05099

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.006 0.533 0.000
O2 -0.006 -0.727 0.000
H3 0.047 1.043 0.873
H4 0.047 1.043 -0.873

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.26051.01261.0126
O21.26051.97461.9746
H31.01261.97461.7467
H41.01261.97461.7467

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.222 O2 N1 H4 120.222
H3 N1 H4 119.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability