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All results from a given calculation for H2NO (nitroxide)

using model chemistry: MP2/6-31G*

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 MP2/6-31G*
 hartrees
Energy at 0K-130.706048
Energy at 298.15K 
HF Energy-130.387307
Nuclear repulsion energy35.123434
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*
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 3498 3299 12.94      
2 A1 1717 1620 18.04      
3 A1 1525 1438 18.45      
4 B1 233i 220i 216.31      
5 B2 3645 3437 6.45      
6 B2 1288 1215 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 5720.3 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 5394.3 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*
ABC
10.84012 1.14088 1.03224

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.539
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
N11.27281.01711.0171
O21.27281.98991.9899
H31.01711.98991.7567
H41.01711.98991.7567

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.276 O2 N1 H4 120.276
H3 N1 H4 119.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-130.706093
Energy at 298.15K-130.708382
HF Energy-130.387767
Nuclear repulsion energy35.119533
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*
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' 3485 3286 11.51      
2 A' 1716 1618 20.02      
3 A' 1522 1435 14.06      
4 A' 324 305 218.27      
5 A" 3631 3424 4.96      
6 A" 1297 1223 2.09      

Unscaled Zero Point Vibrational Energy (zpe) 5987.0 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 5645.7 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 MP2/6-31G*
ABC
10.73465 1.14092 1.03448

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.015 0.540 0.000
O2 -0.015 -0.733 0.000
H3 0.112 1.043 0.876
H4 0.112 1.043 -0.876

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27331.01801.0180
O21.27331.98481.9848
H31.01801.98481.7512
H41.01801.98481.7512

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.642 O2 N1 H4 119.642
H3 N1 H4 118.656
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability