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All results from a given calculation for H2NO (nitroxide)

using model chemistry: MP4=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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-130.737071
Energy at 298.15K 
HF Energy-130.386875
Nuclear repulsion energy34.934158
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=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3468 3335        
2 A1 1697 1632        
3 A1 1457 1401        
4 B1 369i 355i        
5 B2 3611 3472        
6 B2 1275 1226        

Unscaled Zero Point Vibrational Energy (zpe) 5569.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 5355.6 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=FULL/6-31G*
ABC
10.78723 1.12661 1.02007

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/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
N11.28171.01851.0185
O21.28171.99801.9980
H31.01851.99801.7610
H41.01851.99801.7610

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.169 O2 N1 H4 120.169
H3 N1 H4 119.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP4=FULL/6-31G*
 hartrees
Energy at 0K-130.737376
Energy at 298.15K-130.739823
HF Energy-130.387959
Nuclear repulsion energy34.901879
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=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3435 3303        
2 A' 1697 1632        
3 A' 1441 1386        
4 A' 492 473        
5 A" 3574 3437        
6 A" 1296 1247        

Unscaled Zero Point Vibrational Energy (zpe) 5967.4 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 5738.2 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 MP4=FULL/6-31G*
ABC
10.51002 1.12491 1.02461

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.025 0.547 0.000
O2 -0.025 -0.737 0.000
H3 0.185 1.033 0.873
H4 0.185 1.033 -0.873

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.28421.02091.0209
O21.28421.98501.9850
H31.02091.98501.7456
H41.02091.98501.7456

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 118.448 O2 N1 H4 118.448
H3 N1 H4 117.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability