return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2NO (nitroxide)

using model chemistry: G3B3

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 G3B3
 hartrees
Energy at 0K-131.010922
Energy at 298.15K-131.007117
HF Energy-131.082450
Nuclear repulsion energy34.968708
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 B3LYP/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 3422 3287 0.00      
2 A1 1691 1624 10.37      
3 A1 1405 1350 5.99      
4 B1 405i 389i 215.29      
5 B2 3543 3402 0.02      
6 B2 1265 1215 2.43      

Unscaled Zero Point Vibrational Energy (zpe) 5460.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 5243.7 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 B3LYP/6-31G*
ABC
10.82089 1.12897 1.02231

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.542
O2 0.000 0.000 0.738
H3 0.000 0.879 -1.057
H4 0.000 -0.879 -1.057

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27951.01891.0189
O21.27951.99841.9984
H31.01891.99841.7583
H41.01891.99841.7583

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 120.294 O2 N1 H4 120.294
H3 N1 H4 119.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.328      
2 O -0.335      
3 H 0.332      
4 H 0.332      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.047 3.047
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 16.988
(<r2>)1/2 4.122

Conformer 2 (CS)

Jump to S1C1
Energy calculated at G3B3
 hartrees
Energy at 0K-131.009758
Energy at 298.15K-131.012292
HF Energy-131.082925
Nuclear repulsion energy34.918781
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 B3LYP/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' 3377 3243 1.26      
2 A' 1693 1626 10.21      
3 A' 1384 1329 6.43      
4 A' 540 519 197.96      
5 A" 3493 3354 1.33      
6 A" 1295 1243 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 5890.3 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 5656.5 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 B3LYP/6-31G*
ABC
10.46861 1.12582 1.02749

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.323      
2 O -0.333      
3 H 0.328      
4 H 0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.756 2.891 0.000 2.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 17.005
(<r2>)1/2 4.124