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All results from a given calculation for NH2OH (hydroxylamine)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-131.655376
Energy at 298.15K-131.651186
HF Energy-131.723201
Nuclear repulsion energy39.223612
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(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' 3807 3674 28.53 59.52 0.29 0.45
2 A' 3423 3303 2.12 100.44 0.11 0.20
3 A' 1669 1611 12.65 9.36 0.53 0.70
4 A' 1420 1370 23.40 3.44 0.74 0.85
5 A' 1170 1129 129.38 2.24 0.75 0.86
6 A' 942 909 11.26 11.10 0.18 0.31
7 A" 3501 3379 0.23 57.27 0.75 0.86
8 A" 1334 1288 0.01 7.41 0.75 0.86
9 A" 391 377 156.35 3.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8828.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 8519.4 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(2df,p)
ABC
6.38159 0.84769 0.84746

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.706 0.000
O2 -0.011 -0.737 0.000
H3 -0.953 -0.938 0.000
H4 0.563 0.946 0.809
H5 0.563 0.946 -0.809

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.44311.89431.02041.0204
O21.44310.96271.95391.9539
H31.89430.96272.54972.5497
H41.02041.95392.54971.6173
H51.02041.95392.54971.6173

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 103.124 O2 N1 H4 105.246
O2 N1 H5 105.246 H4 N1 H5 105.763
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.389      
2 O -0.417      
3 H 0.304      
4 H 0.251      
5 H 0.251      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.112 0.519 0.000 0.531
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> 20.517
(<r2>)1/2 4.530