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All results from a given calculation for NH2OH (hydroxylamine)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-130.256442
Energy at 298.15K 
HF Energy-130.256442
Nuclear repulsion energy38.826577
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 HF/3-21G*
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' 3857 3482 24.24 89.31 0.34 0.51
2 A' 3605 3254 0.36 107.50 0.15 0.26
3 A' 1845 1665 21.50 11.21 0.66 0.79
4 A' 1495 1349 30.22 7.29 0.66 0.80
5 A' 1195 1079 165.49 4.60 0.73 0.84
6 A' 1064 960 28.95 25.91 0.17 0.29
7 A" 3704 3343 0.00 62.60 0.75 0.86
8 A" 1392 1257 0.17 10.95 0.75 0.86
9 A" 450 407 267.28 9.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9303.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 8397.5 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 HF/3-21G*
ABC
6.47299 0.82213 0.81732

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.007 0.719 0.000
O2 -0.007 -0.750 0.000
H3 -0.948 -0.972 0.000
H4 0.523 0.967 0.822
H5 0.523 0.967 -0.822

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.46921.93591.00871.0087
O21.46920.96691.97551.9755
H31.93590.96692.56882.5688
H41.00871.97552.56881.6443
H51.00871.97552.56881.6443

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 103.316 O2 N1 H4 104.193
O2 N1 H5 104.193 H4 N1 H5 109.182
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.497      
2 O -0.545      
3 H 0.400      
4 H 0.321      
5 H 0.321      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.084 0.816 0.000 0.820
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.660 4.266 0.000
y 4.266 -12.047 0.000
z 0.000 0.000 -10.941
Traceless
 xyz
x 0.834 4.266 0.000
y 4.266 -1.247 0.000
z 0.000 0.000 0.413
Polar
3z2-r20.826
x2-y21.388
xy4.266
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.244 0.591 0.000
y 0.591 2.129 0.000
z 0.000 0.000 1.217


<r2> (average value of r2) Å2
<r2> 20.737
(<r2>)1/2 4.554