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All results from a given calculation for NH2OH (hydroxylamine)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-131.669571
Energy at 298.15K 
HF Energy-131.669571
Nuclear repulsion energy39.472310
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 mPW1PW91/6-31G*
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' 3819 3621 30.31 64.52 0.31 0.47
2 A' 3465 3285 2.89 106.18 0.13 0.22
3 A' 1726 1637 17.93 12.39 0.57 0.73
4 A' 1458 1382 23.49 5.10 0.74 0.85
5 A' 1200 1138 149.52 3.09 0.74 0.85
6 A' 994 943 12.91 11.52 0.18 0.31
7 A" 3559 3375 0.82 63.06 0.75 0.86
8 A" 1371 1300 0.01 10.16 0.75 0.86
9 A" 430 408 197.29 4.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9010.9 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 8545.0 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 mPW1PW91/6-31G*
ABC
6.38817 0.86287 0.86283

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.699 0.000
O2 -0.011 -0.730 0.000
H3 -0.955 -0.932 0.000
H4 0.560 0.940 0.809
H5 0.560 0.940 -0.809

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.42841.88451.01911.0191
O21.42840.96521.94111.9411
H31.88450.96522.54032.5403
H41.01911.94112.54031.6184
H51.01911.94112.54031.6184

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 102.124 O2 N1 H4 103.684
O2 N1 H5 103.684 H4 N1 H5 105.126
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.528      
2 O -0.564      
3 H 0.426      
4 H 0.333      
5 H 0.333      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.161 0.554 0.000 0.577
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.758 3.900 0.000
y 3.900 -12.390 0.000
z 0.000 0.000 -11.326
Traceless
 xyz
x 1.100 3.900 0.000
y 3.900 -1.348 0.000
z 0.000 0.000 0.248
Polar
3z2-r20.496
x2-y21.632
xy3.900
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.631 0.450 0.000
y 0.450 2.167 0.000
z 0.000 0.000 1.588


<r2> (average value of r2) Å2
<r2> 20.340
(<r2>)1/2 4.510