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All results from a given calculation for NH2OH (hydroxylamine)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-131.692770
Energy at 298.15K 
HF Energy-131.692770
Nuclear repulsion energy39.509162
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 mPW1PW91/6-31+G**
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' 3887 3700 52.60 49.83 0.28 0.43
2 A' 3502 3333 1.47 100.24 0.11 0.19
3 A' 1694 1612 23.40 6.12 0.72 0.84
4 A' 1409 1341 29.51 2.78 0.43 0.60
5 A' 1152 1097 144.36 2.92 0.18 0.30
6 A' 981 934 17.88 12.47 0.26 0.41
7 A" 3597 3423 3.01 58.66 0.75 0.86
8 A" 1350 1285 0.02 6.34 0.75 0.86
9 A" 455 433 210.20 0.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9013.0 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 8578.6 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 mPW1PW91/6-31+G**
ABC
6.46005 0.86397 0.86132

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.010 0.697 0.000
O2 -0.010 -0.729 0.000
H3 -0.947 -0.946 0.000
H4 0.545 0.950 0.814
H5 0.545 0.950 -0.814

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.42631.89161.01701.0170
O21.42630.96191.94721.9472
H31.89160.96192.54662.5466
H41.01701.94722.54661.6275
H51.01701.94722.54661.6275

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 103.022 O2 N1 H4 104.431
O2 N1 H5 104.431 H4 N1 H5 106.292
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.634      
2 O -0.360      
3 H 0.366      
4 H 0.314      
5 H 0.314      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.139 0.630 0.000 0.645
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.410 4.173 0.000
y 4.173 -12.931 0.000
z 0.000 0.000 -11.723
Traceless
 xyz
x 0.917 4.173 0.000
y 4.173 -1.364 0.000
z 0.000 0.000 0.447
Polar
3z2-r20.895
x2-y21.521
xy4.173
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.089 0.232 0.000
y 0.232 2.613 0.000
z 0.000 0.000 2.026


<r2> (average value of r2) Å2
<r2> 20.683
(<r2>)1/2 4.548