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 NH2OH (hydroxylamine)

using model chemistry: B3LYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-311G**
 hartrees
Energy at 0K-131.756741
Energy at 298.15K 
HF Energy-131.756741
Nuclear repulsion energy39.180463
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/6-311G**
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' 3828 3701 36.56 53.52 0.32 0.48
2 A' 3436 3322 1.71 100.83 0.12 0.21
3 A' 1673 1617 18.52 9.28 0.65 0.79
4 A' 1407 1360 28.76 3.59 0.75 0.86
5 A' 1152 1114 132.80 1.83 0.67 0.80
6 A' 933 902 12.12 13.30 0.20 0.34
7 A" 3511 3394 0.12 59.22 0.75 0.86
8 A" 1329 1285 0.00 8.38 0.75 0.86
9 A" 420 406 191.09 4.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8843.6 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 8550.0 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 B3LYP/6-311G**
ABC
6.40332 0.84425 0.84361

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.707 0.000
O2 -0.011 -0.739 0.000
H3 -0.951 -0.940 0.000
H4 0.556 0.951 0.810
H5 0.556 0.951 -0.810

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.44641.89701.01871.0187
O21.44640.96161.95811.9581
H31.89700.96162.55052.5505
H41.01871.95812.55051.6208
H51.01871.95812.55051.6208

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 102.068 O2 N1 H4 103.823
O2 N1 H5 103.823 H4 N1 H5 105.409
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.308      
2 O -0.382      
3 H 0.266      
4 H 0.212      
5 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.113 0.627 0.000 0.637
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.982 3.858 0.000
y 3.858 -12.507 0.000
z 0.000 0.000 -11.426
Traceless
 xyz
x 0.984 3.858 0.000
y 3.858 -1.303 0.000
z 0.000 0.000 0.318
Polar
3z2-r20.637
x2-y21.525
xy3.858
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.832 0.427 0.000
y 0.427 2.378 0.000
z 0.000 0.000 1.736


<r2> (average value of r2) Å2
<r2> 20.673
(<r2>)1/2 4.547