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: BLYP/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 BLYP/6-31+G**
 hartrees
Energy at 0K-131.700039
Energy at 298.15K 
HF Energy-131.700039
Nuclear repulsion energy38.422503
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 BLYP/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' 3663 3644 35.53 52.29 0.28 0.44
2 A' 3315 3298 4.66 108.87 0.11 0.20
3 A' 1615 1607 21.81 6.56 0.73 0.84
4 A' 1343 1336 23.43 3.25 0.31 0.47
5 A' 1110 1104 121.95 1.95 0.14 0.25
6 A' 836 832 12.96 16.23 0.25 0.40
7 A" 3404 3386 0.32 65.36 0.75 0.86
8 A" 1269 1263 0.01 7.11 0.75 0.86
9 A" 418 415 197.41 0.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8486.9 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 8441.9 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 BLYP/6-31+G**
ABC
6.17963 0.80883 0.80819

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.727 0.000
O2 -0.011 -0.756 0.000
H3 -0.969 -0.951 0.000
H4 0.570 0.954 0.820
H5 0.570 0.954 -0.820

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.48251.93201.03091.0309
O21.48250.97761.98391.9839
H31.93200.97762.58342.5834
H41.03091.98392.58341.6402
H51.03091.98392.58341.6402

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 101.522 O2 N1 H4 102.756
O2 N1 H5 102.756 H4 N1 H5 105.405
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.612      
2 O -0.341      
3 H 0.349      
4 H 0.302      
5 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.186 0.652 0.000 0.678
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.678 4.168 0.000
y 4.168 -13.387 0.000
z 0.000 0.000 -12.134
Traceless
 xyz
x 1.083 4.168 0.000
y 4.168 -1.481 0.000
z 0.000 0.000 0.398
Polar
3z2-r20.797
x2-y21.710
xy4.168
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.341 0.228 0.000
y 0.228 2.939 0.000
z 0.000 0.000 2.225


<r2> (average value of r2) Å2
<r2> 21.675
(<r2>)1/2 4.656