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: PBE1PBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-131.578508
Energy at 298.15K 
HF Energy-131.578508
Nuclear repulsion energy39.590068
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 PBE1PBE/6-31G(2df,p)
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' 3873 3707 35.36 56.63 0.28 0.44
2 A' 3469 3320 2.00 97.59 0.11 0.20
3 A' 1682 1609 13.17 8.71 0.54 0.70
4 A' 1435 1373 25.90 3.01 0.74 0.85
5 A' 1178 1127 134.53 2.50 0.74 0.85
6 A' 994 951 13.91 9.67 0.17 0.29
7 A" 3554 3401 0.00 55.13 0.75 0.86
8 A" 1355 1297 0.00 6.86 0.75 0.86
9 A" 407 390 159.87 2.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8973.4 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 8587.5 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 PBE1PBE/6-31G(2df,p)
ABC
6.44094 0.86807 0.86759

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.695 0.000
O2 -0.011 -0.728 0.000
H3 -0.949 -0.932 0.000
H4 0.558 0.944 0.807
H5 0.558 0.944 -0.807

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.42301.87801.01851.0185
O21.42300.95951.94141.9414
H31.87800.95952.53762.5376
H41.01851.94142.53761.6148
H51.01851.94142.53761.6148

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 102.297 O2 N1 H4 104.115
O2 N1 H5 104.115 H4 N1 H5 104.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.409      
2 O -0.453      
3 H 0.322      
4 H 0.270      
5 H 0.270      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.106 0.504 0.000 0.516
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.772 3.619 0.000
y 3.619 -12.184 0.000
z 0.000 0.000 -11.292
Traceless
 xyz
x 0.966 3.619 0.000
y 3.619 -1.152 0.000
z 0.000 0.000 0.186
Polar
3z2-r20.372
x2-y21.411
xy3.619
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.858 0.412 0.000
y 0.412 2.372 0.000
z 0.000 0.000 1.832


<r2> (average value of r2) Å2
<r2> 20.228
(<r2>)1/2 4.498