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: B2PLYP=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-131.689728
Energy at 298.15K 
HF Energy-131.525978
Nuclear repulsion energy39.351501
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 B2PLYP=FULL/6-311+G(3df,2p)
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' 3858 3858 48.42 53.37 0.23 0.37
2 A' 3486 3486 1.31 103.12 0.08 0.16
3 A' 1677 1677 16.38 3.38 0.62 0.76
4 A' 1405 1405 28.61 2.64 0.24 0.39
5 A' 1153 1153 126.89 1.80 0.10 0.18
6 A' 938 938 12.82 13.16 0.23 0.37
7 A" 3569 3569 4.30 49.67 0.75 0.86
8 A" 1340 1340 0.10 3.33 0.75 0.86
9 A" 424 424 170.55 0.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8925.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8925.5 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 B2PLYP=FULL/6-311+G(3df,2p)
ABC
6.47126 0.85252 0.85063

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.010 0.703 0.000
O2 -0.010 -0.735 0.000
H3 -0.946 -0.946 0.000
H4 0.547 0.951 0.811
H5 0.547 0.951 -0.811

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.43841.89651.01431.0143
O21.43840.95951.95171.9517
H31.89650.95952.54652.5465
H41.01431.95172.54651.6213
H51.01431.95172.54651.6213

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 102.707 O2 N1 H4 104.112
O2 N1 H5 104.112 H4 N1 H5 106.111
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability