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: MP4=FULL/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 MP4=FULL/6-311G**
 hartrees
Energy at 0K-131.485014
Energy at 298.15K-131.488933
HF Energy-131.025241
Nuclear repulsion energy39.265213
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 MP4=FULL/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' 3899 3749        
2 A' 3467 3333        
3 A' 1668 1604        
4 A' 1430 1375        
5 A' 1179 1134        
6 A' 948 912        
7 A" 3550 3413        
8 A" 1334 1283        
9 A" 424 407        

Unscaled Zero Point Vibrational Energy (zpe) 8949.8 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 8605.2 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 MP4=FULL/6-311G**
ABC
6.38709 0.84895 0.84865

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.011 0.705 0.000
O2 -0.011 -0.738 0.000
H3 -0.952 -0.922 0.000
H4 0.562 0.946 0.808
H5 0.562 0.946 -0.808

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.44341.87931.01941.0194
O21.44340.95821.95371.9537
H31.87930.95822.53602.5360
H41.01941.95372.53601.6161
H51.01941.95372.53601.6161

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 101.050 O2 N1 H4 103.642
O2 N1 H5 103.642 H4 N1 H5 104.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability