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: QCISD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-131.441495
Energy at 298.15K-131.445376
HF Energy-131.011393
Nuclear repulsion energy38.848892
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 QCISD(T)=FULL/aug-cc-pVDZ
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' 3801 3688        
2 A' 3412 3310        
3 A' 1638 1589        
4 A' 1396 1354        
5 A' 1154 1119        
6 A' 888 862        
7 A" 3502 3397        
8 A" 1319 1279        
9 A" 402 390        

Unscaled Zero Point Vibrational Energy (zpe) 8755.5 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 8493.7 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
6.27695 0.82946 0.82892

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.012 0.716 0.000
O2 -0.012 -0.746 0.000
H3 -0.958 -0.943 0.000
H4 0.569 0.947 0.814
H5 0.569 0.947 -0.814

Atom - Atom Distances (Å)
  N1 O2 H3 H4 H5
N11.46201.91011.02661.0266
O21.46200.96681.96581.9658
H31.91010.96682.56262.5626
H41.02661.96582.56261.6283
H51.02661.96582.56261.6283

picture of hydroxylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 H3 101.766 O2 N1 H4 102.955
O2 N1 H5 102.955 H4 N1 H5 104.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability