return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for HNO (Nitrosyl hydride)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-129.990139
Energy at 298.15K 
HF Energy-129.729500
Nuclear repulsion energy28.217995
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 MP2/SDD
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' 3004 2900 120.82 164.11 0.36 0.53
2 A' 1491 1439 12.20 21.08 0.71 0.83
3 A' 1164 1124 8.17 3.30 0.59 0.74

Unscaled Zero Point Vibrational Energy (zpe) 2829.4 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 2731.2 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 MP2/SDD
ABC
18.16355 1.20417 1.12931

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.953 0.957 0.000
N2 0.064 0.637 0.000
O3 0.064 -0.677 0.000

Atom - Atom Distances (Å)
  H1 N2 O3
H11.06521.9243
N21.06521.3147
O31.92431.3147

picture of Nitrosyl hydride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 O3 107.451
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability