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All results from a given calculation for HNO2 (Nitrous acid)

using model chemistry: B97D3/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-205.687196
Energy at 298.15K-205.689391
HF Energy-205.687196
Nuclear repulsion energy68.562232
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 B97D3/aug-cc-pVTZ
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' 3673 3616 54.38      
2 A' 1744 1718 211.78      
3 A' 1228 1209 153.12      
4 A' 751 740 78.55      
5 A' 517 509 174.37      
6 A" 578 570 89.11      

Unscaled Zero Point Vibrational Energy (zpe) 4245.7 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 4180.7 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 B97D3/aug-cc-pVTZ
ABC
3.04615 0.40139 0.35465

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.771 -0.226 0.000
O2 0.897 -0.652 0.000
N3 0.000 0.534 0.000
O4 -1.118 0.213 0.000

Atom - Atom Distances (Å)
  H1 O2 N3 O4
H10.97261.92782.9229
O20.97261.48702.1928
N31.92781.48701.1637
O42.92292.19281.1637

picture of Nitrous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 N3 101.150 O2 N3 O4 111.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.223      
2 O -0.234      
3 N 0.229      
4 O -0.217      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.570 0.646 0.000 1.698
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.594 0.412 0.000
y 0.412 -18.384 0.000
z 0.000 0.000 -16.242
Traceless
 xyz
x 3.719 0.412 0.000
y 0.412 -3.466 0.000
z 0.000 0.000 -0.253
Polar
3z2-r2-0.505
x2-y24.790
xy0.412
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.655 -0.721 0.000
y -0.721 3.102 0.000
z 0.000 0.000 2.247


<r2> (average value of r2) Å2
<r2> 35.427
(<r2>)1/2 5.952