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 NH2NO (Nitrosamide)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-184.849957
Energy at 298.15K-184.853632
HF Energy-184.849957
Nuclear repulsion energy73.826895
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 HF/6-31G(2df,p)
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 3958 3584 71.83      
2 A 3766 3410 36.09      
3 A 1872 1695 187.82      
4 A 1760 1594 110.88      
5 A 1378 1248 125.30      
6 A 1235 1119 102.74      
7 A 741 671 9.95      
8 A 689 624 5.78      
9 A 337 305 310.48      

Unscaled Zero Point Vibrational Energy (zpe) 7867.8 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 7124.3 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 HF/6-31G(2df,p)
ABC
2.88119 0.44686 0.38810

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.094 0.215 0.006
N2 -0.152 -0.488 0.004
N3 1.003 0.140 -0.050
H4 0.999 1.125 0.109
H5 1.797 -0.411 0.168

Atom - Atom Distances (Å)
  O1 N2 N3 H4 H5
O11.17622.09902.28422.9628
N21.17621.31511.98381.9570
N32.09901.31510.99780.9910
H42.28421.98380.99781.7320
H52.96281.95700.99101.7320

picture of Nitrosamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 N3 114.700 N2 N3 H4 117.459
N2 N3 H5 115.403 H4 N3 H5 121.122
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.406      
2 N 0.246      
3 N -0.454      
4 H 0.300      
5 H 0.314      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.371 0.594 0.593 3.474
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.438 0.309 1.012
y 0.309 -16.200 0.153
z 1.012 0.153 -17.246
Traceless
 xyz
x 1.285 0.309 1.012
y 0.309 0.142 0.153
z 1.012 0.153 -1.427
Polar
3z2-r2-2.854
x2-y20.762
xy0.309
xz1.012
yz0.153


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.932 -0.102 0.009
y -0.102 2.386 0.005
z 0.009 0.005 1.621


<r2> (average value of r2) Å2
<r2> 34.849
(<r2>)1/2 5.903