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/SDD

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/SDD
 hartrees
Energy at 0K-184.775962
Energy at 298.15K-184.779848
HF Energy-184.775962
Nuclear repulsion energy72.162781
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/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 4010 3610 93.41      
2 A 3803 3424 64.46      
3 A 1801 1622 69.86      
4 A 1673 1506 202.82      
5 A 1346 1212 264.96      
6 A 1257 1131 79.16      
7 A 738 664 107.14      
8 A 669 603 5.80      
9 A 618 556 392.58      

Unscaled Zero Point Vibrational Energy (zpe) 7956.5 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 7164.0 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/SDD
ABC
2.81278 0.42488 0.36912

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.133 0.216 0.000
N2 -0.137 -0.499 0.000
N3 1.019 0.146 -0.000
H4 1.040 1.144 0.001
H5 1.844 -0.404 0.001

Atom - Atom Distances (Å)
  O1 N2 N3 H4 H5
O11.22622.15312.36253.0405
N21.22621.32342.02041.9827
N32.15311.32340.99810.9912
H42.36252.02040.99811.7440
H53.04051.98270.99121.7440

picture of Nitrosamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 N3 115.182 N2 N3 H4 120.349
N2 N3 H5 117.154 H4 N3 H5 122.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.373      
2 N 0.259      
3 N -0.656      
4 H 0.379      
5 H 0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.266 0.662 0.005 4.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.471 0.614 0.007
y 0.614 -16.737 0.001
z 0.007 0.001 -17.855
Traceless
 xyz
x 0.826 0.614 0.007
y 0.614 0.425 0.001
z 0.007 0.001 -1.251
Polar
3z2-r2-2.502
x2-y20.267
xy0.614
xz0.007
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.111 -0.275 0.000
y -0.275 2.133 0.000
z 0.000 0.000 1.004


<r2> (average value of r2) Å2
<r2> 36.515
(<r2>)1/2 6.043