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 NH3 (Ammonia)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-56.531179
Energy at 298.15K-56.533852
HF Energy-56.531179
Nuclear repulsion energy11.968908
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 B1B95/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3510 3364 0.53 110.10 0.07 0.14
2 A1 1134 1087 208.39 3.32 0.10 0.18
3 E 3639 3489 0.38 51.64 0.75 0.86
3 E 3639 3489 0.38 51.64 0.75 0.86
4 E 1758 1685 28.61 8.30 0.75 0.86
4 E 1758 1685 28.61 8.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7718.8 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 7399.3 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 B1B95/6-311G*
ABC
9.98557 9.98557 6.36224

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.115
H2 0.000 0.936 -0.268
H3 0.811 -0.468 -0.268
H4 -0.811 -0.468 -0.268

Atom - Atom Distances (Å)
  N1 H2 H3 H4
N11.01121.01121.0112
H21.01121.62141.6214
H31.01121.62141.6214
H41.01121.62141.6214

picture of Ammonia state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 N1 H3 106.596 H2 N1 H4 106.596
H3 N1 H4 106.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.986      
2 H 0.329      
3 H 0.329      
4 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.860 1.860
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.112 0.000 0.000
y 0.000 -6.112 0.000
z 0.000 0.000 -9.022
Traceless
 xyz
x 1.455 0.000 0.000
y 0.000 1.455 0.000
z 0.000 0.000 -2.910
Polar
3z2-r2-5.820
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.430 0.000 0.000
y 0.000 1.430 0.000
z 0.000 0.000 1.082


<r2> (average value of r2) Å2
<r2> 7.359
(<r2>)1/2 2.713