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: wB97X-D/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-56.546315
Energy at 298.15K-56.548963
HF Energy-56.546315
Nuclear repulsion energy11.933890
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 wB97X-D/6-31+G**
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 3535 3366 1.33 119.47 0.03 0.06
2 A1 991 943 260.03 4.25 0.74 0.85
3 E 3688 3512 5.73 47.99 0.75 0.86
3 E 3688 3512 5.73 48.01 0.75 0.86
4 E 1679 1599 31.12 5.25 0.75 0.86
4 E 1679 1599 31.18 5.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7629.6 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 7265.7 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 wB97X-D/6-31+G**
ABC
10.06317 10.06317 6.19390

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.107
H2 0.000 0.949 -0.249
H3 0.822 -0.474 -0.249
H4 -0.822 -0.474 -0.249

Atom - Atom Distances (Å)
  N1 H2 H3 H4
N11.01321.01321.0132
H21.01321.64331.6433
H31.01321.64331.6433
H41.01321.64331.6433

picture of Ammonia state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 N1 H3 108.378 H2 N1 H4 108.378
H3 N1 H4 108.378
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.911      
2 H 0.304      
3 H 0.304      
4 H 0.304      


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 -1.797 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.176 0.000 0.000
y 0.000 -6.176 0.000
z 0.000 0.000 -9.706
Traceless
 xyz
x 1.765 0.000 0.000
y 0.000 1.765 0.000
z 0.000 0.000 -3.530
Polar
3z2-r2-7.059
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 1.488 0.000 0.000
y 0.000 1.488 0.000
z 0.000 0.000 1.726


<r2> (average value of r2) Å2
<r2> 7.558
(<r2>)1/2 2.749