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 NH4Cl (Ammonium chloride)

using model chemistry: PBEPBE/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 PBEPBE/6-311G*
 hartrees
Energy at 0K-517.133566
Energy at 298.15K 
HF Energy-517.133566
Nuclear repulsion energy50.437579
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 PBEPBE/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 3410 3374 3.31      
2 A1 1462 1447 3041.65      
3 A1 1145 1133 0.41      
4 A1 267 264 99.40      
5 E 3538 3501 16.17      
5 E 3538 3501 16.17      
6 E 1679 1661 35.05      
6 E 1679 1661 35.05      
7 E 1052 1042 57.22      
7 E 1052 1042 57.22      
8 E 308 305 14.35      
8 E 308 305 14.34      

Unscaled Zero Point Vibrational Energy (zpe) 9719.3 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 9618.2 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 PBEPBE/6-311G*
ABC
6.08885 0.15871 0.15871

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.810
Cl2 0.000 0.000 1.145
H3 0.000 0.957 -2.169
H4 0.829 -0.478 -2.169
H5 -0.829 -0.478 -2.169
H6 0.000 0.000 -0.287

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.95451.02201.02201.02201.5223
Cl22.95453.44873.44873.44871.4322
H31.02203.44871.65741.65742.1105
H41.02203.44871.65741.65742.1105
H51.02203.44871.65741.65742.1105
H61.52231.43222.11052.11052.1105

picture of Ammonium chloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 H6 Cl2 180.000 H3 N1 H4 108.367
H3 N1 H5 108.367 H3 N1 H6 110.554
H4 N1 H5 108.367 H4 N1 H6 110.554
H5 N1 H6 110.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.947      
2 Cl -0.474      
3 H 0.372      
4 H 0.372      
5 H 0.372      
6 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 -6.470 6.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.730 0.000 0.000
y 0.000 -20.730 0.000
z 0.000 0.000 -15.334
Traceless
 xyz
x -2.698 0.000 0.000
y 0.000 -2.698 0.000
z 0.000 0.000 5.395
Polar
3z2-r210.791
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 2.427 0.000 0.000
y 0.000 2.427 0.000
z 0.000 0.000 5.541


<r2> (average value of r2) Å2
<r2> 73.966
(<r2>)1/2 8.600