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: mPW1PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-517.389516
Energy at 298.15K 
HF Energy-517.389516
Nuclear repulsion energy50.038332
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 mPW1PW91/cc-pVDZ
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 3493 3348 5.00      
2 A1 2075 1988 2577.57      
3 A1 1138 1091 69.85      
4 A1 230 220 48.87      
5 E 3628 3477 20.94      
5 E 3628 3477 20.94      
6 E 1656 1587 18.41      
6 E 1656 1587 18.41      
7 E 916 878 54.00      
7 E 916 878 53.99      
8 E 257 247 17.80      
8 E 257 247 17.80      

Unscaled Zero Point Vibrational Energy (zpe) 9925.0 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9511.2 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 mPW1PW91/cc-pVDZ
ABC
6.24118 0.15317 0.15317

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.843
Cl2 0.000 0.000 1.163
H3 0.000 0.945 -2.226
H4 0.819 -0.473 -2.226
H5 -0.819 -0.473 -2.226
H6 0.000 0.000 -0.203

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N13.00611.01981.01981.01981.6394
Cl23.00613.51843.51843.51841.3667
H31.01983.51841.63711.63712.2324
H41.01983.51841.63711.63712.2324
H51.01983.51841.63711.63712.2324
H61.63941.36672.23242.23242.2324

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 106.767
H3 N1 H5 106.767 H3 N1 H6 112.057
H4 N1 H5 106.767 H4 N1 H6 112.057
H5 N1 H6 112.057
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.200      
2 Cl -0.376      
3 H 0.121      
4 H 0.121      
5 H 0.121      
6 H 0.213      


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 -5.566 5.566
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.749 0.000 0.000
y 0.000 -19.749 0.000
z 0.000 0.000 -14.315
Traceless
 xyz
x -2.717 0.000 0.000
y 0.000 -2.717 0.000
z 0.000 0.000 5.434
Polar
3z2-r210.868
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 2.272 0.000 0.000
y 0.000 2.272 0.000
z 0.000 0.000 4.621


<r2> (average value of r2) Å2
<r2> 75.564
(<r2>)1/2 8.693