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All results from a given calculation for NH4Cl (Ammonium chloride)

using model chemistry: PBE1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-514.738694
Energy at 298.15K 
HF Energy-514.738694
Nuclear repulsion energy51.447316
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 PBE1PBE/3-21G
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 3428 3292 12.22      
2 A1 1238 1189 3141.29      
3 A1 1201 1153 471.03      
4 A1 415 398 46.01      
5 E 3575 3434 39.37      
5 E 3575 3434 39.37      
6 E 1729 1661 34.62      
6 E 1729 1661 34.62      
7 E 1316 1264 93.80      
7 E 1316 1264 93.80      
8 E 365 351 11.27      
8 E 365 351 11.27      

Unscaled Zero Point Vibrational Energy (zpe) 10126.4 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 9725.4 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 PBE1PBE/3-21G
ABC
5.87762 0.16906 0.16906

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.756
Cl2 0.000 0.000 1.110
H3 0.000 0.974 -2.070
H4 0.843 -0.487 -2.070
H5 -0.843 -0.487 -2.070
H6 0.000 0.000 -0.369

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.86611.02351.02351.02351.3874
Cl22.86613.32633.32633.32631.4787
H31.02353.32631.68701.68701.9608
H41.02353.32631.68701.68701.9608
H51.02353.32631.68701.68701.9608
H61.38741.47871.96081.96081.9608

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 111.004
H3 N1 H5 111.004 H3 N1 H6 107.891
H4 N1 H5 111.004 H4 N1 H6 107.891
H5 N1 H6 107.891
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.819      
2 Cl -0.532      
3 H 0.353      
4 H 0.353      
5 H 0.353      
6 H 0.293      


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 -7.463 7.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.801 0.000 0.000
y 0.000 -19.801 0.000
z 0.000 0.000 -14.217
Traceless
 xyz
x -2.792 0.000 0.000
y 0.000 -2.792 0.000
z 0.000 0.000 5.584
Polar
3z2-r211.168
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 1.926 0.000 0.000
y 0.000 1.926 0.000
z 0.000 0.000 4.158


<r2> (average value of r2) Å2
<r2> 69.580
(<r2>)1/2 8.341