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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-514.965397
Energy at 298.15K 
HF Energy-514.965397
Nuclear repulsion energy51.441202
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 mPW1PW91/3-21G*
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 3436 3263 12.64      
2 A1 1228 1166 2847.62      
3 A1 1201 1140 756.71      
4 A1 409 389 53.87      
5 E 3583 3402 39.02      
5 E 3583 3402 39.02      
6 E 1734 1646 35.04      
6 E 1734 1646 35.04      
7 E 1312 1246 94.08      
7 E 1312 1246 94.08      
8 E 368 350 11.44      
8 E 368 350 11.44      

Unscaled Zero Point Vibrational Energy (zpe) 10133.4 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 9622.7 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 mPW1PW91/3-21G*
ABC
5.88924 0.16882 0.16882

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.758
Cl2 0.000 0.000 1.111
H3 0.000 0.973 -2.071
H4 0.843 -0.487 -2.071
H5 -0.843 -0.487 -2.071
H6 0.000 0.000 -0.364

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.86851.02231.02231.02231.3933
Cl22.86853.32753.32753.32751.4752
H31.02233.32751.68531.68531.9647
H41.02233.32751.68531.68531.9647
H51.02233.32751.68531.68531.9647
H61.39331.47521.96471.96471.9647

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 111.031
H3 N1 H5 111.031 H3 N1 H6 107.863
H4 N1 H5 111.031 H4 N1 H6 107.863
H5 N1 H6 107.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.818      
2 Cl -0.530      
3 H 0.352      
4 H 0.352      
5 H 0.352      
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 -7.419 7.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.765 0.000 0.000
y 0.000 -19.765 0.000
z 0.000 0.000 -14.199
Traceless
 xyz
x -2.783 0.000 0.000
y 0.000 -2.783 0.000
z 0.000 0.000 5.565
Polar
3z2-r211.131
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 1.918 0.000 0.000
y 0.000 1.918 0.000
z 0.000 0.000 4.148


<r2> (average value of r2) Å2
<r2> 69.631
(<r2>)1/2 8.345