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: PBE1PBE/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-517.205223
Energy at 298.15K 
HF Energy-517.205223
Nuclear repulsion energy50.312024
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/aug-cc-pVTZ
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 3509 3374 1.04      
2 A1 1963 1887 2722.35      
3 A1 1117 1074 108.83      
4 A1 210 202 63.06      
5 E 3639 3498 25.26      
5 E 3639 3498 25.26      
6 E 1656 1592 24.19      
6 E 1656 1592 24.19      
7 E 920 884 26.31      
7 E 920 884 26.31      
8 E 269 259 12.56      
8 E 269 259 12.56      

Unscaled Zero Point Vibrational Energy (zpe) 9881.2 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 9500.8 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/aug-cc-pVTZ
ABC
6.22788 0.15479 0.15479

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.838
Cl2 0.000 0.000 1.157
H3 0.000 0.946 -2.197
H4 0.819 -0.473 -2.197
H5 -0.819 -0.473 -2.197
H6 0.000 0.000 -0.207

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.99441.01221.01221.01221.6312
Cl22.99443.48493.48493.48491.3632
H31.01223.48491.63881.63882.2042
H41.01223.48491.63881.63882.2042
H51.01223.48491.63881.63882.2042
H61.63121.36322.20422.20422.2042

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 108.101
H3 N1 H5 108.101 H3 N1 H6 110.809
H4 N1 H5 108.101 H4 N1 H6 110.809
H5 N1 H6 110.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.104      
2 Cl -0.367      
3 H 0.086      
4 H 0.086      
5 H 0.086      
6 H 0.214      


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 -5.065 5.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.319 0.000 0.000
y 0.000 -20.319 0.000
z 0.000 0.000 -15.472
Traceless
 xyz
x -2.423 0.000 0.000
y 0.000 -2.423 0.000
z 0.000 0.000 4.846
Polar
3z2-r29.693
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 4.277 0.000 0.000
y 0.000 4.277 0.000
z 0.000 0.000 6.673


<r2> (average value of r2) Å2
<r2> 75.279
(<r2>)1/2 8.676