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-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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-517.430443
Energy at 298.15K 
HF Energy-517.430443
Nuclear repulsion energy50.127398
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-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 3517 3373 1.92      
2 A1 2057 1973 2479.01      
3 A1 1118 1072 105.87      
4 A1 210 202 50.51      
5 E 3647 3498 20.37      
5 E 3647 3498 20.37      
6 E 1666 1598 23.71      
6 E 1666 1598 23.71      
7 E 894 857 35.62      
7 E 894 857 35.62      
8 E 262 251 15.74      
8 E 262 251 15.74      

Unscaled Zero Point Vibrational Energy (zpe) 9919.0 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 9514.3 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-pVTZ
ABC
6.24942 0.15271 0.15271

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.852
Cl2 0.000 0.000 1.164
H3 0.000 0.945 -2.212
H4 0.818 -0.472 -2.212
H5 -0.818 -0.472 -2.212
H6 0.000 0.000 -0.190

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N13.01561.01091.01091.01091.6614
Cl23.01563.50563.50563.50561.3542
H31.01093.50561.63601.63602.2314
H41.01093.50561.63601.63602.2314
H51.01093.50561.63601.63602.2314
H61.66141.35422.23142.23142.2314

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 108.029
H3 N1 H5 108.029 H3 N1 H6 110.877
H4 N1 H5 108.029 H4 N1 H6 110.877
H5 N1 H6 110.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.309      
2 Cl -0.360      
3 H 0.152      
4 H 0.152      
5 H 0.152      
6 H 0.212      


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 -5.115 5.115
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.983 0.000 0.000
y 0.000 -19.983 0.000
z 0.000 0.000 -15.044
Traceless
 xyz
x -2.470 0.000 0.000
y 0.000 -2.470 0.000
z 0.000 0.000 4.939
Polar
3z2-r29.878
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 3.104 0.000 0.000
y 0.000 3.104 0.000
z 0.000 0.000 5.500


<r2> (average value of r2) Å2
<r2> 75.876
(<r2>)1/2 8.711