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-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 PBE1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-517.175567
Energy at 298.15K 
HF Energy-517.175567
Nuclear repulsion energy50.465402
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-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 3498 3364 1.26      
2 A1 1844 1774 2990.83      
3 A1 1127 1084 81.46      
4 A1 221 212 80.42      
5 E 3638 3498 24.83      
5 E 3638 3498 24.83      
6 E 1630 1568 23.95      
6 E 1630 1568 23.95      
7 E 959 923 25.96      
7 E 959 922 25.96      
8 E 278 267 12.90      
8 E 278 267 12.91      

Unscaled Zero Point Vibrational Energy (zpe) 9850.8 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 9472.5 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-pVDZ
ABC
6.21532 0.15720 0.15720

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.819
Cl2 0.000 0.000 1.149
H3 0.000 0.947 -2.188
H4 0.820 -0.474 -2.188
H5 -0.820 -0.474 -2.188
H6 0.000 0.000 -0.235

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.96831.01651.01651.01651.5844
Cl22.96833.46903.46903.46901.3839
H31.01653.46901.64051.64052.1708
H41.01653.46901.64051.64052.1708
H51.01653.46901.64051.64052.1708
H61.58441.38392.17082.17082.1708

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 107.602
H3 N1 H5 107.602 H3 N1 H6 111.282
H4 N1 H5 107.602 H4 N1 H6 111.282
H5 N1 H6 111.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.134      
2 Cl -0.387      
3 H 0.033      
4 H 0.033      
5 H 0.033      
6 H 0.423      


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 -5.367 5.367
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.426 0.000 0.000
y 0.000 -20.426 0.000
z 0.000 0.000 -15.290
Traceless
 xyz
x -2.568 0.000 0.000
y 0.000 -2.568 0.000
z 0.000 0.000 5.136
Polar
3z2-r210.271
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 4.087 0.000 0.000
y 0.000 4.087 0.000
z 0.000 0.000 6.656


<r2> (average value of r2) Å2
<r2> 74.410
(<r2>)1/2 8.626