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

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-26.670663
Energy at 298.15K 
HF Energy-26.670663
Nuclear repulsion energy23.926426
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 HF/CEP-31G
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 3685 3322 42.07 94.89 0.04 0.08
2 A1 1903 1715 4394.31 258.86 0.25 0.40
3 A1 1538 1387 10.61 16.34 0.35 0.52
4 A1 387 349 207.74 0.34 0.74 0.85
5 E 3843 3464 83.03 42.36 0.75 0.86
5 E 3843 3464 83.03 42.36 0.75 0.86
6 E 1841 1659 10.64 8.49 0.75 0.86
6 E 1841 1659 10.64 8.49 0.75 0.86
7 E 1722 1552 157.28 10.53 0.75 0.86
7 E 1722 1552 157.28 10.53 0.75 0.86
8 E 386 348 4.58 14.06 0.75 0.86
8 E 386 348 4.58 14.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11548.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 10409.4 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 HF/CEP-31G
ABC
6.08992 0.16563 0.16563

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.761
Cl2 0.000 0.000 1.130
H3 0.000 0.957 -2.080
H4 0.829 -0.478 -2.080
H5 -0.829 -0.478 -2.080
H6 0.000 0.000 -0.642

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.89111.00861.00861.00861.1187
Cl22.89113.34963.34963.34961.7724
H31.00863.34961.65731.65731.7269
H41.00863.34961.65731.65731.7269
H51.00863.34961.65731.65731.7269
H61.11871.77241.72691.72691.7269

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 110.489
H3 N1 H5 110.489 H3 N1 H6 108.434
H4 N1 H5 110.489 H4 N1 H6 108.434
H5 N1 H6 108.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.685      
2 Cl -0.656      
3 H 0.369      
4 H 0.369      
5 H 0.369      
6 H 0.234      


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 -10.480 10.480
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.604 0.000 0.000
y 0.000 -19.604 0.000
z 0.000 0.000 -13.829
Traceless
 xyz
x -2.887 0.000 0.000
y 0.000 -2.887 0.000
z 0.000 0.000 5.775
Polar
3z2-r211.550
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 1.312 0.000 0.000
y 0.000 1.312 0.000
z 0.000 0.000 4.471


<r2> (average value of r2) Å2
<r2> 51.626
(<r2>)1/2 7.185