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

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-513.966462
Energy at 298.15K 
HF Energy-513.777735
Nuclear repulsion energy50.296622
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 QCISD/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 3364 3261 20.12      
2 A1 1498 1451 3467.51      
3 A1 1386 1343 573.48      
4 A1 389 377 144.65      
5 E 3481 3374 55.08      
5 E 3481 3374 55.08      
6 E 1762 1708 12.86      
6 E 1762 1708 12.86      
7 E 1580 1531 133.44      
7 E 1580 1531 133.44      
8 E 359 348 3.32      
8 E 359 348 3.32      

Unscaled Zero Point Vibrational Energy (zpe) 10499.7 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 10176.3 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 QCISD/3-21G
ABC
5.85083 0.16097 0.16097

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.788
Cl2 0.000 0.000 1.145
H3 0.000 0.976 -2.114
H4 0.845 -0.488 -2.114
H5 -0.845 -0.488 -2.114
H6 0.000 0.000 -0.610

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N12.93291.02921.02921.02921.1775
Cl22.93293.40203.40203.40201.7553
H31.02923.40201.69081.69081.7927
H41.02923.40201.69081.69081.7927
H51.02923.40201.69081.69081.7927
H61.17751.75531.79271.79271.7927

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 110.455
H3 N1 H5 110.455 H3 N1 H6 108.469
H4 N1 H5 110.455 H4 N1 H6 108.469
H5 N1 H6 108.469
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability