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: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-516.667268
Energy at 298.15K 
HF Energy-516.297461
Nuclear repulsion energy48.457348
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/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 3474 3333 0.49      
2 A1 2596 2490 1329.27      
3 A1 1187 1138 83.22      
4 A1 185 177 17.23      
5 E 3603 3457 4.89      
5 E 3603 3457 4.89      
6 E 1680 1612 13.60      
6 E 1680 1612 13.60      
7 E 741 711 63.83      
7 E 741 711 63.83      
8 E 221 212 21.23      
8 E 221 212 21.23      

Unscaled Zero Point Vibrational Energy (zpe) 9965.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9560.7 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/cc-pVDZ
ABC
6.29772 0.13809 0.13809

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.946
Cl2 0.000 0.000 1.222
H3 0.000 0.941 -2.353
H4 0.815 -0.470 -2.353
H5 -0.815 -0.470 -2.353
H6 0.000 0.000 -0.098

Atom - Atom Distances (Å)
  N1 Cl2 H3 H4 H5 H6
N13.16861.02491.02491.02491.8479
Cl23.16863.69663.69663.69661.3207
H31.02493.69661.62971.62972.4426
H41.02493.69661.62971.62972.4426
H51.02493.69661.62971.62972.4426
H61.84791.32072.44262.44262.4426

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 105.324
H3 N1 H5 105.324 H3 N1 H6 113.354
H4 N1 H5 105.324 H4 N1 H6 113.354
H5 N1 H6 113.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability