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 NH3NH3 (Ammonia Dimer)

using model chemistry: PBEPBE_cp/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at PBEPBE_cp/aug-cc-pVTZ
 hartrees
Energy at 0K-56.511347
Energy at 298.15K 
HF Energy-56.511347
Nuclear repulsion energy11.844692
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 PBEPBE/aug-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 Ag 3487 3464 0.00      
2 Ag 3368 3347 0.00      
3 Ag 1623 1613 0.00      
4 Ag 1048 1041 0.00      
5 Ag 419 416 0.00      
6 Ag 127 126 0.00      
7 Au 3507 3484 5.62      
8 Au 1631 1621 19.30      
9 Au 212 210 65.46      
10 Au 85 85 25.16      
11 Bg 3507 3484 0.00      
12 Bg 1621 1611 0.00      
13 Bg 112 111 0.00      
14 Bu 3487 3464 38.00      
15 Bu 3371 3349 46.38      
16 Bu 1603 1593 16.45      
17 Bu 1024 1017 269.28      
18 Bu 80i 79i 208.02      

Unscaled Zero Point Vibrational Energy (zpe) 15076.2 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 14978.2 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 PBEPBE/aug-cc-pVTZ
ABC
4.52395 0.18269 0.17946

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.694 0.836 0.000
N2 0.000 1.589 0.000
N3 0.000 -1.589 0.000
H4 0.195 2.170 0.817
H5 0.195 2.170 -0.817
H6 -0.694 -0.836 0.000
H7 -0.195 -2.170 -0.817
H8 -0.195 -2.170 0.817

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02402.52301.64201.64202.17333.24023.2402
N21.02403.17891.02171.02172.52303.85263.8526
N32.52303.17893.85263.85261.02401.02171.0217
H41.64201.02173.85261.63503.24024.65484.3582
H51.64201.02173.85261.63503.24024.35824.6548
H62.17332.52301.02403.24023.24021.64201.6420
H73.24023.85261.02174.65484.35821.64201.6350
H83.24023.85261.02174.35824.65481.64201.6350

picture of Ammonia Dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.167      
2 N -0.390      
3 N -0.390      
4 H 0.112      
5 H 0.112      
6 H 0.167      
7 H 0.112      
8 H 0.112      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 67.997
(<r2>)1/2 8.246