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: B3LYPultrafine_cp/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at B3LYPultrafine_cp/6-31G*
 hartrees
Energy at 0K-113.100553
Energy at 298.15K-113.093226
Nuclear repulsion energy 
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 B3LYPultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3560 3410 0.00      
2 Ag 3430 3286 0.00      
3 Ag 1734 1661 0.00      
4 Ag 1172 1123 0.00      
5 Ag 498 477 0.00      
6 Ag 158 151 0.00      
7 Au 3569 3419 0.42      
8 Au 1750 1676 29.62      
9 Au 265 254 120.92      
10 Au 111 107 31.34      
11 Bg 3569 3419 0.00      
12 Bg 1737 1664 0.00      
13 Bg 145 139 0.00      
14 Bu 3559 3409 20.95      
15 Bu 3432 3288 28.09      
16 Bu 1706 1634 15.39      
17 Bu 1144 1096 346.03      
18 Bu 102 97 325.45      

Unscaled Zero Point Vibrational Energy (zpe) 15819.7 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 15155.2 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 B3LYPultrafine/6-31G*
ABC
4.60320 0.19208 0.18848

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.666 0.776 0.000
N2 0.000 1.550 0.000
N3 0.000 -1.550 0.000
H4 0.223 2.122 0.814
H5 0.223 2.122 -0.814
H6 -0.666 -0.776 0.000
H7 -0.223 -2.122 -0.814
H8 -0.223 -2.122 0.814

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02072.41981.63371.63372.04503.13883.1388
N21.02073.10041.01941.01942.41983.76793.7679
N32.41983.10043.76793.76791.02071.01941.0194
H41.63371.01943.76791.62783.13884.56734.2673
H51.63371.01943.76791.62783.13884.26734.5673
H62.04502.41981.02073.13883.13881.63371.6337
H73.13883.76791.01944.56734.26731.63371.6278
H83.13883.76791.01944.26734.56731.63371.6278

picture of Ammonia Dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.327      
2 N -0.917      
3 N -0.917      
4 H 0.295      
5 H 0.295      
6 H 0.327      
7 H 0.295      
8 H 0.295      


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> 64.468
(<r2>)1/2 8.029