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: B3LYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at B3LYP/6-311G**
 hartrees
Energy at 0K-113.159854
Energy at 298.15K-113.165398
HF Energy-113.159854
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy40.613074
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 B3LYP/6-311G**
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 3568 3449 0.00      
2 Ag 3449 3334 0.00      
3 Ag 1685 1629 0.00      
4 Ag 1104 1068 0.00      
5 Ag 485 469 0.00      
6 Ag 159 154 0.00      
7 Au 3584 3465 0.02      
8 Au 1704 1648 32.35      
9 Au 255 246 90.84      
10 Au 111 108 27.89      
11 Bg 3583 3464 0.00      
12 Bg 1692 1636 0.00      
13 Bg 148 143 0.00      
14 Bu 3567 3448 23.81      
15 Bu 3452 3338 28.35      
16 Bu 1660 1605 20.12      
17 Bu 1079 1043 364.84      
18 Bu 118 114 274.96      

Unscaled Zero Point Vibrational Energy (zpe) 15700.6 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 15179.4 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 B3LYP/6-311G**
ABC
4.60674 0.19311 0.18943

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.673 0.783 0.000
N2 0.000 1.546 0.000
N3 0.000 -1.546 0.000
H4 0.196 2.119 0.815
H5 0.196 2.119 -0.815
H6 -0.673 -0.783 0.000
H7 -0.196 -2.119 -0.815
H8 -0.196 -2.119 0.815

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.01762.42361.63631.63632.06503.13653.1365
N21.01763.09101.01551.01552.42363.75893.7589
N32.42363.09103.75893.75891.01761.01551.0155
H41.63631.01553.75891.63013.13654.55704.2555
H51.63631.01553.75891.63013.13654.25554.5570
H62.06502.42361.01763.13653.13651.63631.6363
H73.13653.75891.01554.55704.25551.63631.6301
H83.13653.75891.01554.25554.55701.63631.6301

picture of Ammonia Dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 H4 107.186 H1 N2 H5 107.186
H1 H3 N6 57.572 H1 H3 H7 126.569
H1 H3 H8 126.569 N2 H1 H3 122.428
H4 N2 H5 106.765 N6 H3 H7 107.186
N6 H3 H8 107.186 H7 H3 H8 106.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.203      
2 N -0.581      
3 N -0.581      
4 H 0.189      
5 H 0.189      
6 H 0.203      
7 H 0.189      
8 H 0.189      


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
Primitive
 xyz
x -16.718 3.567 0.000
y 3.567 -9.409 0.000
z 0.000 0.000 -12.467
Traceless
 xyz
x -5.780 3.567 0.000
y 3.567 5.184 0.000
z 0.000 0.000 0.596
Polar
3z2-r21.193
x2-y2-7.309
xy3.567
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.519 0.119 0.000
y 0.119 3.816 0.000
z 0.000 0.000 2.984


<r2> (average value of r2) Å2
<r2> 64.375
(<r2>)1/2 8.023