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All results from a given calculation for NH3NH3 (Ammonia Dimer)

using model chemistry: HF_cp_opt/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at HF_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-56.219552
Energy at 298.15K-56.224505
HF Energy-56.219552
Nuclear repulsion energy12.106261
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 HF_cp_opt/6-311+G(3df,2pd)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3814 3470 10.00      
2 A' 3803 3461 45.36      
3 A' 3691 3359 0.99      
4 A' 3682 3350 20.77      
5 A' 1790 1629 13.17      
6 A' 1783 1623 23.46      
7 A' 1129 1027 110.57      
8 A' 1121 1020 257.90      
9 A' 329 300 40.23      
10 A' 102 93 33.82      
11 A' 66 60 67.75      
12 A" 3816 3473 8.32      
13 A" 3814 3471 3.17      
14 A" 1805 1642 17.86      
15 A" 1788 1627 17.88      
16 A" 211 192 60.13      
17 A" 100 91 37.55      
18 A" 45 41 9.51      

Unscaled Zero Point Vibrational Energy (zpe) 16444.3 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 14964.3 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 HF_cp_opt/6-311+G(3df,2pd)
ABC
4.15790 0.15153 0.14991

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF_cp_opt/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.199 0.836 0.000
N2 -0.027 1.810 0.000
N3 -0.027 -1.703 0.000
H4 0.388 2.228 0.807
H5 0.388 2.228 -0.807
H6 -1.016 -1.560 0.000
H7 0.207 -2.242 -0.808
H8 0.207 -2.242 0.808

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.00062.54841.62021.62022.68603.18143.1814
N21.00063.51310.99870.99873.51234.13824.1382
N32.54843.51314.03394.03390.99930.99880.9988
H41.62020.99874.03391.61404.11924.75554.4729
H51.62020.99874.03391.61404.11924.47294.7555
H62.68603.51230.99934.11924.11921.61651.6165
H73.18144.13820.99884.75554.47291.61651.6158
H83.18144.13820.99884.47294.75551.61651.6158

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 108.270 H1 N2 H5 108.270
H1 H3 N6 86.866 H1 H3 H7 121.092
H1 H3 H8 121.092 N2 H1 H3 161.862
H4 N2 H5 107.811 N6 H3 H7 108.004
N6 H3 H8 108.004 H7 H3 H8 107.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.209      
4 H 0.000      
5 H 0.000      
6 H 0.070      
7 H 0.070      
8 H 0.070      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.786 -1.893 0.000 2.050
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.788 0.150 0.000
y 0.150 -3.612 0.000
z 0.000 0.000 -6.166
Traceless
 xyz
x -1.899 0.150 0.000
y 0.150 2.865 0.000
z 0.000 0.000 -0.966
Polar
3z2-r2-1.932
x2-y2-3.176
xy0.150
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.732 0.044 0.000
y 0.044 1.785 0.000
z 0.000 0.000 1.706


<r2> (average value of r2) Å2
<r2> 78.572
(<r2>)1/2 8.864