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

using model chemistry: HF_cp_opt/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-56.200907
Energy at 298.15K-56.205990
HF Energy-56.200907
Nuclear repulsion energy12.085110
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/6-31+G**
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' 3854 3484 11.57      
2 A' 3841 3473 49.43      
3 A' 3711 3355 0.23      
4 A' 3698 3344 25.09      
5 A' 1805 1632 14.33      
6 A' 1797 1625 40.24      
7 A' 1127 1019 126.73      
8 A' 1116 1009 411.10      
9 A' 374 338 42.13      
10 A' 118 107 49.05      
11 A' 69 63 98.87      
12 A" 3857 3487 8.41      
13 A" 3855 3485 2.99      
14 A" 1823 1649 36.83      
15 A" 1802 1630 21.70      
16 A" 230 208 90.04      
17 A" 105 95 46.60      
18 A" 52 47 6.10      

Unscaled Zero Point Vibrational Energy (zpe) 16616.9 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 15025.0 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/6-31+G**
ABC
4.22618 0.15804 0.15610

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.247 0.800 0.000
N2 -0.022 1.766 0.000
N3 -0.022 -1.671 0.000
H4 0.358 2.210 0.811
H5 0.358 2.210 -0.811
H6 -0.995 -1.436 0.000
H7 0.173 -2.222 -0.812
H8 0.173 -2.222 0.812

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.00232.48651.62981.62982.55803.13013.1301
N21.00233.43721.00001.00003.34594.07394.0739
N32.48653.43723.98313.98311.00081.00021.0002
H41.62981.00003.98311.62263.97214.72284.4350
H51.62981.00003.98311.62263.97214.43504.7228
H62.55803.34591.00083.97213.97211.62541.6254
H73.13014.07391.00024.72284.43501.62541.6242
H83.13014.07391.00024.43504.72281.62541.6242

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 108.971 H1 N2 H5 108.971
H1 H3 N6 82.601 H1 H3 H7 121.704
H1 H3 H8 121.704 N2 H1 H3 158.171
H4 N2 H5 108.439 N6 H3 H7 108.642
N6 H3 H8 108.642 H7 H3 H8 108.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.883      
4 H 0.000      
5 H 0.000      
6 H 0.294      
7 H 0.294      
8 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.773 -1.877 0.000 2.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -7.015 0.301 0.000
y 0.301 -3.220 0.000
z 0.000 0.000 -6.117
Traceless
 xyz
x -2.347 0.301 0.000
y 0.301 3.346 0.000
z 0.000 0.000 -1.000
Polar
3z2-r2-1.999
x2-y2-3.795
xy0.301
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.423 0.019 0.000
y 0.019 1.437 0.000
z 0.000 0.000 1.408


<r2> (average value of r2) Å2
<r2> 75.834
(<r2>)1/2 8.708