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

using model chemistry: HF_cp_opt/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 HF_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-56.220806
Energy at 298.15K-56.225666
HF Energy-56.220806
Nuclear repulsion energy12.107340
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/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 A' 3809 3466 9.90      
2 A' 3799 3457 45.29      
3 A' 3687 3355 1.11      
4 A' 3678 3347 20.59      
5 A' 1791 1630 11.83      
6 A' 1783 1623 21.28      
7 A' 1126 1025 102.19      
8 A' 1119 1018 250.07      
9 A' 327 297 38.12      
10 A' 99 91 20.14      
11 A' 53 48 80.45      
12 A" 3812 3469 8.17      
13 A" 3810 3467 3.20      
14 A" 1805 1642 15.65      
15 A" 1788 1627 16.04      
16 A" 206 188 58.00      
17 A" 90 82 36.32      
18 A" 24 22 8.76      

Unscaled Zero Point Vibrational Energy (zpe) 16401.5 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 14925.4 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 HF_cp_opt/aug-cc-pVTZ
ABC
4.16957 0.15223 0.15058

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.206 0.832 0.000
N2 -0.026 1.805 0.000
N3 -0.026 -1.699 0.000
H4 0.385 2.226 0.807
H5 0.385 2.226 -0.807
H6 -1.013 -1.545 0.000
H7 0.202 -2.240 -0.808
H8 0.202 -2.240 0.808

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.00032.54241.62001.62002.67213.17723.1772
N21.00033.50460.99860.99863.49274.13184.1318
N32.54243.50464.02814.02810.99920.99870.9987
H41.62000.99864.02811.61384.10194.75264.4698
H51.62000.99864.02811.61384.10194.46984.7526
H62.67213.49270.99924.10194.10191.61651.6165
H73.17724.13180.99874.75264.46981.61651.6158
H83.17724.13180.99874.46984.75261.61651.6158

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 108.273 H1 N2 H5 108.273
H1 H3 N6 86.367 H1 H3 H7 121.238
H1 H3 H8 121.238 N2 H1 H3 161.295
H4 N2 H5 107.805 N6 H3 H7 108.016
N6 H3 H8 108.016 H7 H3 H8 107.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.587      
4 H 0.000      
5 H 0.000      
6 H 0.196      
7 H 0.196      
8 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.770 -1.346 0.000 1.551
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.815 0.145 0.000
y 0.145 -3.689 0.000
z 0.000 0.000 -6.172
Traceless
 xyz
x -1.885 0.145 0.000
y 0.145 2.805 0.000
z 0.000 0.000 -0.920
Polar
3z2-r2-1.840
x2-y2-3.127
xy0.145
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.867 0.039 0.000
y 0.039 1.911 0.000
z 0.000 0.000 1.844


<r2> (average value of r2) Å2
<r2> 38.529
(<r2>)1/2 6.207