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

using model chemistry: B3LYP_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 B3LYP_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-56.588857
Energy at 298.15K-56.593964
HF Energy-56.588857
Nuclear repulsion energy11.939146
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_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' 3586 3478 7.68      
2 A' 3548 3441 59.15      
3 A' 3469 3365 2.66      
4 A' 3427 3324 93.75      
5 A' 1668 1618 13.43      
6 A' 1658 1609 13.57      
7 A' 1058 1027 92.61      
8 A' 1050 1018 175.74      
9 A' 371 360 45.35      
10 A' 128 124 21.94      
11 A' 91 88 57.64      
12 A" 3587 3480 6.58      
13 A" 3583 3476 1.52      
14 A" 1688 1637 7.98      
15 A" 1665 1615 16.75      
16 A" 247 239 37.46      
17 A" 116 113 34.03      
18 A" 25 24 13.75      

Unscaled Zero Point Vibrational Energy (zpe) 15480.7 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 15016.3 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 B3LYP_cp_opt/aug-cc-pVTZ
ABC
3.96093 0.16925 0.16740

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.156 0.718 0.000
N2 -0.033 1.718 0.000
N3 -0.033 -1.594 0.000
H4 0.421 2.115 0.814
H5 0.421 2.115 -0.814
H6 -1.046 -1.570 0.000
H7 0.255 -2.122 -0.816
H8 0.255 -2.122 0.816

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.01772.31941.63881.63882.58402.95562.9556
N21.01773.31171.01321.01323.43993.93543.9354
N32.31943.31173.82443.82441.01361.01321.0132
H41.63881.01323.82441.62794.04884.54234.2399
H51.63881.01323.82441.62794.04884.23994.5423
H62.58403.43991.01364.04884.04881.63211.6321
H72.95563.93541.01324.54234.23991.63211.6314
H82.95563.93541.01324.23994.54231.63211.6314

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 107.596 H1 N2 H5 107.596
H1 H3 N6 93.297 H1 H3 H7 119.714
H1 H3 H8 119.714 N2 H1 H3 164.622
H4 N2 H5 106.906 N6 H3 H7 107.270
N6 H3 H8 107.270 H7 H3 H8 107.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.440      
4 H 0.000      
5 H 0.000      
6 H 0.147      
7 H 0.147      
8 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.581 -1.372 0.000 1.490
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.783 -0.031 0.000
y -0.031 -4.387 0.000
z 0.000 0.000 -6.398
Traceless
 xyz
x -1.390 -0.031 0.000
y -0.031 2.204 0.000
z 0.000 0.000 -0.814
Polar
3z2-r2-1.628
x2-y2-2.396
xy-0.031
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.110 0.096 0.000
y 0.096 2.297 0.000
z 0.000 0.000 2.069


<r2> (average value of r2) Å2
<r2> 35.473
(<r2>)1/2 5.956