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

using model chemistry: B3LYP_cp_opt/6-31G*

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/6-31G*
 hartrees
Energy at 0K-56.547944
Energy at 298.15K-56.553293
HF Energy-56.547944
Nuclear repulsion energy11.876659
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/6-31G*
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' 3573 3431 0.36      
2 A' 3512 3373 35.48      
3 A' 3442 3306 0.25      
4 A' 3383 3248 110.84      
5 A' 1734 1665 8.46      
6 A' 1720 1651 16.54      
7 A' 1195 1148 148.29      
8 A' 1156 1110 169.37      
9 A' 412 396 73.49      
10 A' 153 147 40.73      
11 A' 116 111 71.52      
12 A" 3573 3431 0.03      
13 A" 3552 3411 4.20      
14 A" 1765 1695 14.99      
15 A" 1726 1657 18.14      
16 A" 301 289 71.80      
17 A" 135 130 52.50      
18 A" 26 25 16.94      

Unscaled Zero Point Vibrational Energy (zpe) 15736.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 15111.4 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_cp_opt/6-31G*
ABC
3.89490 0.17656 0.17475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.101 0.674 0.000
N2 -0.035 1.691 0.000
N3 -0.035 -1.550 0.000
H4 0.477 2.040 0.810
H5 0.477 2.040 -0.810
H6 -1.055 -1.554 0.000
H7 0.248 -2.093 -0.814
H8 0.248 -2.093 0.814

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02552.22811.63191.63192.51072.88872.8887
N21.02553.24021.02011.02013.40123.88103.8810
N32.22813.24023.71573.71571.01951.01931.0193
H41.63191.02013.71571.61983.99044.44734.1402
H51.63191.02013.71571.61983.99044.14024.4473
H62.51073.40121.01953.99043.99041.62831.6283
H72.88873.88101.01934.44734.14021.62831.6283
H82.88873.88101.01934.14024.44731.62831.6283

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 105.828 H1 N2 H5 105.828
H1 H3 N6 93.781 H1 H3 H7 121.027
H1 H3 H8 121.027 N2 H1 H3 168.803
H4 N2 H5 105.101 N6 H3 H7 106.002
N6 H3 H8 106.002 H7 H3 H8 106.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.890      
4 H 0.000      
5 H 0.000      
6 H 0.297      
7 H 0.296      
8 H 0.296      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.059 -2.949 0.000 3.134
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.695 4.149 0.000
y 4.149 -11.069 0.000
z 0.000 0.000 -12.391
Traceless
 xyz
x -2.965 4.149 0.000
y 4.149 2.474 0.000
z 0.000 0.000 0.491
Polar
3z2-r20.983
x2-y2-3.626
xy4.149
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.911 -0.189 0.000
y -0.189 1.354 0.000
z 0.000 0.000 1.417


<r2> (average value of r2) Å2
<r2> 69.078
(<r2>)1/2 8.311