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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-112.987154
Energy at 298.15K-112.992577
HF Energy-112.987154
Counterpoise corrected energy-56.490015
CP Energy at 298.15K-56.495279
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy39.873611
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 PBEPBEultrafine/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' 3545 3505 7.41      
2 A' 3484 3445 58.05      
3 A' 3403 3364 3.33      
4 A' 3311 3273 199.67      
5 A' 1633 1615 26.56      
6 A' 1623 1604 16.41      
7 A' 1048 1036 163.96      
8 A' 1040 1028 206.40      
9 A' 439 434 74.11      
10 A' 166 164 31.88      
11 A' 139 138 52.28      
12 A" 3546 3506 6.23      
13 A" 3544 3503 0.23      
14 A" 1670 1651 19.06      
15 A" 1631 1613 29.67      
16 A" 312 308 54.83      
17 A" 153 151 34.42      
18 A" 14 14 22.22      

Unscaled Zero Point Vibrational Energy (zpe) 15350.5 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 15175.5 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 PBEPBEultrafine/6-31+G**
ABC
3.80318 0.18280 0.18079

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.101 0.635 0.000
N2 -0.040 1.657 0.000
N3 -0.040 -1.521 0.000
H4 0.436 2.038 0.822
H5 0.436 2.038 -0.822
H6 -1.057 -1.636 0.000
H7 0.319 -2.014 -0.823
H8 0.319 -2.014 0.823

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.03212.15991.66081.66082.54932.78162.7816
N21.03213.17791.02371.02373.44723.77883.7788
N32.15993.17793.68333.68331.02431.02401.0240
H41.66081.02373.68331.64494.05074.37434.0530
H51.66081.02373.68331.64494.05074.05304.3743
H62.54933.44721.02434.05074.05071.64721.6472
H72.78163.77881.02404.37434.05301.64721.6459
H82.78163.77881.02404.05304.37431.64721.6459

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 107.771 H1 N2 H5 107.771
H1 H3 N6 100.211 H1 H3 H7 117.219
H1 H3 H8 117.219 N2 H1 H3 168.454
H4 N2 H5 106.913 N6 H3 H7 107.068
N6 H3 H8 107.068 H7 H3 H8 106.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.368      
2 N -0.918      
3 N -0.963      
4 H 0.285      
5 H 0.285      
6 H 0.323      
7 H 0.310      
8 H 0.310      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.203 -2.670 0.000 2.928
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.149 3.692 0.000
y 3.692 -12.718 0.000
z 0.000 0.000 -12.885
Traceless
 xyz
x -3.348 3.692 0.000
y 3.692 1.800 0.000
z 0.000 0.000 1.548
Polar
3z2-r23.097
x2-y2-3.432
xy3.692
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.606 0.045 0.000
y 0.045 4.535 0.000
z 0.000 0.000 3.140


<r2> (average value of r2) Å2
<r2> 68.040
(<r2>)1/2 8.249