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

using model chemistry: PBEPBE_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 PBEPBE_cp_opt/6-31+G**
 hartrees
Energy at 0K-56.490013
Energy at 298.15K-56.495255
HF Energy-56.490013
Nuclear repulsion energy11.817924
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 PBEPBE_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' 3548 3507 7.07      
2 A' 3493 3453 53.70      
3 A' 3404 3365 2.94      
4 A' 3333 3295 144.59      
5 A' 1636 1618 14.48      
6 A' 1622 1604 29.51      
7 A' 1040 1029 102.84      
8 A' 1022 1011 323.37      
9 A' 421 416 48.56      
10 A' 151 149 37.22      
11 A' 87 86 115.28      
12 A" 3552 3512 5.09      
13 A" 3546 3506 0.73      
14 A" 1658 1639 24.34      
15 A" 1634 1616 24.16      
16 A" 261 258 61.66      
17 A" 126 125 59.36      
18 A" 45 45 4.01      

Unscaled Zero Point Vibrational Energy (zpe) 15289.1 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 15114.8 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 PBEPBE_cp_opt/6-31+G**
ABC
4.03267 0.17959 0.17716

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.261 0.666 0.000
N2 -0.025 1.656 0.000
N3 -0.025 -1.552 0.000
H4 0.390 2.101 0.823
H5 0.390 2.101 -0.823
H6 -1.028 -1.342 0.000
H7 0.169 -2.126 -0.825
H8 0.169 -2.126 0.825

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.03052.23591.65941.65942.38602.91212.9121
N21.03053.20741.02361.02363.16093.87503.8750
N32.23593.20743.76743.76741.02411.02341.0234
H41.65941.02363.76741.64513.81364.54184.2325
H51.65941.02363.76741.64513.81364.23254.5418
H62.38603.16091.02413.81363.81361.65101.6510
H72.91213.87501.02344.54184.23251.65101.6498
H82.91213.87501.02344.23254.54181.65101.6498

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 107.769 H1 N2 H5 107.769
H1 H3 N6 85.553 H1 H3 H7 122.124
H1 H3 H8 122.124 N2 H1 H3 156.488
H4 N2 H5 106.947 N6 H3 H7 107.476
N6 H3 H8 107.476 H7 H3 H8 107.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.896      
4 H 0.000      
5 H 0.000      
6 H 0.299      
7 H 0.299      
8 H 0.299      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.776 -2.080 0.000 2.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.890 3.538 0.000
y 3.538 -11.543 0.000
z 0.000 0.000 -12.842
Traceless
 xyz
x -4.697 3.538 0.000
y 3.538 3.323 0.000
z 0.000 0.000 1.374
Polar
3z2-r22.748
x2-y2-5.347
xy3.538
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.894 0.127 0.000
y 0.127 1.596 0.000
z 0.000 0.000 1.543


<r2> (average value of r2) Å2
<r2> 68.956
(<r2>)1/2 8.304