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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-113.139741
Energy at 298.15K-113.145116
HF Energy-113.139741
Counterpoise corrected energy-56.566984
CP Energy at 298.15K-56.572207
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy39.772175
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 B3LYPultrafine/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' 3618 3483 7.91      
2 A' 3574 3440 67.22      
3 A' 3482 3352 1.84      
4 A' 3425 3298 128.73      
5 A' 1676 1614 25.85      
6 A' 1667 1605 19.49      
7 A' 1059 1020 177.57      
8 A' 1052 1013 241.07      
9 A' 426 410 72.03      
10 A' 156 150 40.38      
11 A' 131 126 46.66      
12 A" 3619 3484 7.22      
13 A" 3619 3484 0.15      
14 A" 1711 1647 22.26      
15 A" 1674 1612 28.68      
16 A" 297 286 60.43      
17 A" 146 140 33.58      
18 A" 22 21 22.11      

Unscaled Zero Point Vibrational Energy (zpe) 15676.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 15091.4 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 B3LYPultrafine/6-31+G**
ABC
3.85855 0.17698 0.17504

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.102 0.670 0.000
N2 -0.038 1.682 0.000
N3 -0.038 -1.552 0.000
H4 0.421 2.070 0.820
H5 0.421 2.070 -0.820
H6 -1.050 -1.643 0.000
H7 0.316 -2.038 -0.820
H8 0.316 -2.038 0.820

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02202.22691.65311.65312.58452.83782.8378
N21.02203.23481.01611.01613.47643.82643.8264
N32.22693.23483.74193.74191.01681.01651.0165
H41.65311.01613.74191.63994.07704.42454.1093
H51.65311.01613.74191.63994.07704.10934.4245
H62.58453.47641.01684.07704.07701.64141.6414
H72.83783.82641.01654.42454.10931.64141.6402
H82.83783.82641.01654.10934.42451.64141.6402

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 108.408 H1 N2 H5 108.408
H1 H3 N6 98.724 H1 H3 H7 117.080
H1 H3 H8 117.080 N2 H1 H3 168.532
H4 N2 H5 107.602 N6 H3 H7 107.657
N6 H3 H8 107.657 H7 H3 H8 107.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.363      
2 N -0.902      
3 N -0.938      
4 H 0.279      
5 H 0.279      
6 H 0.314      
7 H 0.302      
8 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.185 -2.559 0.000 2.820
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.030 3.702 0.000
y 3.702 -12.418 0.000
z 0.000 0.000 -12.745
Traceless
 xyz
x -3.448 3.702 0.000
y 3.702 1.969 0.000
z 0.000 0.000 1.480
Polar
3z2-r22.959
x2-y2-3.612
xy3.702
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.406 0.044 0.000
y 0.044 4.133 0.000
z 0.000 0.000 3.049


<r2> (average value of r2) Å2
<r2> 69.662
(<r2>)1/2 8.346