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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-112.473163
Energy at 298.15K-112.479332
HF Energy-112.473163
Counterpoise corrected energy-56.229115
CP Energy at 298.15K-56.234702
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy41.570526
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3502 3379 0.00      
2 Ag 3339 3222 0.00      
3 Ag 1749 1688 0.00      
4 Ag 1016 981 0.00      
5 Ag 609 588 0.00      
6 Ag 233 224 0.00      
7 Au 3531 3407 2.21      
8 Au 1785 1722 30.02      
9 Au 364 351 90.16      
10 Au 170 164 42.53      
11 Bg 3530 3406 0.00      
12 Bg 1770 1708 0.00      
13 Bg 247 238 0.00      
14 Bu 3505 3382 50.95      
15 Bu 3357 3239 104.28      
16 Bu 1716 1656 14.85      
17 Bu 851 821 581.58      
18 Bu 192 185 417.38      

Unscaled Zero Point Vibrational Energy (zpe) 15732.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15180.5 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 B3LYP/3-21G
ABC
4.58536 0.21836 0.21284

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.639 0.649 0.000
N2 0.000 1.451 0.000
N3 0.000 -1.451 0.000
H4 0.119 2.023 0.839
H5 0.119 2.023 -0.839
H6 -0.639 -0.649 0.000
H7 -0.119 -2.023 -0.839
H8 -0.119 -2.023 0.839

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02582.19501.69211.69211.82132.90122.9012
N21.02582.90231.02251.02252.19503.57603.5760
N32.19502.90233.57603.57601.02581.02251.0225
H41.69211.02253.57601.67842.90124.38674.0529
H51.69211.02253.57601.67842.90124.05294.3867
H61.82132.19501.02582.90122.90121.69211.6921
H72.90123.57601.02254.38674.05291.69211.6784
H82.90123.57601.02254.05294.38671.69211.6784

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 111.398 H1 N2 H5 111.398
H1 H3 N6 55.465 H1 H3 H7 124.677
H1 H3 H8 124.677 N2 H1 H3 124.535
H4 N2 H5 110.324 N6 H3 H7 111.398
N6 H3 H8 111.398 H7 H3 H8 110.324
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.288      
2 N -0.799      
3 N -0.799      
4 H 0.255      
5 H 0.255      
6 H 0.288      
7 H 0.255      
8 H 0.255      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.007 3.293 0.000
y 3.293 -8.561 0.000
z 0.000 0.000 -11.763
Traceless
 xyz
x -5.845 3.293 0.000
y 3.293 5.324 0.000
z 0.000 0.000 0.521
Polar
3z2-r21.042
x2-y2-7.446
xy3.293
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.082 -0.171 0.000
y -0.171 3.340 0.000
z 0.000 0.000 2.461


<r2> (average value of r2) Å2
<r2> 57.946
(<r2>)1/2 7.612