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

using model chemistry: B3LYPultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at B3LYPultrafine/3-21G
 hartrees
Energy at 0K-112.473163
Energy at 298.15K-112.479319
Counterpoise corrected energy-112.465514
CP Energy at 298.15K-112.471126
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy41.566189
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/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 A 3506 3383 50.80      
2 A 3503 3380 0.01      
3 A 3358 3240 103.75      
4 A 3340 3223 0.00      
5 A 1749 1688 0.00      
6 A 1716 1656 14.82      
7 A 1017 981 0.00      
8 A 853 823 579.95      
9 A 609 588 0.00      
10 A 232 224 0.00      
11 A 188 181 417.83      
12 A 3532 3408 2.22      
13 A 3531 3407 0.00      
14 A 1785 1722 29.93      
15 A 1770 1708 0.00      
16 A 364 351 92.19      
17 A 245 237 0.00      
18 A 167 162 40.83      

Unscaled Zero Point Vibrational Energy (zpe) 15731.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15179.5 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 B3LYPultrafine/3-21G
ABC
4.58614 0.21822 0.21271

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.639 -0.649 0.000
N2 -0.000 -1.452 0.000
N3 -0.000 1.452 0.000
H4 -0.120 -2.023 0.839
H5 -0.120 -2.023 -0.839
H6 0.638 0.649 0.000
H7 0.120 2.023 -0.839
H8 0.120 2.023 0.839

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02572.19611.69161.69161.82142.90242.9024
N21.02572.90331.02241.02242.19543.57683.5768
N32.19612.90333.57693.57691.02571.02241.0224
H41.69161.02243.57691.67832.90174.38744.0537
H51.69161.02243.57691.67832.90174.05374.3874
H61.82142.19541.02572.90172.90171.69161.6916
H72.90243.57681.02244.38744.05371.69161.6783
H82.90243.57681.02244.05374.38741.69161.6783

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 111.363 H1 N2 H5 111.363
H1 H3 N6 55.415 H1 H3 H7 124.687
H1 H3 H8 124.687 N2 H1 H3 124.539
H4 N2 H5 110.321 N6 H3 H7 111.365
N6 H3 H8 111.365 H7 H3 H8 110.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/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 -0.002 0.000 0.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.007 3.307 0.000
y 3.307 -8.564 0.000
z 0.000 0.000 -11.764
Traceless
 xyz
x -5.844 3.307 0.000
y 3.307 5.321 0.000
z 0.000 0.000 0.522
Polar
3z2-r21.044
x2-y2-7.443
xy3.307
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.082 -0.170 0.000
y -0.170 3.339 0.000
z 0.000 0.000 2.461


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000