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

using model chemistry: PBEPBEultrafine_cp_opt/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at PBEPBEultrafine_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-56.511365
Energy at 298.15K-56.516539
HF Energy-56.511365
Nuclear repulsion energy11.844805
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_cp_opt/aug-cc-pVTZ
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' 3507 3472 6.08      
2 A' 3454 3420 49.83      
3 A' 3387 3353 4.62      
4 A' 3316 3283 149.52      
5 A' 1620 1604 13.40      
6 A' 1610 1593 10.76      
7 A' 1050 1039 82.87      
8 A' 1037 1027 139.78      
9 A' 380 376 47.11      
10 A' 135 134 17.85      
11 A' 94 93 57.56      
12 A" 3509 3474 5.15      
13 A" 3502 3467 0.60      
14 A" 1641 1625 5.39      
15 A" 1617 1601 16.39      
16 A" 260 257 33.18      
17 A" 121 120 33.87      
18 A" 34 34 13.24      

Unscaled Zero Point Vibrational Energy (zpe) 15137.1 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 14985.7 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_cp_opt/aug-cc-pVTZ
ABC
3.88700 0.17439 0.17252

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine_cp_opt/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.150 0.683 0.000
N2 -0.036 1.695 0.000
N3 -0.036 -1.563 0.000
H4 0.443 2.081 0.816
H5 0.443 2.081 -0.816
H6 -1.058 -1.574 0.000
H7 0.261 -2.098 -0.819
H8 0.261 -2.098 0.819

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02852.25341.64531.64532.55972.90082.9008
N21.02853.25731.02191.02193.42473.89093.8909
N32.25343.25733.76493.76491.02201.02171.0217
H41.64531.02193.76491.63214.03474.49114.1830
H51.64531.02193.76491.63214.03474.18304.4911
H62.55973.42471.02204.03474.03471.63771.6377
H72.90083.89091.02174.49114.18301.63771.6370
H82.90083.89091.02174.18304.49111.63771.6370

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 106.728 H1 N2 H5 106.728
H1 H3 N6 95.355 H1 H3 H7 119.864
H1 H3 H8 119.864 N2 H1 H3 164.889
H4 N2 H5 105.984 N6 H3 H7 106.508
N6 H3 H8 106.508 H7 H3 H8 106.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.397      
4 H 0.000      
5 H 0.000      
6 H 0.132      
7 H 0.132      
8 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.877 -2.286 0.000 2.449
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.045 3.133 0.000
y 3.133 -12.607 0.000
z 0.000 0.000 -12.999
Traceless
 xyz
x -3.242 3.133 0.000
y 3.133 1.915 0.000
z 0.000 0.000 1.327
Polar
3z2-r22.654
x2-y2-3.438
xy3.133
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.211 0.120 0.000
y 0.120 2.470 0.000
z 0.000 0.000 2.163


<r2> (average value of r2) Å2
<r2> 70.636
(<r2>)1/2 8.405