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

using model chemistry: B3LYP_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 B3LYP_cp_opt/6-31+G**
 hartrees
Energy at 0K-56.566983
Energy at 298.15K-56.572191
HF Energy-56.566983
Nuclear repulsion energy11.900828
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_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' 3621 3492 7.89      
2 A' 3581 3453 59.71      
3 A' 3482 3358 1.67      
4 A' 3439 3316 92.01      
5 A' 1679 1619 14.52      
6 A' 1667 1607 32.00      
7 A' 1052 1014 107.30      
8 A' 1038 1000 358.71      
9 A' 410 395 47.05      
10 A' 142 137 42.24      
11 A' 86 83 104.42      
12 A" 3625 3495 5.64      
13 A" 3620 3491 1.18      
14 A" 1701 1640 27.38      
15 A" 1677 1616 23.47      
16 A" 253 244 67.26      
17 A" 120 116 54.98      
18 A" 48 46 6.02      

Unscaled Zero Point Vibrational Energy (zpe) 15619.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 15060.3 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_cp_opt/6-31+G**
ABC
4.08098 0.17385 0.17154

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.250 0.700 0.000
N2 -0.025 1.683 0.000
N3 -0.025 -1.582 0.000
H4 0.378 2.128 0.820
H5 0.378 2.128 -0.820
H6 -1.020 -1.374 0.000
H7 0.179 -2.144 -0.822
H8 0.179 -2.144 0.822

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.02092.29811.65201.65202.43122.96082.9608
N21.02093.26521.01601.01603.21503.91963.9196
N32.29813.26523.82093.82091.01661.01601.0160
H41.65201.01603.82091.64003.85874.58094.2767
H51.65201.01603.82091.64003.85874.27674.5809
H62.43123.21501.01663.85873.85871.64461.6446
H72.96083.91961.01604.58094.27671.64461.6434
H82.96083.91961.01604.27674.58091.64461.6434

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 108.394 H1 N2 H5 108.394
H1 H3 N6 85.038 H1 H3 H7 121.684
H1 H3 H8 121.684 N2 H1 H3 157.581
H4 N2 H5 107.629 N6 H3 H7 108.012
N6 H3 H8 108.012 H7 H3 H8 107.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 N 0.000      
3 N -0.876      
4 H 0.000      
5 H 0.000      
6 H 0.292      
7 H 0.292      
8 H 0.292      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.787 -2.023 0.000 2.171
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.721 3.569 0.000
y 3.569 -11.337 0.000
z 0.000 0.000 -12.707
Traceless
 xyz
x -4.699 3.569 0.000
y 3.569 3.377 0.000
z 0.000 0.000 1.322
Polar
3z2-r22.645
x2-y2-5.384
xy3.569
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.778 0.081 0.000
y 0.081 1.558 0.000
z 0.000 0.000 1.523


<r2> (average value of r2) Å2
<r2> 70.621
(<r2>)1/2 8.404