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All results from a given calculation for H2ONH3 (Water Ammonia Dimer)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-131.710498
Energy at 298.15K-131.715186
HF Energy-131.473518
Counterpoise corrected energy-131.702886
CP Energy at 298.15K-131.707529
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy38.760980
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 MP2/3-21G
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' 3596 3433 32.08      
2 A' 3581 3418 2.35      
3 A' 3434 3278 0.27      
4 A' 3310 3159 386.21      
5 A' 1802 1720 51.26      
6 A' 1791 1709 40.45      
7 A' 1063 1015 249.52      
8 A' 535 511 115.74      
9 A' 240 229 15.11      
10 A' 224 214 41.04      
11 A" 3582 3419 3.04      
12 A" 1787 1706 19.09      
13 A" 854 815 239.86      
14 A" 208 198 30.70      
15 A" 43 41 90.01      

Unscaled Zero Point Vibrational Energy (zpe) 13024.5 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 12431.9 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 MP2/3-21G
ABC
4.60847 0.21700 0.21469

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.034 0.537 0.000
O2 -0.041 1.540 0.000
N3 -0.041 -1.369 0.000
H4 0.911 1.807 0.000
H5 0.869 -1.832 0.000
H6 -0.568 -1.624 0.837
H7 -0.568 -1.624 -0.837

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H11.00291.90571.58292.53532.37792.3779
O21.00292.90860.98873.49273.31463.3146
N31.90572.90863.31541.02091.02101.0210
H41.58290.98873.31543.63963.82853.8285
H52.53533.49271.02093.63961.67521.6752
H62.37793.31461.02103.82851.67521.6732
H72.37793.31461.02103.82851.67521.6732

picture of Water Ammonia Dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.267 H1 N3 H5 116.790
H1 N3 H6 104.584 H1 N3 H7 104.584
O2 H1 N3 179.375 H5 N3 H6 110.256
H5 N3 H7 110.256 H6 N3 H7 110.046
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.404      
2 O -0.793      
3 N -0.872      
4 H 0.324      
5 H 0.308      
6 H 0.314      
7 H 0.314      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.498 -4.452 0.000 4.698
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.850 3.593 0.000
y 3.593 -12.470 0.000
z 0.000 0.000 -12.602
Traceless
 xyz
x 1.686 3.593 0.000
y 3.593 -0.744 0.000
z 0.000 0.000 -0.942
Polar
3z2-r2-1.885
x2-y21.620
xy3.593
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 55.403
(<r2>)1/2 7.443