return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBEultrafine_cp_opt/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBEultrafine_cp_opt/6-31G*
 hartrees
Energy at 0K-132.806157
Energy at 298.15K-132.810656
Nuclear repulsion energy11.793183
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/6-31G*
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' 3699 3646 20.43      
2 A' 3504 3454 1.82      
3 A' 3370 3321 30.25      
4 A' 3349 3301 512.48      
5 A' 1738 1713 39.37      
6 A' 1674 1650 34.71      
7 A' 1153 1137 144.80      
8 A' 489 482 101.02      
9 A' 232 229 30.02      
10 A' 185 182 41.74      
11 A" 3507 3457 1.08      
12 A" 1681 1657 19.18      
13 A" 757 747 151.65      
14 A" 192 189 55.45      
15 A" 31 30 66.74      

Unscaled Zero Point Vibrational Energy (zpe) 12780.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 12597.3 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 PBEPBEultrafine_cp_opt/6-31G*
ABC
4.85168 0.21374 0.21169

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.054 0.560 0.000
O2 0.038 1.550 0.000
N3 0.038 -1.365 0.000
H4 -0.890 1.854 0.000
H5 1.048 -1.546 0.000
H6 -0.334 -1.858 0.820
H7 -0.334 -1.858 -0.820

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H10.99491.92711.54022.37732.56852.5685
O20.99492.91550.97583.25743.52543.5254
N31.92712.91553.34981.02691.02651.0265
H41.54020.97583.34983.91363.84183.8418
H52.37733.25741.02693.91361.63751.6375
H62.56853.52541.02653.84181.63751.6400
H72.56853.52541.02653.84181.63751.6400

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 102.803 H1 N3 H5 102.896
H1 N3 H6 117.542 H1 N3 H7 117.542
O2 H1 N3 171.949 H5 N3 H6 105.779
H5 N3 H7 105.779 H6 N3 H7 106.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 N -0.892      
4 H 0.000      
5 H 0.297      
6 H 0.298      
7 H 0.298      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.189 -4.019 0.000 4.191
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.500 -3.382 0.000
y -3.382 -11.734 0.000
z 0.000 0.000 -13.312
Traceless
 xyz
x 1.024 -3.382 0.000
y -3.382 0.672 0.000
z 0.000 0.000 -1.696
Polar
3z2-r2-3.391
x2-y20.234
xy-3.382
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.426 0.108 0.000
y 0.108 0.891 0.000
z 0.000 0.000 1.450


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