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: HF/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/aug-cc-pVQZ
 hartrees
Energy at 0K-132.298370
Energy at 298.15K-132.302542
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy38.315778
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 HF/aug-cc-pVQZ
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' 4202 3818 111.49      
2 A' 4019 3651 325.01      
3 A' 3809 3460 10.77      
4 A' 3686 3349 0.03      
5 A' 1789 1625 6.57      
6 A' 1777 1615 83.65      
7 A' 1156 1050 188.32      
8 A' 402 365 91.08      
9 A' 170 155 49.57      
10 A' 144 131 6.61      
11 A" 3807 3458 11.99      
12 A" 1787 1623 20.81      
13 A" 622 565 138.53      
14 A" 167 152 39.83      
15 A" 21 19 79.39      

Unscaled Zero Point Vibrational Energy (zpe) 13778.5 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 12517.8 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 HF/aug-cc-pVQZ
ABC
5.10327 0.19090 0.18945

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.051 0.689 0.000
O2 -0.037 1.631 0.000
N3 -0.037 -1.467 0.000
H4 0.835 1.980 0.000
H5 0.800 -2.012 0.000
H6 -0.568 -1.719 0.807
H7 -0.568 -1.719 -0.807

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H10.94682.15731.51092.80222.61372.6137
O20.94683.09830.93883.73783.48703.4870
N32.15733.09833.55570.99830.99860.9986
H41.51090.93883.55573.99204.03784.0378
H52.80223.73780.99833.99201.61491.6149
H62.61373.48700.99864.03781.61491.6146
H72.61373.48700.99864.03781.61491.6146

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 106.508 H1 N3 H5 120.736
H1 N3 H6 105.896 H1 N3 H7 105.896
O2 H1 N3 172.362 H5 N3 H6 107.931
H5 N3 H7 107.931 H6 N3 H7 107.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.244      
2 O -0.579      
3 N -0.564      
4 H 0.287      
5 H 0.212      
6 H 0.200      
7 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.265 -3.120 0.000 3.366
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.752 3.493 0.000
y 3.493 -12.470 0.000
z 0.000 0.000 -13.629
Traceless
 xyz
x 1.297 3.493 0.000
y 3.493 0.221 0.000
z 0.000 0.000 -1.518
Polar
3z2-r2-3.036
x2-y20.718
xy3.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.955 0.100 0.000
y 0.100 3.503 0.000
z 0.000 0.000 2.859


<r2> (average value of r2) Å2
<r2> 61.894
(<r2>)1/2 7.867