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: B3LYP/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 B3LYP/cc-pVQZ
 hartrees
Energy at 0K-133.071607
Energy at 298.15K-133.075929
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy38.815617
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/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' 3873 3752 51.84      
2 A' 3585 3473 10.11      
3 A' 3570 3459 557.31      
4 A' 3470 3361 0.76      
5 A' 1679 1626 10.75      
6 A' 1656 1605 56.59      
7 A' 1085 1051 138.99      
8 A' 454 440 83.31      
9 A' 199 192 23.58      
10 A' 175 170 24.65      
11 A" 3588 3476 9.00      
12 A" 1668 1616 20.05      
13 A" 698 676 103.18      
14 A" 168 163 30.71      
15 A" 13 13 75.71      

Unscaled Zero Point Vibrational Energy (zpe) 12939.6 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 12535.9 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 B3LYP/cc-pVQZ
ABC
4.92390 0.21022 0.20831

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.034 0.589 0.000
O2 0.039 1.560 0.000
N3 0.039 -1.385 0.000
H4 -0.865 1.880 0.000
H5 1.031 -1.589 0.000
H6 -0.359 -1.832 0.816
H7 -0.359 -1.832 -0.816

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H10.97391.97541.53592.42402.57582.5758
O20.97392.94520.95913.30143.51193.5119
N31.97542.94523.38841.01281.01251.0125
H41.53590.95913.38843.95353.83503.8350
H52.42403.30141.01283.95351.63071.6307
H62.57583.51191.01253.83501.63071.6328
H72.57583.51191.01253.83501.63071.6328

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 105.233 H1 N3 H5 103.703
H1 N3 H6 115.271 H1 N3 H7 115.271
O2 H1 N3 173.607 H5 N3 H6 107.250
H5 N3 H7 107.250 H6 N3 H7 107.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.293      
2 O -0.560      
3 N -0.464      
4 H 0.225      
5 H 0.179      
6 H 0.163      
7 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.239 -3.431 0.000 3.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.892 -3.227 0.000
y -3.227 -12.920 0.000
z 0.000 0.000 -13.769
Traceless
 xyz
x 1.453 -3.227 0.000
y -3.227 -0.089 0.000
z 0.000 0.000 -1.363
Polar
3z2-r2-2.727
x2-y21.028
xy-3.227
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.985 -0.134 0.000
y -0.134 3.831 0.000
z 0.000 0.000 2.755


<r2> (average value of r2) Å2
<r2> 57.481
(<r2>)1/2 7.582