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 D2O (Deuterium oxide)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-75.955928
Energy at 298.15K 
Nuclear repulsion energy8.892110
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 mPW1PW91/3-21G*
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/3-21G*
ABC
14.33134 6.81505 4.61870

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.121
H2 0.000 0.784 -0.484
H3 0.000 -0.784 -0.484

Atom - Atom Distances (Å)
  O1 H2 H3
O10.98980.9898
H20.98981.5672
H30.98981.5672

picture of Deuterium oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 104.696
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.672      
2 H 0.336      
3 H 0.336      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.303 2.303
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.850 0.000 0.000
y 0.000 -4.144 0.000
z 0.000 0.000 -5.818
Traceless
 xyz
x -1.869 0.000 0.000
y 0.000 2.190 0.000
z 0.000 0.000 -0.321
Polar
3z2-r2-0.643
x2-y2-2.706
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.119 0.000 0.000
y 0.000 1.067 0.000
z 0.000 0.000 0.634


<r2> (average value of r2) Å2
<r2> 5.313
(<r2>)1/2 2.305