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All results from a given calculation for H2OH2CO (water formaldehyde dimer)

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-190.858820
Energy at 298.15K-190.862070
HF Energy-190.858820
Nuclear repulsion energy 
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 wB97X-D/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 3917 3715 66.90      
2 A 3755 3561 125.58      
3 A 3072 2914 61.79      
4 A 2983 2829 66.43      
5 A 1857 1761 96.65      
6 A 1745 1655 76.07      
7 A 1550 1470 12.69      
8 A 1291 1224 6.81      
9 A 1224 1161 3.47      
10 A 618 586 259.62      
11 A 319 302 78.98      
12 A 225 213 71.84      
13 A 202 192 28.59      
14 A 180 171 86.15      
15 A 146 138 30.49      

Unscaled Zero Point Vibrational Energy (zpe) 11541.3 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 10946.9 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 wB97X-D/6-31G*
ABC
1.23054 0.17417 0.15465

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.097 -0.466 -0.050
O2 1.850 0.138 -0.081
O3 -0.965 -0.678 -0.008
H4 2.465 -0.193 0.580
C5 -1.291 0.483 0.019
H6 -0.543 1.296 0.043
H7 -2.356 0.786 0.027

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96612.07331.53012.57102.40923.6743
O20.96612.93200.96133.16202.66144.2575
O32.07332.93203.51311.20662.01962.0205
H41.53010.96133.51313.85703.39844.9501
C52.57103.16201.20663.85701.10541.1074
H62.40922.66142.01963.39841.10541.8837
H73.67434.25752.02054.95011.10741.8837

picture of water formaldehyde dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.095 H1 O3 C5 99.850
O2 H1 O3 147.131 O3 C5 H6 121.690
O3 C5 H7 121.604 H6 C5 H7 116.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.423      
2 O -0.840      
3 O -0.363      
4 H 0.398      
5 C 0.049      
6 H 0.178      
7 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.535 1.057 1.486 2.384
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.034 -4.317 3.683
y -4.317 -18.309 0.027
z 3.683 0.027 -16.939
Traceless
 xyz
x -0.410 -4.317 3.683
y -4.317 -0.822 0.027
z 3.683 0.027 1.232
Polar
3z2-r22.464
x2-y20.275
xy-4.317
xz3.683
yz0.027


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.460 -0.251 0.170
y -0.251 3.129 -0.040
z 0.170 -0.040 1.780


<r2> (average value of r2) Å2
<r2> 73.173
(<r2>)1/2 8.554