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

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G*
 hartrees
Energy at 0K-39.927059
Energy at 298.15K-39.929935
Nuclear repulsion energy41.425121
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 B1B95/CEP-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 3942 3773 88.89      
2 A 3775 3613 128.80      
3 A 3069 2937 91.42      
4 A 2976 2849 83.05      
5 A 1827 1749 105.57      
6 A 1699 1626 81.25      
7 A 1535 1469 13.48      
8 A 1269 1215 8.62      
9 A 1196 1145 9.10      
10 A 554 530 203.62      
11 A 340 325 117.63      
12 A 200 191 10.58      
13 A 170 163 63.99      
14 A 160 153 17.64      
15 A 15 15 150.15      

Unscaled Zero Point Vibrational Energy (zpe) 11362.8 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 10876.5 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 B1B95/CEP-31G*
ABC
1.24387 0.16444 0.14599

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.082 -0.462 -0.076
O2 1.838 0.153 -0.065
O3 -0.959 -0.688 -0.008
H4 2.509 -0.282 0.479
C5 -1.288 0.489 0.020
H6 -0.530 1.303 0.049
H7 -2.362 0.787 0.017

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97422.05511.54122.55572.39373.6652
O20.97422.92110.96753.14472.63434.2481
O32.05512.92113.52571.22222.03762.0359
H41.54120.96753.52573.90153.45425.0085
C52.55573.14471.22223.90151.11291.1149
H62.39372.63432.03763.45421.11291.9039
H73.66524.24812.03595.00851.11491.9039

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 105.074 H1 O3 C5 99.327
O2 H1 O3 147.059 O3 C5 H6 121.451
O3 C5 H7 121.113 H6 C5 H7 117.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.375      
2 O -0.764      
3 O -0.110      
4 H 0.366      
5 C -0.248      
6 H 0.205      
7 H 0.176      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.164 0.583 1.073 1.686
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.098 -6.114 2.855
y -6.114 -18.300 -0.285
z 2.855 -0.285 -18.204
Traceless
 xyz
x 3.154 -6.114 2.855
y -6.114 -1.649 -0.285
z 2.855 -0.285 -1.505
Polar
3z2-r2-3.010
x2-y23.202
xy-6.114
xz2.855
yz-0.285


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.471 -0.294 0.231
y -0.294 3.133 -0.104
z 0.231 -0.104 1.705


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