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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-190.915372
Energy at 298.15K-190.918630
Nuclear repulsion energy69.241387
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 B1B95/6-311G**
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 3926 3770 59.74      
2 A 3789 3638 104.92      
3 A 3016 2896 67.55      
4 A 2925 2809 74.54      
5 A 1827 1754 100.53      
6 A 1658 1592 52.73      
7 A 1528 1467 14.58      
8 A 1277 1226 7.42      
9 A 1218 1170 3.58      
10 A 612 588 224.54      
11 A 301 289 56.50      
12 A 232 223 72.33      
13 A 185 177 111.76      
14 A 183 176 13.22      
15 A 161 154 29.99      

Unscaled Zero Point Vibrational Energy (zpe) 11419.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 10963.4 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 B1B95/6-311G**
ABC
1.23424 0.17048 0.15185

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.085 -0.508 -0.149
O2 1.827 0.105 -0.094
O3 -0.971 -0.676 0.003
H4 2.169 -0.030 0.791
C5 -1.231 0.498 0.010
H6 -0.434 1.260 -0.017
H7 -2.277 0.854 0.042

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96432.06811.51242.52992.33413.6323
O20.96432.90640.95833.08492.53944.1740
O32.06812.90643.30121.20232.00882.0119
H41.51240.95833.30123.52873.01514.5948
C52.52993.08491.20233.52871.10311.1054
H62.33412.53942.00883.01511.10311.8885
H73.63234.17402.01194.59481.10541.8885

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 103.749 H1 O3 C5 97.834
O2 H1 O3 144.326 O3 C5 H6 121.169
O3 C5 H7 121.287 H6 C5 H7 117.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.253      
2 O -0.496      
3 O -0.280      
4 H 0.240      
5 C 0.072      
6 H 0.110      
7 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.421 1.082 1.462 2.308
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.411 -4.050 3.653
y -4.050 -18.553 0.103
z 3.653 0.103 -17.037
Traceless
 xyz
x -0.616 -4.050 3.653
y -4.050 -0.829 0.103
z 3.653 0.103 1.445
Polar
3z2-r22.891
x2-y20.142
xy-4.050
xz3.653
yz0.103


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.620 -0.308 0.144
y -0.308 3.416 -0.001
z 0.144 -0.001 2.064


<r2> (average value of r2) Å2
<r2> 74.360
(<r2>)1/2 8.623