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

using model chemistry: HF/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/aug-cc-pVTZ
 hartrees
Energy at 0K-189.982525
Energy at 298.15K-189.985165
Counterpoise corrected energy-189.982421
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.222040
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 HF/aug-cc-pVTZ
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 4204 3828 147.63      
2 A 4074 3709 124.57      
3 A 3187 2902 65.06      
4 A 3107 2829 59.28      
5 A 1978 1800 156.19      
6 A 1760 1603 98.33      
7 A 1650 1502 32.31      
8 A 1374 1251 19.24      
9 A 1346 1225 3.87      
10 A 455 414 116.66      
11 A 327 298 99.24      
12 A 148 135 30.49      
13 A 145 132 0.00      
14 A 64 58 151.35      
15 A 63 57 47.24      

Unscaled Zero Point Vibrational Energy (zpe) 11941.4 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 10871.4 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 HF/aug-cc-pVTZ
ABC
1.42211 0.14965 0.13540

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.170 -0.393 -0.000
O2 1.923 0.178 -0.000
O3 -0.945 -0.652 -0.000
H4 2.683 -0.375 0.001
C5 -1.404 0.438 0.000
H6 -0.772 1.327 0.000
H7 -2.483 0.602 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.94482.13041.51262.70432.59383.7855
O20.94482.98510.94023.33672.92954.4257
O32.13042.98513.63761.18211.98571.9842
H41.51260.94023.63764.16643.85135.2567
C52.70433.33671.18214.16641.09051.0912
H62.59382.92951.98573.85131.09051.8574
H73.78554.42571.98425.25671.09121.8574

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 106.731 H1 O3 C5 105.874
O2 H1 O3 149.806 O3 C5 H6 121.754
O3 C5 H7 121.525 H6 C5 H7 116.722
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.294      
2 O -0.449      
3 O -0.532      
4 H 0.176      
5 C -0.547      
6 H 0.539      
7 H 0.519      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.382 0.683 0.003 1.541
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.336 -6.790 0.007
y -6.790 -18.650 -0.001
z 0.007 -0.001 -19.143
Traceless
 xyz
x 5.561 -6.790 0.007
y -6.790 -2.411 -0.001
z 0.007 -0.001 -3.150
Polar
3z2-r2-6.300
x2-y25.314
xy-6.790
xz0.007
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.086 -0.325 0.000
y -0.325 3.903 0.000
z 0.000 0.000 2.819


<r2> (average value of r2) Å2
<r2> 81.725
(<r2>)1/2 9.040