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 H2OH2CO (water formaldehyde dimer)

using model chemistry: B3LYPultrafine/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYPultrafine/LANL2DZ
 hartrees
Energy at 0K-190.909775
Energy at 298.15K-190.912892
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.950600
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 B3LYPultrafine/LANL2DZ
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' 3834 3685 60.80      
2 A' 3576 3437 199.98      
3 A' 3109 2988 56.44      
4 A' 3005 2888 64.05      
5 A' 1683 1618 34.85      
6 A' 1592 1530 162.80      
7 A' 1522 1463 40.29      
8 A' 1255 1207 3.06      
9 A' 449 431 184.56      
10 A' 215 207 26.84      
11 A' 113 108 75.17      
12 A" 1213 1166 21.88      
13 A" 571 549 236.38      
14 A" 217 209 1.24      
15 A" 71 69 229.01      

Unscaled Zero Point Vibrational Energy (zpe) 11212.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 10777.4 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 B3LYPultrafine/LANL2DZ
ABC
1.24410 0.17890 0.15641

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.024 -0.490 0.000
O2 -0.947 -1.471 0.000
O3 0.000 1.127 0.000
H4 -1.821 -1.901 0.000
C5 1.169 0.692 0.000
H6 1.374 -0.390 0.000
H7 2.030 1.382 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.98451.91391.62052.49172.40073.5823
O20.98452.76510.97413.02592.56024.1232
O31.91392.76513.53321.24712.04672.0457
H41.62050.97413.53323.95783.53425.0603
C52.49173.02591.24713.95781.10161.1032
H62.40072.56022.04673.53421.10161.8897
H73.58234.12322.04575.06031.10321.8897

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 111.660 H1 O3 C5 101.974
O2 H1 O3 143.095 O3 C5 H6 121.127
O3 C5 H7 120.889 H6 C5 H7 117.984
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.382      
2 O -0.759      
3 O -0.249      
4 H 0.350      
5 C -0.136      
6 H 0.227      
7 H 0.185      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.939 0.417 0.000 1.027
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.841 4.590 0.000
y 4.590 -21.688 0.000
z 0.000 0.000 -19.065
Traceless
 xyz
x 10.536 4.590 0.000
y 4.590 -7.235 0.000
z 0.000 0.000 -3.300
Polar
3z2-r2-6.601
x2-y211.847
xy4.590
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.729 0.343 0.000
y 0.343 2.960 0.000
z 0.000 0.000 1.163


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