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 H2OHCOOH (Water formic acid dimer 1)

using model chemistry: B3LYP/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/6-311+G(3df,2pd)
 hartrees
Energy at 0K-266.309603
Energy at 298.15K-266.313056
Counterpoise corrected energy-266.309330
CP Energy at 298.15K-266.312736
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.276227
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 B3LYP/6-311+G(3df,2pd)
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 3914 3774 109.05      
2 A 3802 3666 41.10      
3 A 3744 3610 69.80      
4 A 3077 2967 11.97      
5 A 1823 1758 363.02      
6 A 1628 1570 100.07      
7 A 1409 1358 6.44      
8 A 1283 1237 2.94      
9 A 1107 1067 277.73      
10 A 1062 1024 1.90      
11 A 660 636 143.16      
12 A 630 607 35.63      
13 A 342 330 88.46      
14 A 259 250 121.38      
15 A 125 121 4.03      
16 A 68 66 91.08      
17 A 54 52 6.67      
18 A 47 46 53.63      

Unscaled Zero Point Vibrational Energy (zpe) 12516.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 12068.3 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 B3LYP/6-311+G(3df,2pd)
ABC
0.71950 0.09060 0.08054

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.896 0.472 -0.008
O2 2.423 -0.333 -0.043
O3 -0.253 0.907 0.006
H4 3.308 -0.082 0.233
H5 -0.942 1.586 -0.040
C6 -0.861 -0.301 0.022
O7 -2.045 -0.458 -0.011
H8 -0.105 -1.092 0.070

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96322.19231.53523.04952.86344.04912.5412
O20.96322.94940.96013.87433.28434.46932.6418
O32.19232.94943.70180.96931.35272.25272.0053
H41.53520.96013.70184.57374.17915.37083.5627
H53.04953.87430.96934.57371.89042.32282.8082
C62.86343.28431.35274.17911.89041.19481.0945
O74.04914.46932.25275.37082.32281.19482.0419
H82.54122.64182.00533.56272.80821.09452.0419

picture of Water formic acid dimer 1 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.917 H1 O3 H5 146.737
H1 O3 C6 105.278 O2 H1 O3 134.593
O3 C6 O7 124.216 O3 C6 H8 109.602
H5 O3 C6 107.865 O7 C6 H8 126.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.222      
2 O -0.390      
3 O -0.431      
4 H 0.171      
5 H 0.215      
6 C 0.703      
7 O -0.608      
8 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.722 2.388 0.516 2.989
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.559 -0.572 1.823
y -0.572 -21.334 -0.220
z 1.823 -0.220 -24.772
Traceless
 xyz
x -2.506 -0.572 1.823
y -0.572 3.832 -0.220
z 1.823 -0.220 -1.326
Polar
3z2-r2-2.652
x2-y2-4.225
xy-0.572
xz1.823
yz-0.220


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.733 0.232 0.056
y 0.232 4.686 -0.031
z 0.056 -0.031 3.447


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