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 2)

using model chemistry: B3LYPultrafine/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-266.217723
Energy at 298.15K-266.221557
Counterpoise corrected energy-266.217134
CP Energy at 298.15K-266.220871
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.828208
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/6-31+G**
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 3908 3762 108.51      
2 A 3731 3592 42.27      
3 A 3715 3577 234.30      
4 A 3119 3003 11.50      
5 A 1794 1727 389.37      
6 A 1617 1556 141.77      
7 A 1405 1352 4.59      
8 A 1309 1261 25.45      
9 A 1151 1108 258.68      
10 A 1063 1023 3.08      
11 A 694 668 173.53      
12 A 633 609 54.31      
13 A 495 476 105.44      
14 A 361 347 206.82      
15 A 171 165 6.58      
16 A 78 75 54.35      
17 A 52 50 108.84      
18 A 52 50 30.75      

Unscaled Zero Point Vibrational Energy (zpe) 12673.5 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 12200.7 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/6-31+G**
ABC
0.88938 0.09039 0.08205

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.772 0.404 -0.000
O2 2.425 -0.316 -0.000
O3 -0.171 0.887 -0.000
H4 3.295 0.098 0.001
C5 -0.704 -0.203 0.000
O6 -2.030 -0.396 0.000
H7 -0.166 -1.158 0.000
H8 -2.464 0.476 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97212.00231.55332.54923.88522.48934.2363
O20.97212.86120.96373.13064.45522.72384.9521
O32.00232.86123.55471.21352.25892.04572.3292
H41.55330.96373.55474.01005.34753.68165.7709
C52.54923.13061.21354.01001.34001.09661.8862
O63.88524.45522.25895.34751.34002.01380.9743
H72.48932.72382.04573.68161.09662.01382.8199
H84.23634.95212.32925.77091.88620.97432.8199

picture of Water formic acid dimer 2 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 106.723 H1 O3 C5 102.082
O2 H1 O3 146.138 O3 C5 O6 124.347
O3 C5 H7 124.565 C5 O6 H8 108.139
O6 C5 H7 111.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.381      
2 O -0.756      
3 O -0.473      
4 H 0.361      
5 C 0.349      
6 O -0.396      
7 H 0.171      
8 H 0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.293 1.026 0.001 1.651
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.607 1.002 0.005
y 1.002 -25.850 0.000
z 0.005 0.000 -25.125
Traceless
 xyz
x 7.881 1.002 0.005
y 1.002 -4.484 0.000
z 0.005 0.000 -3.396
Polar
3z2-r2-6.793
x2-y28.243
xy1.002
xz0.005
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.410 0.289 0.000
y 0.289 4.282 -0.000
z 0.000 -0.000 2.928


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