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All results from a given calculation for H2OHCOOH (Water formic acid dimer 1)

using model chemistry: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-266.124713
Energy at 298.15K-266.128398
HF Energy-265.833644
Nuclear repulsion energy116.725730
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 B2PLYP/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 3919 3760 86.52      
2 A 3808 3653 28.11      
3 A 3749 3597 71.13      
4 A 3118 2991 10.87      
5 A 1815 1742 308.58      
6 A 1656 1589 59.86      
7 A 1414 1357 9.02      
8 A 1291 1238 2.44      
9 A 1109 1064 271.09      
10 A 1079 1035 2.75      
11 A 672 645 138.93      
12 A 629 603 41.09      
13 A 407 390 184.15      
14 A 207 198 93.83      
15 A 151 145 74.46      
16 A 126 121 9.98      
17 A 79 76 21.38      
18 A 61 58 18.13      

Unscaled Zero Point Vibrational Energy (zpe) 12644.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 12131.1 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 B2PLYP/cc-pVTZ
ABC
0.66999 0.09375 0.08278

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.969 0.521 -0.104
O2 2.435 -0.319 -0.086
O3 -0.291 0.946 0.007
H4 3.043 -0.253 0.652
H5 -1.012 1.590 -0.006
C6 -0.836 -0.288 0.009
O7 -2.012 -0.514 0.003
H8 -0.040 -1.037 0.012

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96022.30231.52403.16902.92164.11552.5454
O20.96023.00620.95833.94113.27234.45262.5792
O32.30233.00623.60090.96701.34922.25761.9989
H41.52400.95833.60094.50273.93175.10343.2450
H53.16903.94110.96704.50271.88592.32922.8008
C62.92163.27231.34923.93171.88591.19811.0927
O74.11554.45262.25765.10342.32921.19812.0403
H82.54542.57921.99893.24502.80081.09272.0403

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 105.199 H1 O3 H5 148.754
H1 O3 C6 103.167 O2 H1 O3 129.539
O3 C6 O7 124.708 O3 C6 H8 109.442
H5 O3 C6 107.879 O7 C6 H8 125.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.248      
2 O -0.472      
3 O -0.299      
4 H 0.231      
5 H 0.226      
6 C 0.307      
7 O -0.331      
8 H 0.090      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.006 0.146 0.189
y 0.146 4.167 -0.031
z 0.189 -0.031 2.831


<r2> (average value of r2) Å2
<r2> 126.076
(<r2>)1/2 11.228