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

using model chemistry: B2PLYP/6-31G*

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/6-31G*
 hartrees
Energy at 0K-265.926588
Energy at 298.15K-265.930520
HF Energy-265.704196
Nuclear repulsion energy116.976735
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/6-31G*
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 3873 3676 64.40      
2 A 3750 3560 19.85      
3 A 3688 3501 59.26      
4 A 3174 3012 10.15      
5 A 1842 1748 282.32      
6 A 1738 1650 75.67      
7 A 1427 1355 11.82      
8 A 1306 1240 4.20      
9 A 1132 1075 272.06      
10 A 1082 1027 2.36      
11 A 695 660 163.64      
12 A 626 594 49.84      
13 A 464 440 258.65      
14 A 231 219 119.05      
15 A 181 172 89.09      
16 A 149 141 0.31      
17 A 109 104 12.83      
18 A 83 79 10.11      

Unscaled Zero Point Vibrational Energy (zpe) 12774.3 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12125.4 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 B2PLYP/6-31G*
ABC
0.65174 0.09672 0.08488

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.845 0.487 -0.173
O2 2.373 -0.323 -0.094
O3 -0.243 0.950 0.010
H4 2.756 -0.266 0.793
H5 -0.986 1.585 -0.001
C6 -0.796 -0.293 0.005
O7 -1.985 -0.503 0.003
H8 0.004 -1.039 0.002

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96942.14741.52583.04162.76013.95972.3976
O20.96942.91130.96743.86373.17094.36222.4766
O32.14742.91133.33000.97681.36032.26782.0039
H41.52580.96743.33004.24943.63894.81182.9657
H53.04163.86370.97684.24941.88722.31442.8039
C62.76013.17091.36033.63891.88721.20661.0939
O73.95974.36222.26784.81182.31441.20662.0593
H82.39762.47662.00392.96572.80391.09392.0593

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 103.957 H1 O3 H5 151.465
H1 O3 C6 101.418 O2 H1 O3 134.626
O3 C6 O7 124.015 O3 C6 H8 108.997
H5 O3 C6 106.544 O7 C6 H8 126.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.433      
2 O -0.836      
3 O -0.623      
4 H 0.407      
5 H 0.438      
6 C 0.432      
7 O -0.455      
8 H 0.203      


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 3.698 -0.083 0.320
y -0.083 2.232 -0.534
z 0.320 -0.534 3.943


<r2> (average value of r2) Å2
<r2> 123.114
(<r2>)1/2 11.096