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

using model chemistry: PBEPBE/aug-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 PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-266.026632
Energy at 298.15K-266.030042
Counterpoise corrected energy-266.026527
CP Energy at 298.15K-266.029950
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy115.365245
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 PBEPBE/aug-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 3787 3762 90.09      
2 A 3667 3643 46.08      
3 A 3597 3574 48.89      
4 A 2987 2967 13.70      
5 A 1761 1750 325.14      
6 A 1591 1581 89.15      
7 A 1352 1344 6.30      
8 A 1237 1229 2.23      
9 A 1060 1053 247.15      
10 A 1010 1003 4.48      
11 A 656 652 123.34      
12 A 602 598 31.81      
13 A 335 333 83.62      
14 A 243 241 106.00      
15 A 119 118 4.52      
16 A 83 83 97.41      
17 A 51 51 6.70      
18 A 49 48 29.42      

Unscaled Zero Point Vibrational Energy (zpe) 12093.7 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 12015.1 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 PBEPBE/aug-cc-pVTZ
ABC
0.70824 0.08948 0.07957

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.901 0.474 -0.002
O2 2.438 -0.336 -0.059
O3 -0.247 0.914 0.009
H4 3.301 -0.090 0.307
H5 -0.954 1.589 -0.058
C6 -0.865 -0.303 0.032
O7 -2.060 -0.460 -0.017
H8 -0.100 -1.096 0.100

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97302.19281.54073.06602.87354.07032.5454
O20.97302.96230.96963.90033.30474.50032.6540
O32.19282.96233.69960.98001.36482.27552.0177
H41.54070.96963.69964.58934.18125.38443.5530
H53.06603.90030.98004.58931.89582.32922.8224
C62.87353.30471.36484.18121.89581.20651.1048
O74.07034.50032.27555.38442.32921.20652.0645
H82.54542.65402.01773.55302.82241.10482.0645

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 104.957 H1 O3 H5 147.668
H1 O3 C6 105.364 O2 H1 O3 135.055
O3 C6 O7 124.380 O3 C6 H8 109.114
H5 O3 C6 106.747 O7 C6 H8 126.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.223      
2 O -0.359      
3 O -0.184      
4 H 0.145      
5 H 0.136      
6 C 0.044      
7 O -0.459      
8 H 0.453      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.534 2.293 0.651 2.834
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.925 -0.733 2.308
y -0.733 -21.534 -0.284
z 2.308 -0.284 -24.875
Traceless
 xyz
x -2.720 -0.733 2.308
y -0.733 3.866 -0.284
z 2.308 -0.284 -1.146
Polar
3z2-r2-2.293
x2-y2-4.391
xy-0.733
xz2.308
yz-0.284


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.338 0.273 0.083
y 0.273 5.284 -0.051
z 0.083 -0.051 3.896


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