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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-265.885645
Energy at 298.15K-265.889543
Counterpoise corrected energy-265.881521
CP Energy at 298.15K-265.885047
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.515229
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 PBEPBEultrafine/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 3727 3665 45.66      
2 A 3606 3546 18.71      
3 A 3539 3480 30.68      
4 A 3021 2971 10.39      
5 A 1802 1773 260.95      
6 A 1690 1662 64.48      
7 A 1363 1341 14.12      
8 A 1248 1227 4.73      
9 A 1084 1066 235.77      
10 A 1034 1017 4.63      
11 A 690 679 138.18      
12 A 600 590 47.03      
13 A 467 460 252.84      
14 A 243 239 97.84      
15 A 177 174 79.13      
16 A 143 141 0.24      
17 A 107 106 11.51      
18 A 86 85 9.91      

Unscaled Zero Point Vibrational Energy (zpe) 12313.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 12110.1 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 PBEPBEultrafine/6-31G*
ABC
0.62852 0.09728 0.08498

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.839 0.489 -0.198
O2 2.375 -0.325 -0.093
O3 -0.245 0.968 0.010
H4 2.628 -0.296 0.850
H5 -1.009 1.592 0.012
C6 -0.787 -0.289 -0.002
O7 -1.978 -0.521 0.005
H8 0.044 -1.022 -0.020

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97982.14871.52853.06242.74633.95362.3534
O20.97982.92340.97723.89133.16354.35822.4342
O32.14872.92343.24930.98711.36942.28472.0114
H41.52850.97723.24934.18353.52004.68832.8219
H53.06243.89130.98714.18351.89492.32442.8190
C62.74633.16351.36943.52001.89491.21301.1082
O73.95364.35822.28474.68832.32441.21302.0831
H82.35342.43422.01142.82192.81901.10822.0831

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 102.710 H1 O3 H5 153.203
H1 O3 C6 100.273 O2 H1 O3 134.838
O3 C6 O7 124.321 O3 C6 H8 108.091
H5 O3 C6 105.902 O7 C6 H8 127.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.397      
2 O -0.768      
3 O -0.512      
4 H 0.380      
5 H 0.401      
6 C 0.294      
7 O -0.372      
8 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.485 2.284 1.384 2.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.676 -1.753 4.189
y -1.753 -20.885 -0.755
z 4.189 -0.755 -22.029
Traceless
 xyz
x -8.219 -1.753 4.189
y -1.753 4.967 -0.755
z 4.189 -0.755 3.252
Polar
3z2-r26.504
x2-y2-8.791
xy-1.753
xz4.189
yz-0.755


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.565 0.051 0.187
y 0.051 3.774 -0.031
z 0.187 -0.031 2.236


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