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All results from a given calculation for H2OHCOOH (Water formic acid dimer 2)

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-266.175587
Energy at 298.15K-266.179860
Counterpoise corrected energy-266.171450
CP Energy at 298.15K-266.175296
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy117.641230
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 B3LYP/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
18 A 3813 3661 62.38      
17 A 3671 3525 81.40      
16 A 3663 3518 84.77      
15 A 3135 3011 14.88      
14 A 1818 1746 341.18      
13 A 1733 1664 68.97      
12 A 1412 1356 4.27      
11 A 1340 1286 11.92      
10 A 1166 1120 223.70      
9 A 1086 1043 1.76      
8 A 719 691 157.48      
7 A 640 614 20.65      
6 A 599 575 366.38      
5 A 285 274 92.66      
4 A 223 214 105.81      
3 A 182 174 1.76      
2 A 109 105 14.78      
1 A 103 99 9.20      

Unscaled Zero Point Vibrational Energy (zpe) 12848.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 12338.1 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 B3LYP/6-31G*
ABC
0.76288 0.09566 0.08566

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.749 0.431 -0.140
O2 -2.393 -0.299 -0.092
O3 0.200 0.953 0.002
H4 -2.775 -0.209 0.793
C5 0.651 -0.172 -0.002
O6 1.958 -0.465 0.010
H7 0.041 -1.083 -0.017
H8 2.443 0.384 0.018

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97462.02281.52762.47873.81702.34804.1950
O20.97462.88090.96873.04794.35542.55834.8848
O32.02282.88093.29031.21242.25902.04242.3139
H41.52760.96873.29033.51744.80433.05795.3081
C52.47873.04791.21243.51741.33951.09631.8760
O63.81704.35542.25904.80431.33952.01430.9776
H72.34802.55832.04243.05791.09632.01432.8143
H84.19504.88482.31395.30811.87600.97762.8143

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 103.639 H1 O3 C5 96.820
O2 H1 O3 145.725 O3 C5 O6 124.475
O3 C5 H7 124.345 C5 O6 H8 107.081
O6 C5 H7 111.180
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.411      
2 O -0.809      
3 O -0.436      
4 H 0.382      
5 C 0.372      
6 O -0.513      
7 H 0.180      
8 H 0.413      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.993 0.442 1.441 2.499
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.698 0.897 -4.458
y 0.897 -25.174 -0.467
z -4.458 -0.467 -22.150
Traceless
 xyz
x 1.964 0.897 -4.458
y 0.897 -3.250 -0.467
z -4.458 -0.467 1.286
Polar
3z2-r22.573
x2-y23.476
xy0.897
xz-4.458
yz-0.467


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.550 -0.054 -0.215
y -0.054 3.434 0.018
z -0.215 0.018 2.119


<r2> (average value of r2) Å2
<r2> 122.603
(<r2>)1/2 11.073