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

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-265.517618
Energy at 298.15K-265.521440
HF Energy-264.811648
Counterpoise corrected energy-265.515913
CP Energy at 298.15K-265.519705
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.894822
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 MP2/6-31+G**
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 3984 3748 128.73      
17 A 3800 3575 94.46      
16 A 3783 3558 103.08      
15 A 3218 3027 8.12      
14 A 1782 1677 324.21      
13 A 1633 1536 160.81      
12 A 1433 1348 3.19      
11 A 1319 1240 29.25      
10 A 1153 1085 272.14      
9 A 1078 1014 5.40      
8 A 693 652 174.31      
7 A 630 593 51.19      
6 A 465 438 119.60      
5 A 341 321 198.24      
4 A 170 160 4.97      
3 A 80 75 50.41      
2 A 75 70 34.08      
1 A 45 42 122.33      

Unscaled Zero Point Vibrational Energy (zpe) 12841.7 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 12078.9 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 MP2/6-31+G**
ABC
0.79552 0.09354 0.08372

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.798 0.445 -0.009
O2 -2.379 -0.330 -0.024
O3 0.196 0.944 0.000
H4 -3.272 -0.001 0.126
C5 0.673 -0.181 0.014
O6 1.993 -0.447 -0.003
H7 0.090 -1.101 0.042
H8 2.459 0.408 -0.029

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96892.05511.54602.54933.89442.44044.2567
O20.96892.87310.96243.05674.37412.58754.8940
O32.05512.87313.59631.22182.27252.04812.3256
H41.54600.96243.59633.95075.28513.53755.7470
C52.54933.05671.22183.95071.34641.09031.8803
O63.89444.37412.27255.28511.34642.01330.9737
H72.44042.58752.04813.53751.09032.01332.8097
H84.25674.89402.32565.74701.88030.97372.8097

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 106.351 H1 O3 C5 98.964
O2 H1 O3 140.940 O3 C5 O6 124.396
O3 C5 H7 124.611 C5 O6 H8 107.185
O6 C5 H7 110.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.409      
2 O -0.785      
3 O -0.603      
4 H 0.374      
5 C 0.562      
6 O -0.531      
7 H 0.183      
8 H 0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.819 0.664 0.326 1.104
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.365 -0.640 -1.229
y -0.640 -26.210 -0.069
z -1.229 -0.069 -24.708
Traceless
 xyz
x 9.094 -0.640 -1.229
y -0.640 -5.673 -0.069
z -1.229 -0.069 -3.421
Polar
3z2-r2-6.842
x2-y29.845
xy-0.640
xz-1.229
yz-0.069


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.170 0.009 -0.311
y 0.009 2.860 0.061
z -0.311 0.061 4.237


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