return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/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 B3LYP/6-31+G**
 hartrees
Energy at 0K-266.217721
Energy at 298.15K-266.221576
Counterpoise corrected energy-266.217132
CP Energy at 298.15K-266.220970
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.880228
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/6-31+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 3909 3769 108.45      
17 A 3733 3599 41.62      
16 A 3718 3584 228.52      
15 A 3120 3009 11.31      
14 A 1794 1729 387.21      
13 A 1616 1558 143.77      
12 A 1405 1355 4.62      
11 A 1309 1262 25.46      
10 A 1151 1110 259.27      
9 A 1063 1025 3.08      
8 A 693 668 173.69      
7 A 633 610 54.06      
6 A 494 477 105.27      
5 A 360 348 207.01      
4 A 171 165 6.73      
3 A 81 78 117.54      
2 A 57 55 54.53      
1 A 56 54 22.60      

Unscaled Zero Point Vibrational Energy (zpe) 12681.6 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 12227.6 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/6-31+G**
ABC
0.87980 0.09079 0.08230

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.774 0.410 0.000
O2 2.418 -0.318 -0.000
O3 -0.174 0.893 0.000
H4 3.293 0.087 0.001
C5 -0.700 -0.200 0.000
O6 -2.025 -0.401 -0.000
H7 -0.157 -1.153 0.001
H8 -2.464 0.468 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97202.00651.55342.54823.88452.48334.2381
O20.97202.86090.96373.12104.44442.70704.9454
O32.00652.86093.55931.21352.25902.04562.3293
H41.55340.96373.55934.00385.34073.66565.7698
C52.54823.12101.21354.00381.34001.09661.8863
O63.88454.44442.25905.34071.34002.01400.9743
H72.48332.70702.04563.66561.09662.01402.8200
H84.23814.94542.32935.76981.88630.97432.8200

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 106.732 H1 O3 C5 101.788
O2 H1 O3 145.484 O3 C5 O6 124.348
O3 C5 H7 124.552 C5 O6 H8 108.141
O6 C5 H7 111.101
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.381      
2 O -0.756      
3 O -0.474      
4 H 0.361      
5 C 0.349      
6 O -0.396      
7 H 0.172      
8 H 0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.254 1.012 0.004 1.611
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.455 0.963 0.016
y 0.963 -25.908 -0.000
z 0.016 -0.000 -25.125
Traceless
 xyz
x 8.061 0.963 0.016
y 0.963 -4.618 -0.000
z 0.016 -0.000 -3.443
Polar
3z2-r2-6.886
x2-y28.453
xy0.963
xz0.016
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.404 0.288 0.000
y 0.288 4.286 -0.000
z 0.000 -0.000 2.928


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