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 1)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-266.214792
Energy at 298.15K-266.218336
Counterpoise corrected energy-266.214133
CP Energy at 298.15K-266.217611
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.627795
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 B3LYPultrafine/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
1 A 3923 3776 95.87      
2 A 3791 3649 25.55      
3 A 3737 3598 66.80      
4 A 3120 3004 6.34      
5 A 1821 1753 372.00      
6 A 1605 1545 134.06      
7 A 1407 1355 9.11      
8 A 1273 1225 6.56      
9 A 1115 1074 289.96      
10 A 1058 1018 3.06      
11 A 668 643 167.42      
12 A 622 599 37.53      
13 A 327 315 87.50      
14 A 283 272 165.16      
15 A 133 128 1.43      
16 A 77 74 17.00      
17 A 74 71 176.19      
18 A 57 55 20.53      

Unscaled Zero Point Vibrational Energy (zpe) 12544.8 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 12076.8 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 B3LYPultrafine/6-31+G**
ABC
0.67264 0.09545 0.08359

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.925 0.534 -0.000
O2 2.345 -0.338 -0.000
O3 -0.258 0.944 0.000
H4 3.298 -0.186 0.002
H5 -0.981 1.596 -0.000
C6 -0.815 -0.294 0.000
O7 -2.004 -0.497 -0.000
H8 -0.025 -1.055 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96762.22051.55033.09382.86214.06142.5154
O20.96762.90130.96433.84743.16034.35182.4766
O32.22052.90133.73060.97381.35822.26392.0129
H41.55030.96433.73064.63504.11385.31033.4344
H53.09383.84740.97384.63501.89772.32922.8183
C62.86213.16031.35824.11381.89771.20601.0966
O74.06144.35182.26395.31032.32921.20602.0559
H82.51542.47662.01293.43442.81831.09662.0559

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 106.735 H1 O3 H5 148.637
H1 O3 C6 103.574 O2 H1 O3 126.407
O3 C6 O7 123.880 O3 C6 H8 109.711
H5 O3 C6 107.790 O7 C6 H8 126.409
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.373      
2 O -0.738      
3 O -0.480      
4 H 0.374      
5 H 0.381      
6 C 0.350      
7 O -0.437      
8 H 0.176      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.170 2.576 0.005 3.368
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.477 -1.063 0.017
y -1.063 -21.563 -0.002
z 0.017 -0.002 -25.157
Traceless
 xyz
x -0.117 -1.063 0.017
y -1.063 2.754 -0.002
z 0.017 -0.002 -2.637
Polar
3z2-r2-5.274
x2-y2-1.914
xy-1.063
xz0.017
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.314 0.249 0.001
y 0.249 4.254 -0.000
z 0.001 -0.000 2.895


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