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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-265.908671
Energy at 298.15K-265.912656
HF Energy-265.908671
Nuclear repulsion energy117.801428
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 HSEh1PBE/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 3897 3721 67.33      
2 A 3774 3604 26.37      
3 A 3724 3556 60.76      
4 A 3141 2999 10.98      
5 A 1889 1803 316.03      
6 A 1729 1651 75.23      
7 A 1417 1353 11.72      
8 A 1308 1249 7.24      
9 A 1156 1104 267.71      
10 A 1087 1038 1.74      
11 A 701 670 162.74      
12 A 632 604 54.52      
13 A 472 451 260.73      
14 A 236 225 117.45      
15 A 184 176 88.52      
16 A 150 143 0.34      
17 A 109 104 13.44      
18 A 87 83 9.39      

Unscaled Zero Point Vibrational Energy (zpe) 12846.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12266.1 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 HSEh1PBE/6-31+G**
ABC
0.65699 0.09879 0.08657

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.822 0.488 -0.171
O2 2.348 -0.321 -0.094
O3 -0.239 0.945 0.010
H4 2.709 -0.278 0.800
H5 -0.978 1.580 0.003
C6 -0.785 -0.290 0.002
O7 -1.966 -0.502 0.004
H8 0.020 -1.035 -0.006

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96782.11901.52223.01062.72643.91942.3654
O20.96782.88190.96503.83193.13474.31892.4364
O32.11902.88193.28820.97401.35052.25341.9979
H41.52220.96503.28824.20493.58444.74802.9077
H53.01063.83190.97404.20491.87922.30402.7992
C62.72643.13471.35053.58441.87921.19981.0978
O73.91944.31892.25344.74802.30401.19982.0569
H82.36542.43641.99792.90772.79921.09782.0569

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 103.910 H1 O3 H5 151.429
H1 O3 C6 101.279 O2 H1 O3 134.578
O3 C6 O7 124.045 O3 C6 H8 108.939
H5 O3 C6 106.762 O7 C6 H8 127.016
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.422      
2 O -0.817      
3 O -0.569      
4 H 0.402      
5 H 0.427      
6 C 0.348      
7 O -0.412      
8 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.753 2.332 1.422 2.833
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.128 -1.727 4.433
y -1.727 -20.653 -0.724
z 4.433 -0.724 -22.075
Traceless
 xyz
x -7.764 -1.727 4.433
y -1.727 4.949 -0.724
z 4.433 -0.724 2.815
Polar
3z2-r25.630
x2-y2-8.476
xy-1.727
xz4.433
yz-0.724


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.260 0.039 0.213
y 0.039 3.499 -0.024
z 0.213 -0.024 2.122


<r2> (average value of r2) Å2
<r2> 120.873
(<r2>)1/2 10.994