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All results from a given calculation for H2OH2CO (water formaldehyde dimer)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-190.459374
Energy at 298.15K-190.462599
Counterpoise corrected energy-190.459374
CP Energy at 298.15K-190.462599
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.693775
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 QCISD/cc-pVDZ
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 3920 3761 65.69      
2 A 3815 3660 61.98      
3 A 3076 2951 70.35      
4 A 2980 2859 66.08      
5 A 1791 1718 76.44      
6 A 1719 1649 50.14      
7 A 1532 1470 12.80      
8 A 1278 1226 8.26      
9 A 1212 1163 2.60      
10 A 541 519 210.83      
11 A 308 296 51.86      
12 A 232 223 55.20      
13 A 184 177 19.08      
14 A 181 174 109.18      
15 A 166 159 13.59      

Unscaled Zero Point Vibrational Energy (zpe) 11466.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 11001.0 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 QCISD/cc-pVDZ
ABC
1.20163 0.16899 0.15029

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.090 -0.507 -0.155
O2 1.838 0.106 -0.094
O3 -0.973 -0.685 0.002
H4 2.132 -0.027 0.816
C5 -1.236 0.504 0.009
H6 -0.435 1.276 -0.028
H7 -2.291 0.867 0.051

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96892.07741.50312.54192.34963.6554
O20.96892.92250.96533.10212.55794.2014
O32.07742.92253.27731.21742.03322.0363
H41.50310.96533.27733.50443.00014.5769
C52.54193.10211.21743.50441.11291.1162
H62.34962.55792.03323.00011.11291.9016
H73.65544.20142.03634.57691.11621.9016

picture of water formaldehyde dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 102.001 H1 O3 C5 97.537
O2 H1 O3 144.735 O3 C5 H6 121.438
O3 C5 H7 121.462 H6 C5 H7 117.100
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability