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All results from a given calculation for CH3OHH2O (methanol water 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-191.663767
Energy at 298.15K-191.668996
Counterpoise corrected energy-191.663767
CP Energy at 298.15K-191.668996
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.818076
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' 3839 3683 12.76      
2 A' 3799 3645 357.95      
3 A' 3129 3002 55.03      
4 A' 3002 2880 71.32      
5 A' 1688 1620 58.85      
6 A' 1525 1463 2.36      
7 A' 1495 1434 21.05      
8 A' 1481 1421 31.09      
9 A' 1132 1087 0.00      
10 A' 1118 1073 95.32      
11 A' 271 260 218.73      
12 A' 192 184 8.73      
13 A' 59 57 38.45      
14 A" 3938 3778 47.91      
15 A" 3051 2927 96.32      
16 A" 1497 1436 0.58      
17 A" 1185 1137 2.43      
18 A" 732 702 113.60      
19 A" 221 212 3.62      
20 A" 95 91 16.34      
21 A" 37 35 53.00      

Unscaled Zero Point Vibrational Energy (zpe) 16742.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 16062.3 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
1.04291 0.13117 0.12116

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.406 0.000
O2 -0.967 0.345 0.000
O3 1.913 0.616 0.000
C4 -1.273 -1.034 0.000
H5 2.109 1.187 0.755
H6 2.109 1.187 -0.755
H7 -2.372 -1.136 0.000
H8 -0.885 -1.563 -0.897
H9 -0.885 -1.563 0.897

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96941.92421.92182.37252.37252.82952.33792.3379
O20.96942.89291.41203.27803.27802.04112.10982.1098
O31.92422.89293.58760.96650.96654.62953.65843.6584
C41.92181.41203.58764.11584.11581.10431.11121.1112
H52.37253.27800.96654.11581.51005.10404.38854.0682
H62.37253.27800.96654.11581.51005.10404.06824.3885
H72.82952.04114.62951.10435.10405.10401.78851.7885
H82.33792.10983.65841.11124.38854.06821.78851.7939
H92.33792.10983.65841.11124.06824.38851.78851.7939

picture of methanol water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 106.114 H1 O3 H5 105.465
H1 O3 H6 105.465 O2 H1 O3 177.349
O2 C4 H7 107.794 O2 C4 H8 112.932
O2 C4 H9 112.932 H5 O3 H6 102.734
H7 C4 H8 107.652 H7 C4 H9 107.652
H8 C4 H9 107.636
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability