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All results from a given calculation for CH3OHH2O (methanol water dimer)

using model chemistry: CCSD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-191.052092
Energy at 298.15K 
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.080894
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 CCSD(T)/6-31G*
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/6-31G*
ABC
1.11972 0.12387 0.11582

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.327 0.000
O2 -0.968 0.201 0.000
O3 1.879 0.880 0.000
C4 -1.210 -1.199 0.000
H5 1.931 1.475 0.768
H6 1.931 1.475 -0.768
H7 -2.297 -1.338 0.000
H8 -0.798 -1.698 -0.894
H9 -0.798 -1.698 0.894

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97631.95921.94752.37452.37452.83682.35232.3523
O20.97632.92741.42153.25873.25872.03352.10582.1058
O31.95922.92743.72400.97240.97244.72893.82273.8227
C41.94751.42153.72404.19634.19631.09591.10311.1031
H52.37453.25870.97244.19631.53535.13634.50294.1870
H62.37453.25870.97244.19631.53535.13634.18704.5029
H72.83682.03354.72891.09595.13635.13631.78191.7819
H82.35232.10583.82271.10314.50294.18701.78191.7877
H92.35232.10583.82271.10314.18704.50291.78191.7877

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 107.154 H1 O3 H5 102.954
H1 O3 H6 102.954 O2 H1 O3 170.957
O2 C4 H7 107.047 O2 C4 H8 112.434
O2 C4 H9 112.434 H5 O3 H6 104.259
H7 C4 H8 108.254 H7 C4 H9 108.254
H8 C4 H9 108.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCSD(T)/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.484      
2 O -0.786      
3 O -0.869      
4 C -0.159      
5 H 0.450      
6 H 0.450      
7 H 0.161      
8 H 0.134      
9 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.155 1.149 0.000 2.442
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.125 7.359 -0.014
y 7.359 -13.785 -0.030
z -0.014 -0.030 -17.821
Traceless
 xyz
x -4.322 7.359 -0.014
y 7.359 5.188 -0.030
z -0.014 -0.030 -0.866
Polar
3z2-r2-1.731
x2-y2-6.340
xy7.359
xz-0.014
yz-0.030


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


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