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 CH3OHH2O (methanol water dimer)

using model chemistry: B3LYPultrafine_cp/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_cp/6-31+G**
 hartrees
Energy at 0K-192.175900
Energy at 298.15K-192.167947
Nuclear repulsion energy 
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' 3810 3668 10.15      
2 A' 3711 3573 422.02      
3 A' 3113 2997 44.14      
4 A' 2988 2876 86.17      
5 A' 1619 1558 93.32      
6 A' 1513 1456 3.54      
7 A' 1484 1429 9.48      
8 A' 1409 1357 39.93      
9 A' 1112 1071 16.42      
10 A' 1071 1031 111.93      
11 A' 274 264 249.75      
12 A' 174 167 11.31      
13 A' 78 76 34.35      
14 A" 3926 3779 86.16      
15 A" 3033 2920 77.97      
16 A" 1500 1444 1.79      
17 A" 1175 1131 0.28      
18 A" 712 685 169.89      
19 A" 216 208 1.08      
20 A" 95 92 14.91      
21 A" 78 75 48.19      

Unscaled Zero Point Vibrational Energy (zpe) 16544.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 15927.6 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
1.11499 0.12557 0.11727

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.386 0.000
O2 -0.966 0.276 0.000
O3 1.894 0.750 0.000
C4 -1.277 -1.108 0.000
H5 2.196 1.246 0.772
H6 2.196 1.246 -0.772
H7 -2.367 -1.195 0.000
H8 -0.891 -1.622 -0.893
H9 -0.891 -1.622 0.893

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97201.92851.96542.48122.48122.84642.37122.3712
O20.97202.89851.41913.39563.39562.03192.09932.0993
O31.92852.89853.67540.96570.96574.68393.76573.7657
C41.96541.41913.67544.26594.26591.09341.10011.1001
H52.48123.39560.96574.26591.54375.23194.53044.2153
H62.48123.39560.96574.26591.54375.23194.21534.5304
H72.84642.03194.68391.09345.23195.23191.77721.7772
H82.37122.09933.76571.10014.53044.21531.77721.7853
H92.37122.09933.76571.10014.21534.53041.77721.7853

picture of methanol water dimer state 1 conformation 1
More geometry information
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 0.414      
2 O -0.573      
3 O -0.758      
4 C -0.208      
5 H 0.375      
6 H 0.375      
7 H 0.138      
8 H 0.119      
9 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.976 0.666 0.000 3.050
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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