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: HF_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 HF_cp/6-31+G**
 hartrees
Energy at 0K-191.089966
Energy at 298.15K-191.081738
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 HF/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' 4148 3751 20.29      
2 A' 4133 3737 334.10      
3 A' 3268 2955 60.09      
4 A' 3156 2854 81.94      
5 A' 1743 1576 120.68      
6 A' 1638 1481 3.31      
7 A' 1615 1461 12.49      
8 A' 1514 1369 52.41      
9 A' 1190 1076 87.70      
10 A' 1188 1074 62.48      
11 A' 229 207 275.61      
12 A' 152 138 24.10      
13 A' 68 61 39.98      
14 A" 4262 3854 121.14      
15 A" 3201 2894 94.95      
16 A" 1627 1471 1.36      
17 A" 1281 1159 3.12      
18 A" 668 604 208.73      
19 A" 202 183 7.45      
20 A" 92 83 17.48      
21 A" 70 64 33.28      

Unscaled Zero Point Vibrational Energy (zpe) 17722.7 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 16024.9 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 HF/6-31+G**
ABC
1.11691 0.12075 0.11297

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

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.433      
2 O -0.646      
3 O -0.779      
4 C -0.082      
5 H 0.382      
6 H 0.382      
7 H 0.118      
8 H 0.096      
9 H 0.096      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.243 -0.216 0.000 3.250
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> 101.434
(<r2>)1/2 10.071