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: PBEPBEultrafine/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBEultrafine/6-311+G(3df,2pd)
 hartrees
Energy at 0K-192.014375
Energy at 298.15K-192.019579
Counterpoise corrected energy-192.013822
CP Energy at 298.15K-192.018963
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.253701
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 PBEPBEultrafine/6-311+G(3df,2pd)
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 3815 3777 72.61      
2 A 3716 3678 9.49      
3 A 3566 3531 477.11      
4 A 3030 3000 37.91      
5 A 2950 2920 65.82      
6 A 2907 2877 83.32      
7 A 1595 1579 69.92      
8 A 1460 1445 2.92      
9 A 1443 1428 2.28      
10 A 1423 1409 3.26      
11 A 1388 1374 38.04      
12 A 1132 1121 0.19      
13 A 1083 1072 3.78      
14 A 1040 1029 104.91      
15 A 695 688 102.26      
16 A 277 275 196.41      
17 A 202 200 0.18      
18 A 166 165 4.97      
19 A 89 88 1.61      
20 A 80 79 34.26      
21 A 69 69 59.85      

Unscaled Zero Point Vibrational Energy (zpe) 16061.5 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 15900.9 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 PBEPBEultrafine/6-311+G(3df,2pd)
ABC
1.12829 0.12525 0.11713

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.188 0.294 0.000
O2 0.710 0.682 -0.000
O3 -2.038 -0.236 0.000
C4 1.655 -0.378 -0.000
H5 -2.458 0.183 -0.767
H6 -2.458 0.183 0.767
H7 2.655 0.075 -0.000
H8 1.571 -1.019 0.896
H9 1.570 -1.020 -0.896

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97801.92461.96142.39922.39932.85132.36992.3699
O20.97802.89701.42053.29753.29772.03802.10672.1067
O31.92462.89703.69600.96990.96994.70363.79973.7995
C41.96141.42053.69604.22194.22211.09791.10491.1049
H52.39923.29750.96994.22191.53445.17184.52134.2061
H62.39933.29770.96994.22211.53445.17214.20654.5212
H72.85132.03804.70361.09795.17185.17211.78241.7824
H82.36992.10673.79971.10494.52134.20651.78241.7912
H92.36992.10673.79951.10494.20614.52121.78241.7912

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 108.310 H1 O3 H5 107.324
H1 O3 H6 107.330 O2 H1 O3 172.543
O2 C4 H7 107.352 O2 C4 H8 112.465
O2 C4 H9 112.465 H5 O3 H6 104.557
H7 C4 H8 108.034 H7 C4 H9 108.034
H8 C4 H9 108.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.308      
2 O -0.602      
3 O -0.329      
4 C 0.249      
5 H 0.159      
6 H 0.159      
7 H 0.019      
8 H 0.019      
9 H 0.019      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.522 -0.329 0.000 2.543
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.598 -4.563 0.001
y -4.563 -23.088 -0.001
z 0.001 -0.001 -18.612
Traceless
 xyz
x 8.251 -4.563 0.001
y -4.563 -7.483 -0.001
z 0.001 -0.001 -0.769
Polar
3z2-r2-1.537
x2-y210.489
xy-4.563
xz0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.417 -0.212 0.000
y -0.212 4.474 0.000
z 0.000 0.000 4.333


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