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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-192.069233
Energy at 298.15K-192.074579
Nuclear repulsion energy78.810666
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 B1B95/6-31G**
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' 3847 3673 11.44      
2 A' 3731 3562 390.36      
3 A' 3126 2984 50.82      
4 A' 2991 2856 78.87      
5 A' 1658 1583 79.31      
6 A' 1527 1458 1.70      
7 A' 1497 1429 8.58      
8 A' 1443 1378 52.02      
9 A' 1136 1085 11.30      
10 A' 1115 1065 104.49      
11 A' 322 307 279.16      
12 A' 181 173 1.87      
13 A' 73 69 49.04      
14 A" 3961 3782 55.85      
15 A" 3038 2900 92.60      
16 A" 1505 1437 0.84      
17 A" 1183 1129 0.72      
18 A" 722 689 124.99      
19 A" 226 216 11.38      
20 A" 106 101 33.40      
21 A" 57 54 44.08      

Unscaled Zero Point Vibrational Energy (zpe) 16721.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15965.2 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 B1B95/6-31G**
ABC
1.21240 0.12459 0.11731

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.277 0.000
O2 -0.938 0.034 0.000
O3 1.708 1.178 0.000
C4 -1.023 -1.366 0.000
H5 1.595 1.757 0.761
H6 1.595 1.757 -0.761
H7 -2.082 -1.635 0.000
H8 -0.564 -1.826 -0.888
H9 -0.564 -1.826 0.888

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96941.93081.93562.30452.30452.82662.35222.3522
O20.96942.88291.40243.15653.15652.02282.09502.0950
O31.93082.88293.73190.96260.96264.71933.87013.8701
C41.93561.40243.73194.14514.14511.09261.10011.1001
H52.30453.15650.96264.14511.52105.05954.49674.1856
H62.30453.15650.96264.14511.52105.05954.18564.4967
H72.82662.02284.71931.09265.05955.05951.76841.7684
H82.35222.09503.87011.10014.49674.18561.76841.7758
H92.35222.09503.87011.10014.18564.49671.76841.7758

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 107.993 H1 O3 H5 100.166
H1 O3 H6 100.166 O2 H1 O3 166.747
O2 C4 H7 107.687 O2 C4 H8 113.123
O2 C4 H9 113.123 H5 O3 H6 104.376
H7 C4 H8 107.503 H7 C4 H9 107.503
H8 C4 H9 107.624
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.324      
2 O -0.584      
3 O -0.605      
4 C -0.101      
5 H 0.332      
6 H 0.332      
7 H 0.119      
8 H 0.092      
9 H 0.092      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.667 1.595 0.000 2.307
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.003 5.027 0.000
y 5.027 -12.308 0.000
z 0.000 0.000 -17.743
Traceless
 xyz
x -6.978 5.027 0.000
y 5.027 7.565 0.000
z 0.000 0.000 -0.587
Polar
3z2-r2-1.174
x2-y2-9.695
xy5.027
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.249 0.437 0.000
y 0.437 3.551 0.000
z 0.000 0.000 3.133


<r2> (average value of r2) Å2
<r2> 98.180
(<r2>)1/2 9.909