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All results from a given calculation for H2OCH3OH (water methanol dimer)

using model chemistry: B1B95/STO-3G

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/STO-3G
 hartrees
Energy at 0K-189.458996
Energy at 298.15K-189.465016
Nuclear repulsion energy79.791274
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/STO-3G
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 3832 3384 94.88      
2 A 3776 3334 14.70      
3 A 3573 3155 440.10      
4 A 3472 3066 0.56      
5 A 3420 3020 6.74      
6 A 3270 2887 11.28      
7 A 2058 1817 5.17      
8 A 1667 1472 3.79      
9 A 1651 1458 5.53      
10 A 1593 1406 2.06      
11 A 1565 1382 15.04      
12 A 1193 1053 1.26      
13 A 1168 1031 3.95      
14 A 1106 976 37.27      
15 A 840 742 45.45      
16 A 581 513 52.11      
17 A 429 379 91.69      
18 A 336 297 20.43      
19 A 138 122 6.20      
20 A 119 105 50.82      
21 A 97 86 3.73      

Unscaled Zero Point Vibrational Energy (zpe) 17940.7 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 15841.7 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/STO-3G
ABC
0.99652 0.14724 0.13467

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.010 0.102 -0.006
O2 -1.980 -0.232 -0.115
O3 0.535 0.661 0.113
H4 -2.344 0.110 0.775
H5 0.690 1.173 -0.755
C6 1.497 -0.436 0.003
H7 2.541 -0.067 -0.045
H8 1.386 -1.052 0.911
H9 1.310 -1.079 -0.881

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H11.03151.64731.54492.14412.56463.55542.81282.7469
O21.03152.67841.02073.08373.48504.52433.61243.4822
O31.64732.67843.00441.02011.46322.13982.07232.1485
H41.54491.02073.00443.55943.95564.95603.90844.1838
H52.14413.08371.02013.55941.95322.33872.86572.3392
C62.56463.48501.46323.95561.95321.10811.10341.1086
H73.55544.52432.13984.95602.33871.10811.79451.7995
H82.81283.61242.07233.90842.86571.10341.79451.7933
H92.74693.48222.14854.18382.33921.10861.79951.7933

picture of water methanol dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 97.663 H1 O3 H5 104.525
H1 O3 C6 110.933 O2 H1 O3 177.863
O3 C6 H7 111.904 O3 C6 H8 106.849
O3 C6 H9 112.585 H5 O3 C6 102.249
H7 C6 H8 108.477 H7 C6 H9 108.547
H8 C6 H9 108.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.161      
2 O -0.371      
3 O -0.235      
4 H 0.123      
5 H 0.201      
6 C -0.141      
7 H 0.081      
8 H 0.096      
9 H 0.084      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.839 0.782 -0.078 2.946
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.804 -1.609 -3.361
y -1.609 -17.339 -1.431
z -3.361 -1.431 -16.582
Traceless
 xyz
x -2.843 -1.609 -3.361
y -1.609 0.854 -1.431
z -3.361 -1.431 1.989
Polar
3z2-r23.979
x2-y2-2.465
xy-1.609
xz-3.361
yz-1.431


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.344 -0.107 -0.322
y -0.107 1.488 -0.135
z -0.322 -0.135 1.674


<r2> (average value of r2) Å2
<r2> 87.089
(<r2>)1/2 9.332