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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-191.071582
Energy at 298.15K-191.077378
Counterpoise corrected energy-191.060252
CP Energy at 298.15K-191.065664
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy79.313830
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 B3LYP/3-21G
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' 3458 3337 0.40      
2 A' 3224 3111 523.96      
3 A' 3086 2978 102.35      
4 A' 2950 2847 91.16      
5 A' 1682 1623 44.24      
6 A' 1593 1537 1.58      
7 A' 1542 1488 2.19      
8 A' 1513 1460 66.76      
9 A' 1140 1100 22.89      
10 A' 1027 991 59.08      
11 A' 379 366 326.61      
12 A' 268 258 5.76      
13 A' 101 98 55.57      
14 A" 3591 3465 12.58      
15 A" 2969 2864 124.68      
16 A" 1566 1511 0.82      
17 A" 1164 1123 0.23      
18 A" 978 944 146.17      
19 A" 279 269 12.67      
20 A" 132 127 11.98      
21 A" 68 66 74.29      

Unscaled Zero Point Vibrational Energy (zpe) 16355.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15781.1 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 B3LYP/3-21G
ABC
1.11057 0.13839 0.12841

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.384 0.000
O2 -0.924 -0.022 0.000
O3 1.448 1.295 0.000
C4 -0.768 -1.458 0.000
H5 1.338 1.886 0.793
H6 1.338 1.886 -0.793
H7 -1.774 -1.890 0.000
H8 -0.241 -1.850 -0.888
H9 -0.241 -1.850 0.888

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H11.00951.71031.99622.16192.16192.88452.41692.4169
O21.00952.71291.44453.06373.06372.05232.14432.1443
O31.71032.71293.53390.99520.99524.53033.67883.6788
C41.99621.44453.53394.03104.03101.09471.10451.1045
H52.16193.06370.99524.03101.58514.95714.39114.0580
H62.16193.06370.99524.03101.58514.95714.05804.3911
H72.88452.05234.53031.09474.95714.95711.77181.7718
H82.41692.14433.67881.10454.39114.05801.77181.7758
H92.41692.14433.67881.10454.05804.39111.77181.7758

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 107.542 H1 O3 H5 102.869
H1 O3 H6 102.869 O2 H1 O3 171.582
O2 C4 H7 107.041 O2 C4 H8 113.871
O2 C4 H9 113.871 H5 O3 H6 105.564
H7 C4 H8 107.345 H7 C4 H9 107.345
H8 C4 H9 107.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.329      
2 O -0.612      
3 O -0.599      
4 C -0.309      
5 H 0.356      
6 H 0.356      
7 H 0.185      
8 H 0.147      
9 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.203 2.391 0.000 3.251
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.462 4.701 0.000
y 4.701 -10.318 0.000
z 0.000 0.000 -17.690
Traceless
 xyz
x -8.457 4.701 0.000
y 4.701 9.758 0.000
z 0.000 0.000 -1.300
Polar
3z2-r2-2.601
x2-y2-12.143
xy4.701
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.638 0.484 0.000
y 0.484 3.530 0.000
z 0.000 0.000 2.827


<r2> (average value of r2) Å2
<r2> 91.181
(<r2>)1/2 9.549