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All results from a given calculation for H2OCH3OH (water methanol 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-191.071860
Energy at 298.15K-191.078363
Counterpoise corrected energy-191.058049
CP Energy at 298.15K-191.063645
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.473399
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 3515 3392 2.34      
2 A 3510 3387 23.49      
3 A 3272 3158 218.96      
4 A 3149 3038 1.65      
5 A 3079 2971 61.26      
6 A 3023 2917 58.90      
7 A 1733 1672 64.26      
8 A 1599 1543 3.81      
9 A 1576 1521 4.30      
10 A 1496 1444 2.66      
11 A 1373 1324 21.48      
12 A 1161 1120 4.09      
13 A 1081 1043 104.36      
14 A 988 953 72.07      
15 A 919 886 252.97      
16 A 400 386 119.65      
17 A 371 358 65.98      
18 A 306 295 96.09      
19 A 276 266 19.75      
20 A 235 227 24.61      
21 A 152 146 72.48      

Unscaled Zero Point Vibrational Energy (zpe) 16606.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 16023.2 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 B3LYP/3-21G
ABC
0.75371 0.18835 0.15812

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.988 0.495 -0.179
O2 -1.784 -0.120 -0.111
O3 0.709 0.763 0.060
H4 -2.051 -0.060 0.847
H5 1.456 1.339 -0.246
C6 1.111 -0.653 0.003
H7 1.764 -0.928 0.839
H8 0.150 -1.166 0.066
H9 1.601 -0.912 -0.944

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H11.00781.73531.57812.58732.39973.26202.02873.0445
O21.00782.65040.99603.55622.94573.76112.20613.5746
O31.73532.65042.98570.99171.47352.14042.00842.1474
H41.57810.99602.98573.93093.32563.91242.58384.1553
H52.58733.55620.99173.93092.03702.53212.84192.3614
C62.39972.94571.47353.32562.03701.09671.09061.0972
H73.26203.76112.14043.91242.53211.09671.80531.7913
H82.02872.20612.00842.58382.84191.09061.80531.7857
H93.04453.57462.14744.15532.36141.09721.79131.7857

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 103.914 H1 O3 H5 141.657
H1 O3 C6 96.470 O2 H1 O3 148.997
O3 C6 H7 111.941 O3 C6 H8 102.091
O3 C6 H9 112.485 H5 O3 C6 109.899
H7 C6 H8 111.253 H7 C6 H9 109.473
H8 C6 H9 109.414
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 0.351      
2 O -0.676      
3 O -0.555      
4 H 0.306      
5 H 0.353      
6 C -0.367      
7 H 0.179      
8 H 0.230      
9 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.042 0.810 0.896 3.273
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.955 0.126 -4.479
y 0.126 -17.789 -1.133
z -4.479 -1.133 -18.548
Traceless
 xyz
x -0.786 0.126 -4.479
y 0.126 0.962 -1.133
z -4.479 -1.133 -0.176
Polar
3z2-r2-0.353
x2-y2-1.165
xy0.126
xz-4.479
yz-1.133


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.593 0.132 -0.405
y 0.132 2.801 -0.115
z -0.405 -0.115 2.580


<r2> (average value of r2) Å2
<r2> 76.367
(<r2>)1/2 8.739