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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/3-21G
 hartrees
Energy at 0K-191.071581
Energy at 298.15K-191.077348
Counterpoise corrected energy-191.060251
CP Energy at 298.15K-191.065732
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy79.310576
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 B3LYPultrafine/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' 3457 3336 0.40      
2 A' 3225 3112 524.75      
3 A' 3086 2978 101.67      
4 A' 2950 2847 91.11      
5 A' 1682 1623 44.32      
6 A' 1593 1537 1.55      
7 A' 1543 1489 2.11      
8 A' 1514 1461 67.12      
9 A' 1141 1101 22.91      
10 A' 1027 991 58.97      
11 A' 378 365 326.11      
12 A' 267 258 6.08      
13 A' 101 98 56.72      
14 A" 3589 3463 12.55      
15 A" 2968 2864 124.56      
16 A" 1567 1512 0.82      
17 A" 1164 1123 0.22      
18 A" 977 943 146.04      
19 A" 277 267 12.71      
20 A" 130 126 9.68      
21 A" 57 55 76.73      

Unscaled Zero Point Vibrational Energy (zpe) 16346.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15772.3 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 B3LYPultrafine/3-21G
ABC
1.11285 0.13830 0.12836

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.383 0.000
O2 -0.923 -0.027 0.000
O3 1.442 1.303 0.000
C4 -0.762 -1.462 0.000
H5 1.326 1.894 0.793
H6 1.326 1.894 -0.793
H7 -1.767 -1.897 0.000
H8 -0.234 -1.853 -0.888
H9 -0.234 -1.853 0.888

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H11.00941.71041.99622.16112.16112.88442.41692.4169
O21.00942.71261.44453.06173.06172.05232.14432.1443
O31.71042.71263.53590.99530.99534.53163.68173.6817
C41.99621.44453.53594.03144.03141.09471.10451.1045
H52.16113.06170.99534.03141.58504.95654.39274.0597
H62.16113.06170.99534.03141.58504.95654.05974.3927
H72.88442.05234.53161.09474.95654.95651.77181.7718
H82.41692.14433.68171.10454.39274.05971.77181.7759
H92.41692.14433.68171.10454.05974.39271.77181.7759

picture of methanol water dimer state 1 conformation 1
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