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

using model chemistry: MP2_cp/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 MP2_cp/3-21G
 hartrees
Energy at 0K-190.321147
Energy at 298.15K-190.314346
Nuclear repulsion energy 
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 MP2/3-21G
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 3623 3458 37.72      
2 A 3518 3358 5.63      
3 A 3421 3265 192.83      
4 A 3202 3056 15.80      
5 A 3178 3033 20.88      
6 A 3093 2953 32.26      
7 A 1784 1703 53.51      
8 A 1638 1563 4.45      
9 A 1595 1523 1.77      
10 A 1523 1453 2.27      
11 A 1402 1338 29.90      
12 A 1186 1132 3.42      
13 A 1092 1042 38.06      
14 A 960 916 56.56      
15 A 841 803 252.38      
16 A 585 558 13.86      
17 A 316 302 317.64      
18 A 256 245 21.98      
19 A 242 231 122.43      
20 A 206 196 16.85      
21 A 159 152 12.90      

Unscaled Zero Point Vibrational Energy (zpe) 16908.7 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 16139.4 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 MP2/3-21G
ABC
0.72528 0.17956 0.15217

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.001 0.441 0.117
O2 -1.810 -0.089 -0.122
O3 0.791 0.792 0.146
H4 -2.189 -0.400 0.736
H5 0.835 1.208 -0.755
C6 1.140 -0.650 -0.028
H7 2.006 -0.780 -0.685
H8 1.392 -1.012 0.969
H9 0.269 -1.184 -0.409

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.99631.82571.58222.17262.40763.34262.92632.1293
O20.99632.75870.98813.01353.00463.91843.50622.3680
O31.82572.75873.26300.99361.49382.15322.07202.1181
H41.58220.98813.26303.73593.42464.44473.63982.8229
H52.17263.01350.99363.73592.01832.30762.86562.4827
C62.40763.00461.49383.42462.01831.09421.09011.0908
H73.34263.91842.15324.44472.30761.09421.77951.8039
H82.92633.50622.07203.63982.86561.09011.77951.7860
H92.12932.36802.11812.82292.48271.09081.80391.7860

picture of water methanol dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.398      
2 O -0.779      
3 O -0.658      
4 H 0.346      
5 H 0.383      
6 C -0.338      
7 H 0.193      
8 H 0.222      
9 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.947 -0.742 0.218 2.095
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 78.947
(<r2>)1/2 8.885