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

using model chemistry: CCSD(T)/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 CCSD(T)/3-21G
 hartrees
Energy at 0K-190.370780
Energy at 298.15K-190.377160
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy81.124958
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 CCSD(T)/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 3538 3505        
2 A 3450 3417        
3 A 3386 3354        
4 A 3119 3089        
5 A 3096 3067        
6 A 3019 2990        
7 A 1781 1764        
8 A 1605 1590        
9 A 1563 1549        
10 A 1492 1478        
11 A 1393 1380        
12 A 1164 1153        
13 A 1073 1063        
14 A 942 933        
15 A 813 805        
16 A 572 567        
17 A 310 307        
18 A 252 250        
19 A 239 237        
20 A 204 202        
21 A 156 154        

Unscaled Zero Point Vibrational Energy (zpe) 16582.7 cm-1
Scaled (by 0.9906) Zero Point Vibrational Energy (zpe) 16426.9 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 CCSD(T)/3-21G
ABC
0.71906 0.17810 0.15094

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.010 0.450 0.117
O2 -1.818 -0.086 -0.122
O3 0.799 0.794 0.147
H4 -2.189 -0.405 0.742
H5 0.850 1.212 -0.757
C6 1.140 -0.654 -0.028
H7 2.013 -0.789 -0.684
H8 1.385 -1.021 0.975
H9 0.263 -1.185 -0.417

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.99841.84201.58432.19272.42163.36362.93912.1395
O20.99842.77420.99333.03463.01393.93503.51302.3718
O31.84202.77423.27400.99701.49822.16082.07982.1260
H41.58430.99333.27403.75493.42594.45333.63432.8216
H52.19273.03460.99703.75492.02412.31482.87622.4908
C62.42163.01391.49823.42592.02411.09981.09601.0962
H73.36363.93502.16084.45332.31481.09981.78881.8135
H82.93913.51302.07983.63432.87621.09601.78881.7951
H92.13952.37182.12602.82162.49081.09621.81351.7951

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 105.393 H1 O3 H5 96.584
H1 O3 C6 92.353 O2 H1 O3 154.013
O3 C6 H7 111.641 O3 C6 H8 105.544
O3 C6 H9 109.086 H5 O3 C6 106.701
H7 C6 H8 109.110 H7 C6 H9 111.352
H8 C6 H9 109.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCSD(T)/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.396      
2 O -0.775      
3 O -0.656      
4 H 0.345      
5 H 0.382      
6 C -0.338      
7 H 0.192      
8 H 0.221      
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
  1.945 -0.754 0.219 2.097
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.387 -0.828 -6.083
y -0.828 -18.426 -3.060
z -6.083 -3.060 -17.705
Traceless
 xyz
x -3.322 -0.828 -6.083
y -0.828 1.120 -3.060
z -6.083 -3.060 2.201
Polar
3z2-r24.403
x2-y2-2.961
xy-0.828
xz-6.083
yz-3.060


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> 0.000
(<r2>)1/2 0.000