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All results from a given calculation for H2OCH3OCH3 (water dimethylether dimer)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-229.244032
Energy at 298.15K-229.252685
HF Energy-228.813270
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy133.844509
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 3616 3452 58.15      
2 A 3445 3288 167.71      
3 A 3220 3073 0.58      
4 A 3181 3036 22.13      
5 A 3115 2973 44.84      
6 A 3105 2964 61.26      
7 A 3057 2918 44.97      
8 A 3051 2912 29.31      
9 A 1766 1685 66.80      
10 A 1624 1550 3.78      
11 A 1619 1546 3.00      
12 A 1607 1534 13.02      
13 A 1590 1517 4.48      
14 A 1548 1477 5.36      
15 A 1510 1441 8.66      
16 A 1283 1225 1.77      
17 A 1210 1155 4.97      
18 A 1189 1135 41.83      
19 A 1180 1127 0.08      
20 A 1084 1035 57.61      
21 A 885 845 3.17      
22 A 831 793 358.52      
23 A 419 400 7.98      
24 A 371 354 96.30      
25 A 333 318 64.63      
26 A 249 237 73.43      
27 A 233 223 3.56      
28 A 226 216 7.75      
29 A 159 152 18.59      
30 A 61 59 4.89      

Unscaled Zero Point Vibrational Energy (zpe) 23381.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 22318.0 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
0.39832 0.10837 0.08915

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 1.345 -0.640 0.145
O2 2.305 -0.377 0.127
O3 -0.400 -0.225 -0.126
C4 -0.240 1.237 0.007
C5 -1.795 -0.647 0.041
H6 2.593 -0.515 -0.809
H7 -0.662 1.598 0.954
H8 0.839 1.371 -0.002
H9 -0.721 1.764 -0.826
H10 -1.799 -1.734 -0.053
H11 -2.184 -0.360 1.027
H12 -2.438 -0.209 -0.734

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.99571.81422.46133.14231.57553.11352.07893.31603.33523.64843.9076
O20.99572.72133.01654.11040.98923.65912.28463.82804.32694.57854.8234
O31.81422.72131.47711.46713.08362.13492.02472.13372.05922.12792.1266
C42.46133.01651.47712.44333.42991.09761.08811.09693.35612.71452.7326
C53.14234.11041.46712.44334.47162.67543.31912.77851.09121.09801.0977
H61.57550.98923.08363.42994.47164.26262.69894.02264.62035.11975.0404
H73.11353.65912.13491.09762.67544.26261.79451.78853.66192.48083.0435
H82.07892.28462.02471.08813.31912.69891.79451.80844.07523.63253.7108
H93.31603.82802.13371.09692.77854.02261.78851.80843.74173.17562.6166
H103.33524.32692.05923.35611.09124.62033.66194.07523.74171.78941.7887
H113.64844.57852.12792.71451.09805.11972.48083.63253.17561.78941.7850
H123.90764.82342.12662.73261.09775.04043.04353.71082.61661.78871.7850

picture of water dimethylether dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H6 105.071 H1 O3 C4 96.263
H1 O3 C5 146.326 O2 H1 O3 149.805
O3 C4 H7 111.174 O3 C4 H8 103.193
O3 C4 H9 111.125 O3 C5 H10 106.270
O3 C5 H11 111.296 O3 C5 H12 111.202
C4 O3 C5 112.172 H7 C4 H8 110.373
H7 C4 H9 109.172 H8 C4 H9 111.719
H10 C5 H11 109.654 H10 C5 H12 109.608
H11 C5 H12 108.776
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 0.412      
2 O -0.771      
3 O -0.642      
4 C -0.306      
5 C -0.263      
6 H 0.343      
7 H 0.187      
8 H 0.254      
9 H 0.186      
10 H 0.220      
11 H 0.191      
12 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.368 0.500 -1.363 3.667
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.179 0.561 -5.202
y 0.561 -23.699 0.757
z -5.202 0.757 -25.581
Traceless
 xyz
x -3.539 0.561 -5.202
y 0.561 3.181 0.757
z -5.202 0.757 0.358
Polar
3z2-r20.717
x2-y2-4.480
xy0.561
xz-5.202
yz0.757


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.982 0.181 0.092
y 0.181 3.984 -0.218
z 0.092 -0.218 5.086


<r2> (average value of r2) Å2
<r2> 132.520
(<r2>)1/2 11.512