return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-311+G(3df,2pd)
 hartrees
Energy at 0K-231.271107
Energy at 298.15K-231.278894
Counterpoise corrected energy-231.270460
CP Energy at 298.15K-231.278211
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy133.731451
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 PBEPBE/6-311+G(3df,2pd)
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 3796 3758 70.26      
2 A 3518 3483 526.93      
3 A 3063 3033 13.81      
4 A 3063 3032 15.36      
5 A 2974 2944 0.09      
6 A 2967 2937 93.65      
7 A 2921 2892 66.63      
8 A 2913 2884 48.16      
9 A 1617 1601 35.13      
10 A 1460 1446 4.95      
11 A 1443 1428 12.97      
12 A 1436 1422 16.84      
13 A 1431 1416 0.83      
14 A 1428 1414 0.11      
15 A 1406 1392 0.26      
16 A 1225 1213 5.63      
17 A 1152 1140 4.30      
18 A 1143 1131 73.82      
19 A 1121 1110 0.03      
20 A 1081 1070 50.87      
21 A 909 900 49.56      
22 A 654 648 47.33      
23 A 402 398 12.13      
24 A 361 357 78.32      
25 A 238 236 17.81      
26 A 198 196 0.08      
27 A 156 154 2.68      
28 A 110 109 96.36      
29 A 46 45 8.19      
30 A 42 42 9.17      

Unscaled Zero Point Vibrational Energy (zpe) 22135.2 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 21913.9 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 PBEPBE/6-311+G(3df,2pd)
ABC
0.30978 0.11345 0.08882

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.432 -0.015 -0.089
O2 2.379 -0.008 0.167
O3 -0.422 -0.003 -0.381
C4 -1.040 1.186 0.097
C5 -1.071 -1.174 0.099
H6 2.858 -0.023 -0.675
H7 -1.026 1.228 1.200
H8 -0.470 2.032 -0.303
H9 -2.086 1.252 -0.250
H10 -0.525 -2.035 -0.301
H11 -1.056 -1.215 1.203
H12 -2.119 -1.212 -0.246

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.98141.87662.75432.76461.54183.04072.80223.74242.82103.04923.7506
O20.98142.85433.62263.64260.96793.76733.53594.65853.57283.78584.6750
O31.87662.85431.42271.42263.29302.09292.03702.08832.03702.09292.0883
C42.75433.62261.42272.35984.15341.10421.09581.10413.28652.64302.6516
C52.76463.64261.42262.35984.16672.64203.28642.65261.09591.10431.1041
H61.54180.96793.29304.15344.16674.49043.92905.12333.95434.50175.1351
H73.04073.76732.09291.10422.64204.49041.79321.79683.62652.44233.0392
H82.80223.53592.03701.09583.28643.92901.79321.79524.06813.62653.6395
H93.74244.65852.08831.10412.65265.12331.79681.79523.63963.04242.4640
H102.82103.57282.03703.28651.09593.95433.62654.06813.63961.79341.7951
H113.04923.78582.09292.64301.10434.50172.44233.62653.04241.79341.7967
H123.75064.67502.08832.65161.10415.13513.03923.63952.46401.79511.7967

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 104.546 H1 O3 C4 112.468
H1 O3 C5 113.132 O2 H1 O3 173.837
O3 C4 H7 111.219 O3 C4 H8 107.250
O3 C4 H9 110.851 O3 C5 H10 107.258
O3 C5 H11 111.223 O3 C5 H12 110.855
C4 O3 C5 112.074 H7 C4 H8 109.193
H7 C4 H9 108.907 H8 C4 H9 109.383
H10 C5 H11 109.201 H10 C5 H12 109.368
H11 C5 H12 108.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.351      
2 O -0.496      
3 O -0.630      
4 C 0.208      
5 C 0.208      
6 H 0.153      
7 H 0.037      
8 H 0.038      
9 H 0.028      
10 H 0.038      
11 H 0.037      
12 H 0.028      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.534 -0.012 -0.911 2.693
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.683 -0.038 -5.057
y -0.038 -24.979 0.039
z -5.057 0.039 -27.194
Traceless
 xyz
x -2.596 -0.038 -5.057
y -0.038 2.960 0.039
z -5.057 0.039 -0.364
Polar
3z2-r2-0.728
x2-y2-3.704
xy-0.038
xz-5.057
yz0.039


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.019 0.006 -0.114
y 0.006 7.067 -0.001
z -0.114 -0.001 5.822


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000