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: PBEPBEultrafine/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 PBEPBEultrafine/6-311+G(3df,2pd)
 hartrees
Energy at 0K-231.271102
Energy at 298.15K-231.278916
Counterpoise corrected energy-231.270462
CP Energy at 298.15K-231.278225
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy133.782058
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 PBEPBEultrafine/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 3794 3756 69.98      
2 A 3515 3479 529.13      
3 A 3063 3032 13.85      
4 A 3062 3032 15.37      
5 A 2974 2944 0.04      
6 A 2967 2937 93.64      
7 A 2921 2892 66.40      
8 A 2913 2884 48.11      
9 A 1617 1601 34.94      
10 A 1460 1446 4.98      
11 A 1443 1428 12.84      
12 A 1437 1423 17.42      
13 A 1432 1418 0.39      
14 A 1429 1415 0.13      
15 A 1407 1393 0.28      
16 A 1226 1213 5.60      
17 A 1152 1141 4.23      
18 A 1143 1131 73.08      
19 A 1122 1111 0.08      
20 A 1080 1070 51.40      
21 A 909 900 49.41      
22 A 653 647 47.19      
23 A 403 399 11.94      
24 A 360 356 78.26      
25 A 244 242 17.90      
26 A 201 199 0.06      
27 A 157 156 3.40      
28 A 109 108 96.43      
29 A 48 48 8.51      
30 A 46 45 9.34      

Unscaled Zero Point Vibrational Energy (zpe) 22143.1 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 21921.6 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 PBEPBEultrafine/6-311+G(3df,2pd)
ABC
0.30940 0.11379 0.08906

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.429 -0.000 -0.093
O2 -2.375 -0.000 0.167
O3 0.424 -0.000 -0.387
C4 1.053 -1.180 0.100
C5 1.053 1.180 0.100
H6 -2.858 -0.000 -0.672
H7 1.026 -1.222 1.203
H8 0.500 -2.034 -0.307
H9 2.104 -1.231 -0.234
H10 0.500 2.034 -0.307
H11 1.025 1.222 1.203
H12 2.104 1.231 -0.234

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.98151.87562.75442.75431.54203.03212.81153.74362.81133.03203.7435
O20.98152.85323.62593.62570.96793.75883.55404.66243.55363.75864.6623
O31.87562.85321.42271.42273.29412.09302.03722.08832.03722.09302.0883
C42.75443.62591.42272.35964.15701.10421.09581.10413.28642.64282.6510
C52.75433.62571.42272.35964.15692.64293.28642.65101.09581.10421.1041
H61.54200.96793.29414.15704.15694.48173.94305.13093.94294.48165.1308
H73.03213.75882.09301.10422.64294.48171.79331.79683.62712.44333.0403
H82.81153.55402.03721.09583.28643.94301.79331.79524.06843.62713.6384
H93.74364.66242.08831.10412.65105.13091.79681.79523.63843.04032.4618
H102.81133.55362.03723.28641.09583.94293.62714.06843.63841.79331.7952
H113.03203.75862.09302.64281.10424.48162.44333.62713.04031.79331.7968
H123.74354.66232.08832.65101.10415.13083.04033.63842.46181.79521.7968

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 104.557 H1 O3 C4 112.528
H1 O3 C5 112.521 O2 H1 O3 173.644
O3 C4 H7 111.218 O3 C4 H8 107.258
O3 C4 H9 110.847 O3 C5 H10 107.258
O3 C5 H11 111.218 O3 C5 H12 110.847
C4 O3 C5 112.050 H7 C4 H8 109.198
H7 C4 H9 108.905 H8 C4 H9 109.377
H10 C5 H11 109.197 H10 C5 H12 109.377
H11 C5 H12 108.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.351      
2 O -0.495      
3 O -0.629      
4 C 0.207      
5 C 0.207      
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
  2.518 -0.000 -0.903 2.675
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.635 -0.001 5.060
y -0.001 -24.979 0.001
z 5.060 0.001 -27.213
Traceless
 xyz
x -2.539 -0.001 5.060
y -0.001 2.945 0.001
z 5.060 0.001 -0.406
Polar
3z2-r2-0.812
x2-y2-3.656
xy-0.001
xz5.060
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.016 0.000 0.116
y 0.000 7.066 0.000
z 0.116 0.000 5.821


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