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

using model chemistry: B1B95/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/CEP-31G*
 hartrees
Energy at 0K-47.971825
Energy at 298.15K-47.979611
Nuclear repulsion energy81.405043
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 B1B95/CEP-31G*
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 3935 3766 89.27      
2 A 3736 3576 306.97      
3 A 3166 3030 35.41      
4 A 3162 3027 30.43      
5 A 3087 2955 0.41      
6 A 3081 2949 143.42      
7 A 3026 2897 83.12      
8 A 3019 2890 63.95      
9 A 1691 1618 60.80      
10 A 1509 1445 1.44      
11 A 1490 1426 4.30      
12 A 1488 1424 14.51      
13 A 1486 1423 14.61      
14 A 1476 1413 0.02      
15 A 1463 1400 2.49      
16 A 1266 1212 5.33      
17 A 1228 1175 132.54      
18 A 1191 1140 2.96      
19 A 1161 1112 0.03      
20 A 1131 1082 16.51      
21 A 977 936 56.69      
22 A 594 569 123.79      
23 A 416 398 5.88      
24 A 305 292 95.81      
25 A 263 251 26.74      
26 A 219 210 0.19      
27 A 146 140 38.24      
28 A 141 135 100.75      
29 A 36 35 6.12      
30 A 30 29 6.78      

Unscaled Zero Point Vibrational Energy (zpe) 22958.8 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 21976.2 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 B1B95/CEP-31G*
ABC
0.32001 0.10491 0.08315

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.529 -0.029 0.009
O2 -2.496 -0.025 0.148
O3 0.395 -0.003 -0.267
C4 1.135 -1.164 0.061
C5 1.098 1.180 0.068
H6 -2.872 0.094 -0.736
H7 1.367 -1.203 1.144
H8 0.521 -2.037 -0.203
H9 2.087 -1.207 -0.505
H10 0.447 2.034 -0.169
H11 1.349 1.209 1.147
H12 2.037 1.266 -0.515

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.97641.94422.89682.89281.53963.32542.87803.83762.86243.33353.8295
O20.97642.92053.80653.79130.96744.15973.64334.77723.60564.15964.7588
O31.94422.92051.41581.41623.30152.09172.03962.09002.03962.09182.0892
C42.89683.80651.41582.34474.27471.10801.09971.10813.27952.61822.6548
C52.89283.79131.41622.34474.19312.62833.28022.64641.09961.10801.1081
H61.53960.96743.30154.27474.19314.81494.04205.13133.88534.75385.0507
H73.32544.15972.09171.10802.62834.81491.79631.79923.61222.41143.0482
H82.87803.64332.03961.09973.28024.04201.79631.79824.07223.61173.6475
H93.83764.77722.09001.10812.64645.13131.79921.79823.64723.01782.4728
H102.86243.60562.03963.27951.09963.88533.61224.07223.64721.79661.7988
H113.33354.15962.09182.61821.10804.75382.41143.61173.01781.79661.7992
H123.82954.75882.08922.65481.10815.05073.04823.64752.47281.79881.7992

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 104.756 H1 O3 C4 118.269
H1 O3 C5 117.975 O2 H1 O3 178.998
O3 C4 H7 111.368 O3 C4 H8 107.689
O3 C4 H9 111.218 O3 C5 H10 107.673
O3 C5 H11 111.355 O3 C5 H12 111.125
C4 O3 C5 111.779 H7 C4 H8 108.906
H7 C4 H9 108.550 H8 C4 H9 109.060
H10 C5 H11 108.946 H10 C5 H12 109.135
H11 C5 H12 108.561
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.379      
2 O -0.765      
3 O -0.206      
4 C -0.406      
5 C -0.405      
6 H 0.357      
7 H 0.154      
8 H 0.218      
9 H 0.151      
10 H 0.217      
11 H 0.154      
12 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.225 0.232 -1.225 3.457
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.972 -0.752 5.847
y -0.752 -23.608 -0.181
z 5.847 -0.181 -25.593
Traceless
 xyz
x -4.372 -0.752 5.847
y -0.752 3.674 -0.181
z 5.847 -0.181 0.697
Polar
3z2-r21.395
x2-y2-5.364
xy-0.752
xz5.847
yz-0.181


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.978 -0.036 0.110
y -0.036 4.490 -0.065
z 0.110 -0.065 4.193


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