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: B3LYPultrafine_cp/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYPultrafine_cp/6-31G*
 hartrees
Energy at 0K-231.440616
Energy at 298.15K-231.431908
Nuclear repulsion energy 
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 B3LYPultrafine/6-31G*
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 3809 3649 67.81      
2 A 3653 3500 214.60      
3 A 3164 3031 9.47      
4 A 3143 3011 26.78      
5 A 3057 2928 31.73      
6 A 3050 2922 94.21      
7 A 3010 2883 65.41      
8 A 2998 2872 47.49      
9 A 1735 1662 71.32      
10 A 1547 1482 0.55      
11 A 1528 1464 13.34      
12 A 1524 1460 10.48      
13 A 1514 1451 2.40      
14 A 1511 1447 1.43      
15 A 1482 1420 5.16      
16 A 1284 1230 3.06      
17 A 1213 1162 57.27      
18 A 1208 1157 45.84      
19 A 1176 1126 0.05      
20 A 1129 1082 50.66      
21 A 948 908 48.75      
22 A 656 629 201.88      
23 A 420 402 3.43      
24 A 293 281 77.28      
25 A 255 244 28.74      
26 A 224 214 3.62      
27 A 186 178 94.17      
28 A 169 162 3.51      
29 A 100 96 10.04      
30 A 48 46 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 23015.4 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 22048.8 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 B3LYPultrafine/6-31G*
ABC
0.36873 0.10688 0.08702

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.442 -0.517 0.114
O2 2.394 -0.301 0.138
O3 -0.418 -0.147 -0.211
C4 -0.469 1.251 0.027
C5 -1.639 -0.804 0.068
H6 2.678 -0.446 -0.776
H7 -0.779 1.470 1.060
H8 0.543 1.627 -0.130
H9 -1.168 1.745 -0.664
H10 -1.491 -1.866 -0.141
H11 -1.931 -0.681 1.123
H12 -2.452 -0.422 -0.568

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.97551.92432.60553.09491.52453.12692.33753.54153.23883.52473.9551
O20.97552.83703.25844.06410.96843.74862.68554.18564.19714.45144.8983
O31.92432.83701.41911.41443.16082.08832.01892.08602.02782.08672.0837
C42.60553.25841.41912.36463.66471.10061.09141.10043.28452.65872.6615
C53.09494.06411.41442.36464.41302.62523.27232.69411.09281.10101.1008
H61.52450.96843.16083.66474.41304.35823.04484.42834.44954.99025.1344
H73.12693.74862.08831.10062.62524.35821.78591.78913.61622.44033.0044
H82.33752.68552.01891.09143.27233.04481.78591.79694.04203.60763.6553
H93.54154.18562.08601.10042.69414.42831.78911.79693.66383.10852.5213
H103.23884.19712.02783.28451.09284.44953.61624.04203.66381.78761.7866
H113.52474.45142.08672.65871.10104.99022.44033.60763.10851.78761.7876
H123.95514.89832.08372.66151.10085.13443.00443.65532.52131.78661.7876

picture of water dimethylether dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.414      
2 O -0.819      
3 O -0.463      
4 C -0.209      
5 C -0.196      
6 H 0.376      
7 H 0.139      
8 H 0.179      
9 H 0.137      
10 H 0.164      
11 H 0.141      
12 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.788 0.103 -1.140 3.014
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 135.456
(<r2>)1/2 11.639