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_opt/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 B3LYPultrafine_cp_opt/3-21G
 hartrees
Energy at 0K-230.158823
Energy at 298.15K-230.166692
Nuclear repulsion energy82.099871
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_cp_opt/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 3508 3385 36.34      
2 A 3305 3189 243.36      
3 A 3136 3026 22.41      
4 A 3133 3024 19.17      
5 A 3047 2941 0.03      
6 A 3046 2940 119.32      
7 A 3008 2902 48.94      
8 A 2998 2893 38.08      
9 A 1728 1667 53.76      
10 A 1587 1531 0.67      
11 A 1569 1514 16.09      
12 A 1554 1500 16.69      
13 A 1546 1492 0.00      
14 A 1527 1474 0.01      
15 A 1487 1435 6.03      
16 A 1255 1211 0.02      
17 A 1183 1142 2.06      
18 A 1156 1116 43.06      
19 A 1150 1109 0.59      
20 A 1083 1045 64.74      
21 A 887 856 32.38      
22 A 682 659 131.76      
23 A 409 395 9.48      
24 A 366 353 102.74      
25 A 240 232 9.90      
26 A 239 231 0.01      
27 A 164 158 1.95      
28 A 108 104 102.03      
29 A 47 46 5.94      
30 A 19 18 12.99      

Unscaled Zero Point Vibrational Energy (zpe) 22583.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 21792.9 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 B3LYPultrafine_cp_opt/3-21G
ABC
0.30970 0.10537 0.08220

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine_cp_opt/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.493 -0.001 0.065
O2 -2.496 -0.001 0.138
O3 0.345 -0.000 -0.176
C4 1.134 -1.205 0.041
C5 1.131 1.206 0.041
H6 -2.804 -0.002 -0.809
H7 1.534 -1.250 1.064
H8 0.457 -2.048 -0.118
H9 1.972 -1.272 -0.668
H10 0.452 2.047 -0.118
H11 1.531 1.252 1.064
H12 1.969 1.275 -0.668

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H11.00571.85362.88982.88851.57573.42352.83283.76262.83063.42253.7616
O21.00572.85823.82573.82390.99594.31973.60224.71463.59884.31804.7130
O31.85362.85821.45651.45653.21172.12452.05112.12262.05112.12452.1226
C42.88983.82571.45652.41164.20411.09961.09211.09953.32682.69122.7111
C52.88853.82391.45652.41164.20322.69123.32682.71111.09211.09961.0995
H61.57570.99593.21174.20414.20324.88703.91084.94373.90914.88624.9428
H73.42354.31972.12451.09962.69124.88701.78691.78633.66562.50183.0923
H82.83283.60222.05111.09213.32683.91081.78691.78864.09473.66563.6914
H93.76264.71462.12261.09952.71114.94371.78631.78863.69143.09212.5465
H102.83063.59882.05113.32681.09213.90913.66564.09473.69141.78691.7886
H113.42254.31802.12452.69121.09964.88622.50183.66563.09211.78691.7863
H123.76164.71302.12262.71111.09954.94283.09233.69142.54651.78861.7863

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 103.852 H1 O3 C4 121.156
H1 O3 C5 121.067 O2 H1 O3 176.673
O3 C4 H7 111.680 O3 C4 H8 106.306
O3 C4 H9 111.525 O3 C5 H10 106.305
O3 C5 H11 111.680 O3 C5 H12 111.525
C4 O3 C5 111.769 H7 C4 H8 109.237
H7 C4 H9 108.641 H8 C4 H9 109.398
H10 C5 H11 109.237 H10 C5 H12 109.400
H11 C5 H12 108.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine_cp_opt/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.479      
4 C -0.314      
5 C -0.308      
6 H 0.000      
7 H 0.172      
8 H 0.209      
9 H 0.175      
10 H 0.205      
11 H 0.170      
12 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.878 -0.001 -1.334 4.100
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.176 -0.004 0.129
y -0.004 -16.469 0.000
z 0.129 0.000 -20.173
Traceless
 xyz
x 0.145 -0.004 0.129
y -0.004 2.706 0.000
z 0.129 0.000 -2.851
Polar
3z2-r2-5.703
x2-y2-1.707
xy-0.004
xz0.129
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.806 0.556 -0.008
y 0.556 4.005 -0.015
z -0.008 -0.015 3.296


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