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 C4H8O2 (Ethene, 1,1-dimethoxy-)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-307.588388
Energy at 298.15K-307.598020
Nuclear repulsion energy250.343707
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 B1B95/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3220 3092 0.93      
2 A1 3165 3039 22.60      
3 A1 3024 2904 8.69      
4 A1 1711 1643 270.84      
5 A1 1518 1458 1.78      
6 A1 1485 1426 19.34      
7 A1 1414 1357 7.45      
8 A1 1244 1194 3.58      
9 A1 1196 1148 0.56      
10 A1 907 871 42.92      
11 A1 509 489 0.50      
12 A1 286 274 4.48      
13 A2 3089 2966 0.00      
14 A2 1497 1437 0.00      
15 A2 1179 1132 0.00      
16 A2 676 649 0.00      
17 A2 306 294 0.00      
18 A2 142 137 0.00      
19 B1 3090 2967 77.00      
20 B1 1497 1437 19.19      
21 B1 1183 1136 1.58      
22 B1 726 697 92.89      
23 B1 685 658 3.77      
24 B1 326 313 0.05      
25 B1 107 103 9.11      
26 B2 3306 3174 4.51      
27 B2 3165 3039 16.69      
28 B2 3024 2903 64.31      
29 B2 1511 1451 34.76      
30 B2 1497 1437 48.97      
31 B2 1363 1308 508.93      
32 B2 1226 1177 9.42      
33 B2 1084 1041 93.32      
34 B2 950 912 1.30      
35 B2 561 538 0.37      
36 B2 398 382 7.13      

Unscaled Zero Point Vibrational Energy (zpe) 26133.6 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 25090.8 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 B1B95/6-311G**
ABC
0.30712 0.07781 0.06358

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.408
C2 0.000 0.000 0.069
H3 0.000 0.921 1.966
H4 0.000 -0.921 1.966
O5 0.000 1.075 -0.734
O6 0.000 -1.075 -0.734
C7 0.000 2.338 -0.107
C8 0.000 -2.338 -0.107
H9 0.000 3.071 -0.909
H10 0.000 -3.071 -0.909
H11 -0.892 2.470 0.513
H12 0.892 2.470 0.513
H13 0.892 -2.470 0.513
H14 -0.892 -2.470 0.513

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6 C7 C8 H9 H10 H11 H12 H13 H14
C11.33951.07701.07702.39672.39672.78562.78563.84703.84702.77462.77462.77462.7746
C21.33952.10922.10921.34161.34162.34432.34433.22303.22302.66352.66352.66352.6635
H31.07702.10921.84232.70453.35782.51053.86223.58974.91962.30362.30363.79583.7958
H41.07702.10921.84233.35782.70453.86222.51054.91963.58973.79583.79582.30362.3036
O52.39671.34162.70453.35782.14981.41013.46982.00404.14992.07292.07293.86243.8624
O62.39671.34163.35782.70452.14983.46981.41014.14992.00403.86243.86242.07292.0729
C72.78562.34432.51053.86221.41013.46984.67541.08675.46811.09391.09394.92904.9290
C82.78562.34433.86222.51053.46981.41014.67545.46811.08674.92904.92901.09391.0939
H93.84703.22303.58974.91962.00404.14991.08675.46816.14251.78231.78235.78995.7899
H103.84703.22304.91963.58974.14992.00405.46811.08676.14255.78995.78991.78231.7823
H112.77462.66352.30363.79582.07293.86241.09394.92901.78235.78991.78365.25254.9404
H122.77462.66352.30363.79582.07293.86241.09394.92901.78235.78991.78364.94045.2525
H132.77462.66353.79582.30363.86242.07294.92901.09395.78991.78235.25254.94041.7836
H142.77462.66353.79582.30363.86242.07294.92901.09395.78991.78234.94045.25251.7836

picture of Ethene, 1,1-dimethoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O5 126.752 C1 C2 O6 126.752
C2 C1 H3 121.203 C2 C1 H4 121.203
C2 O5 C7 116.827 C2 O6 C8 116.827
H3 C1 H4 117.594 O5 C2 O6 106.496
O5 C7 H9 106.035 O5 C7 H11 111.129
O5 C7 H12 111.129 O6 C8 H10 106.035
O6 C8 H13 111.129 O6 C8 H14 111.129
H9 C7 H11 109.638 H9 C7 H12 109.638
H10 C8 H13 109.638 H10 C8 H14 109.638
H11 C7 H12 109.219 H13 C8 H14 109.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.444      
2 C 0.384      
3 H 0.126      
4 H 0.126      
5 O -0.304      
6 O -0.304      
7 C -0.191      
8 C -0.191      
9 H 0.141      
10 H 0.141      
11 H 0.129      
12 H 0.129      
13 H 0.129      
14 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.130 1.130
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.358 0.000 0.000
y 0.000 -26.311 0.000
z 0.000 0.000 -39.268
Traceless
 xyz
x -5.569 0.000 0.000
y 0.000 12.502 0.000
z 0.000 0.000 -6.933
Polar
3z2-r2-13.867
x2-y2-12.047
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.679 0.000 0.000
y 0.000 9.546 0.000
z 0.000 0.000 8.009


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