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: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-59.222903
Energy at 298.15K-59.232018
Nuclear repulsion energy135.559128
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 B3LYP/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 A1 3209 3108 0.01      
2 A1 3183 3082 46.11      
3 A1 3028 2932 14.43      
4 A1 1654 1602 222.91      
5 A1 1507 1459 5.01      
6 A1 1489 1442 18.36      
7 A1 1426 1381 15.18      
8 A1 1198 1160 0.96      
9 A1 1109 1074 1.72      
10 A1 829 803 38.27      
11 A1 469 455 0.51      
12 A1 250 242 7.07      
13 A2 3115 3017 0.00      
14 A2 1498 1450 0.00      
15 A2 1147 1111 0.00      
16 A2 655 635 0.00      
17 A2 239 231 0.00      
18 A2 119 116 0.00      
19 B1 3116 3018 136.18      
20 B1 1498 1450 21.78      
21 B1 1151 1115 0.00      
22 B1 773 749 155.09      
23 B1 620 600 5.50      
24 B1 254 246 0.37      
25 B1 93 90 16.73      
26 B2 3303 3198 18.42      
27 B2 3182 3082 23.98      
28 B2 3028 2932 91.59      
29 B2 1502 1454 16.00      
30 B2 1484 1437 22.66      
31 B2 1306 1265 446.47      
32 B2 1186 1149 34.39      
33 B2 1024 991 110.55      
34 B2 896 868 0.35      
35 B2 536 519 0.71      
36 B2 353 342 11.49      

Unscaled Zero Point Vibrational Energy (zpe) 25714.5 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 24902.0 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 B3LYP/CEP-31G
ABC
0.28967 0.07216 0.05910

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.446
C2 0.000 0.000 0.066
H3 0.000 0.930 2.011
H4 0.000 -0.930 2.011
O5 0.000 1.116 -0.765
O6 0.000 -1.116 -0.765
C7 0.000 2.433 -0.123
C8 0.000 -2.433 -0.123
H9 0.000 3.155 -0.949
H10 0.000 -3.155 -0.949
H11 -0.904 2.566 0.499
H12 0.904 2.566 0.499
H13 0.904 -2.566 0.499
H14 -0.904 -2.566 0.499

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6 C7 C8 H9 H10 H11 H12 H13 H14
C11.37951.08841.08842.47682.47682.89492.89493.96083.96082.88052.88052.88052.8805
C21.37952.15612.15611.39201.39202.44072.44073.31433.31432.75452.75452.75452.7545
H31.08842.15611.85932.78323.44932.61063.98303.70375.04472.40482.40483.91463.9146
H41.08842.15611.85933.44932.78323.98302.61065.04473.70373.91463.91462.40482.4048
O52.47681.39202.78323.44932.23281.46563.60762.04694.27542.12492.12493.99663.9966
O62.47681.39203.44932.78322.23283.60761.46564.27542.04693.99663.99662.12492.1249
C72.89492.44072.61063.98301.46563.60764.86691.09725.64931.10451.10455.11815.1181
C82.89492.44073.98302.61063.60761.46564.86695.64931.09725.11815.11811.10451.1045
H93.96083.31433.70375.04472.04694.27541.09725.64936.31011.80541.80545.96995.9699
H103.96083.31435.04473.70374.27542.04695.64931.09726.31015.96995.96991.80541.8054
H112.88052.75452.40483.91462.12493.99661.10455.11811.80545.96991.80765.44075.1316
H122.88052.75452.40483.91462.12493.99661.10455.11811.80545.96991.80765.13165.4407
H132.88052.75453.91462.40483.99662.12495.11811.10455.96991.80545.44075.13161.8076
H142.88052.75453.91462.40483.99662.12495.11811.10455.96991.80545.13165.44071.8076

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 126.678 C1 C2 O6 126.678
C2 C1 H3 121.331 C2 C1 H4 121.331
C2 O5 C7 117.302 C2 O6 C8 117.302
H3 C1 H4 117.337 O5 C2 O6 106.644
O5 C7 H9 105.102 O5 C7 H11 110.753
O5 C7 H12 110.753 O6 C8 H10 105.102
O6 C8 H13 110.753 O6 C8 H14 110.753
H9 C7 H11 110.165 H9 C7 H12 110.165
H10 C8 H13 110.165 H10 C8 H14 110.165
H11 C7 H12 109.819 H13 C8 H14 109.819
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.471      
2 C -0.028      
3 H 0.213      
4 H 0.213      
5 O -0.141      
6 O -0.141      
7 C -0.395      
8 C -0.395      
9 H 0.222      
10 H 0.222      
11 H 0.175      
12 H 0.175      
13 H 0.175      
14 H 0.175      


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 2.272 2.272
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.589 0.000 0.000
y 0.000 -23.427 0.000
z 0.000 0.000 -40.621
Traceless
 xyz
x -6.565 0.000 0.000
y 0.000 16.178 0.000
z 0.000 0.000 -9.613
Polar
3z2-r2-19.226
x2-y2-15.162
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.882 0.000 0.000
y 0.000 8.955 0.000
z 0.000 0.000 7.882


<r2> (average value of r2) Å2
<r2> 161.349
(<r2>)1/2 12.702