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-307.577527
Energy at 298.15K-307.587144
Nuclear repulsion energy250.420440
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 3218 3085 0.32      
2 A1 3172 3040 27.04      
3 A1 3032 2906 9.61      
4 A1 1715 1644 266.29      
5 A1 1534 1471 2.63      
6 A1 1500 1438 18.53      
7 A1 1426 1367 8.79      
8 A1 1253 1201 3.49      
9 A1 1200 1151 0.52      
10 A1 908 871 43.48      
11 A1 510 489 0.51      
12 A1 284 272 4.43      
13 A2 3096 2968 0.00      
14 A2 1516 1453 0.00      
15 A2 1192 1142 0.00      
16 A2 679 651 0.00      
17 A2 307 295 0.00      
18 A2 142 136 0.00      
19 B1 3097 2969 88.05      
20 B1 1516 1453 19.55      
21 B1 1196 1146 1.42      
22 B1 720 691 94.82      
23 B1 685 656 9.49      
24 B1 328 315 0.02      
25 B1 107 103 9.11      
26 B2 3301 3164 6.40      
27 B2 3172 3040 19.08      
28 B2 3031 2906 68.61      
29 B2 1528 1465 28.61      
30 B2 1509 1447 47.97      
31 B2 1369 1313 510.78      
32 B2 1236 1185 9.94      
33 B2 1091 1045 99.27      
34 B2 955 915 1.16      
35 B2 561 538 0.40      
36 B2 396 380 7.00      

Unscaled Zero Point Vibrational Energy (zpe) 26240.5 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 25154.1 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
0.30717 0.07788 0.06363

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 1.407
C2 0.000 0.000 0.068
H3 0.000 0.920 1.969
H4 0.000 -0.920 1.969
O5 0.000 1.076 -0.734
O6 0.000 -1.076 -0.734
C7 0.000 2.336 -0.106
C8 0.000 -2.336 -0.106
H9 0.000 3.070 -0.907
H10 0.000 -3.070 -0.907
H11 -0.892 2.468 0.513
H12 0.892 2.468 0.513
H13 0.892 -2.468 0.513
H14 -0.892 -2.468 0.513

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6 C7 C8 H9 H10 H11 H12 H13 H14
C11.33941.07811.07812.39632.39632.78332.78333.84473.84472.77212.77212.77212.7721
C21.33942.11242.11241.34161.34162.34252.34253.22123.22122.66172.66172.66172.6617
H31.07812.11241.83972.70813.36022.51253.86113.59134.91882.30472.30473.79373.7937
H41.07812.11241.83973.36022.70813.86112.51254.91883.59133.79373.79372.30472.3047
O52.39631.34162.70813.36022.15111.40843.46902.00214.14932.07132.07133.86113.8611
O62.39631.34163.36022.70812.15113.46901.40844.14932.00213.86113.86112.07132.0713
C72.78332.34252.51253.86111.40843.46904.67211.08665.46531.09361.09364.92524.9252
C82.78332.34253.86112.51253.46901.40844.67215.46531.08664.92524.92521.09361.0936
H93.84473.22123.59134.91882.00214.14931.08665.46536.14041.78191.78195.78655.7865
H103.84473.22124.91883.59134.14932.00215.46531.08666.14045.78655.78651.78191.7819
H112.77212.66172.30473.79372.07133.86111.09364.92521.78195.78651.78335.24824.9360
H122.77212.66172.30473.79372.07133.86111.09364.92521.78195.78651.78334.93605.2482
H132.77212.66173.79372.30473.86112.07134.92521.09365.78651.78195.24824.93601.7833
H142.77212.66173.79372.30473.86112.07134.92521.09365.78651.78194.93605.24821.7833

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 126.710 C1 C2 O6 126.710
C2 C1 H3 121.434 C2 C1 H4 121.434
C2 O5 C7 116.800 C2 O6 C8 116.800
H3 C1 H4 117.132 O5 C2 O6 106.580
O5 C7 H9 106.013 O5 C7 H11 111.136
O5 C7 H12 111.136 O6 C8 H10 106.013
O6 C8 H13 111.136 O6 C8 H14 111.136
H9 C7 H11 109.635 H9 C7 H12 109.635
H10 C8 H13 109.635 H10 C8 H14 109.635
H11 C7 H12 109.233 H13 C8 H14 109.233
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 -0.691      
2 C 0.461      
3 H 0.226      
4 H 0.226      
5 O -0.293      
6 O -0.293      
7 C -0.501      
8 C -0.501      
9 H 0.236      
10 H 0.236      
11 H 0.223      
12 H 0.223      
13 H 0.223      
14 H 0.223      


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 1.148 1.148
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.509 0.000 0.000
y 0.000 -26.342 0.000
z 0.000 0.000 -39.250
Traceless
 xyz
x -5.713 0.000 0.000
y 0.000 12.538 0.000
z 0.000 0.000 -6.825
Polar
3z2-r2-13.649
x2-y2-12.167
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.584 0.000 0.000
y 0.000 9.338 0.000
z 0.000 0.000 7.919


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