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All results from a given calculation for C4H8O2 (Ethene, 1,1-dimethoxy-)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-305.815621
Energy at 298.15K-305.825072
Nuclear repulsion energy246.646645
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 B1B95/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3246 3105 0.88      
2 A1 3188 3050 16.43      
3 A1 3044 2912 4.93      
4 A1 1710 1636 177.41      
5 A1 1575 1507 5.04      
6 A1 1525 1459 10.33      
7 A1 1464 1401 15.53      
8 A1 1215 1162 2.00      
9 A1 1137 1088 0.53      
10 A1 859 822 35.75      
11 A1 495 474 0.01      
12 A1 266 255 6.02      
13 A2 3104 2969 0.00      
14 A2 1551 1484 0.00      
15 A2 1168 1118 0.00      
16 A2 681 652 0.00      
17 A2 270 258 0.00      
18 A2 127 122 0.00      
19 B1 3105 2970 68.75      
20 B1 1551 1484 20.83      
21 B1 1173 1122 0.03      
22 B1 831 795 140.32      
23 B1 692 662 0.89      
24 B1 295 282 0.10      
25 B1 95 91 12.87      
26 B2 3326 3182 5.28      
27 B2 3188 3050 11.44      
28 B2 3043 2912 43.93      
29 B2 1569 1501 21.42      
30 B2 1517 1452 47.25      
31 B2 1356 1297 394.82      
32 B2 1199 1148 41.65      
33 B2 1058 1012 108.51      
34 B2 945 904 0.41      
35 B2 557 533 0.37      
36 B2 376 360 11.97      

Unscaled Zero Point Vibrational Energy (zpe) 26251.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25114.6 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 B1B95/3-21G
ABC
0.30226 0.07504 0.06152

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.409
C2 0.000 0.000 0.073
H3 0.000 0.920 1.972
H4 0.000 -0.920 1.972
O5 0.000 1.093 -0.751
O6 0.000 -1.093 -0.751
C7 0.000 2.385 -0.094
C8 0.000 -2.385 -0.094
H9 0.000 3.117 -0.899
H10 0.000 -3.117 -0.899
H11 -0.892 2.510 0.529
H12 0.892 2.510 0.529
H13 0.892 -2.510 0.529
H14 -0.892 -2.510 0.529

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6 C7 C8 H9 H10 H11 H12 H13 H14
C11.33691.07801.07802.42142.42142.81962.81963.87913.87912.80572.80572.80572.8057
C21.33692.11012.11011.36861.36862.39102.39103.26543.26542.70282.70282.70282.7028
H31.07802.11011.83962.72853.38602.53293.89763.61534.95382.32512.32513.82653.8265
H41.07802.11011.83963.38602.72853.89762.53294.95383.61533.82653.82652.32512.3251
O52.42141.36862.72853.38602.18561.44983.53952.03004.21282.10812.10813.92643.9264
O62.42141.36863.38602.72852.18563.53951.44984.21282.03003.92643.92642.10812.1081
C72.81962.39102.53293.89761.44983.53954.77031.08805.56111.09531.09535.01495.0149
C82.81962.39103.89762.53293.53951.44984.77035.56111.08805.01495.01491.09531.0953
H93.87913.26543.61534.95382.03004.21281.08805.56116.23491.78981.78985.87425.8742
H103.87913.26544.95383.61534.21282.03005.56111.08806.23495.87425.87421.78981.7898
H112.80572.70282.32513.82652.10813.92641.09535.01491.78985.87421.78375.32805.0205
H122.80572.70282.32513.82652.10813.92641.09535.01491.78985.87421.78375.02055.3280
H132.80572.70283.82652.32513.92642.10815.01491.09535.87421.78985.32805.02051.7837
H142.80572.70283.82652.32513.92642.10815.01491.09535.87421.78985.02055.32801.7837

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 127.016 C1 C2 O6 127.016
C2 C1 H3 121.433 C2 C1 H4 121.433
C2 O5 C7 116.037 C2 O6 C8 116.037
H3 C1 H4 117.134 O5 C2 O6 105.969
O5 C7 H9 105.353 O5 C7 H11 111.085
O5 C7 H12 111.085 O6 C8 H10 105.353
O6 C8 H13 111.085 O6 C8 H14 111.085
H9 C7 H11 110.126 H9 C7 H12 110.126
H10 C8 H13 110.126 H10 C8 H14 110.126
H11 C7 H12 109.028 H13 C8 H14 109.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.535      
2 C 0.600      
3 H 0.199      
4 H 0.199      
5 O -0.529      
6 O -0.529      
7 C -0.371      
8 C -0.371      
9 H 0.240      
10 H 0.240      
11 H 0.214      
12 H 0.214      
13 H 0.214      
14 H 0.214      


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 1.660 1.660
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.200 0.000 0.000
y 0.000 -24.493 0.000
z 0.000 0.000 -39.336
Traceless
 xyz
x -6.285 0.000 0.000
y 0.000 14.274 0.000
z 0.000 0.000 -7.989
Polar
3z2-r2-15.978
x2-y2-13.706
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.151 0.000 0.000
y 0.000 8.812 0.000
z 0.000 0.000 7.064


<r2> (average value of r2) Å2
<r2> 189.734
(<r2>)1/2 13.774