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 C2H3OC2H5 (Ethene, ethoxy-)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-231.679838
Energy at 298.15K-231.688312
HF Energy-230.951322
Nuclear repulsion energy173.978728
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3330 3125 6.97      
2 A 3239 3040 0.59      
3 A 3205 3008 22.23      
4 A 3196 3000 26.28      
5 A 3194 2998 16.09      
6 A 3114 2923 13.08      
7 A 3109 2918 43.94      
8 A 3066 2877 42.32      
9 A 1777 1667 110.87      
10 A 1590 1493 5.89      
11 A 1560 1465 3.05      
12 A 1545 1450 5.18      
13 A 1496 1405 18.50      
14 A 1475 1384 37.82      
15 A 1444 1355 38.24      
16 A 1380 1295 2.44      
17 A 1339 1257 0.42      
18 A 1262 1184 171.18      
19 A 1224 1149 34.58      
20 A 1201 1127 99.30      
21 A 1135 1065 11.01      
22 A 1019 956 10.64      
23 A 987 926 24.03      
24 A 892 838 5.87      
25 A 847 795 0.50      
26 A 843 792 50.96      
27 A 727 683 2.10      
28 A 506 475 1.61      
29 A 450 422 1.56      
30 A 266 250 0.81      
31 A 226 212 1.02      
32 A 90 84 3.12      
33 A 68 64 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 25399.6 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23840.1 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 MP3/6-31G*
ABC
0.78723 0.07909 0.07462

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.428 -0.287 0.090
H2 -2.455 -1.351 0.296
H3 -3.366 0.252 0.038
C4 -1.277 0.350 -0.118
H5 -1.227 1.419 -0.327
O6 -0.078 -0.309 -0.133
C7 1.049 0.515 0.161
H8 0.980 0.885 1.193
H9 1.058 1.385 -0.510
C10 2.294 -0.327 -0.031
H11 2.272 -1.191 0.638
H12 2.349 -0.688 -1.061
H13 3.190 0.263 0.186

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 O6 C7 H8 H9 C10 H11 H12 H13
C11.08391.08291.33192.12822.36103.56933.76993.91284.72414.81824.93085.6458
H21.08391.86212.10953.09342.63003.97144.19564.52474.86864.74195.03595.8714
H31.08291.86212.09672.46403.33984.42434.54154.59915.68995.85095.89556.5573
C41.33192.10952.09671.09071.36852.34872.66502.58423.63593.94283.88844.4782
H52.12823.09342.46401.09072.08422.49692.73242.29193.94114.47074.21504.5939
O62.36102.63003.33981.36852.08421.42682.07522.07452.37442.62622.62633.3328
C73.56933.97144.42432.34872.49691.42681.09841.09961.51532.15272.15222.1558
H83.76994.19564.54152.66502.73242.07521.09841.77672.16672.50803.07112.5069
H93.91284.52474.59912.58422.29192.07451.09961.77672.16583.07112.50402.5080
C104.72414.86865.68993.63593.94112.37441.51532.16672.16581.09281.09291.0942
H114.81824.74195.85093.94284.47072.62622.15272.50803.07111.09281.77371.7777
H124.93085.03595.89553.88844.21502.62632.15223.07112.50401.09291.77371.7787
H135.64585.87146.55734.47824.59393.33282.15582.50692.50801.09421.77771.7787

picture of Ethene, ethoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H5 122.610 C1 C4 O6 121.920
H2 C1 H3 118.502 H2 C1 C4 121.325
H3 C1 C4 120.165 C4 O6 C7 114.314
H5 C4 O6 115.423 O6 C7 H8 109.850
O6 C7 H9 109.724 O6 C7 C10 107.577
C7 C10 H11 110.197 C7 C10 H12 110.163
C7 C10 H13 110.365 H8 C7 H9 107.865
H8 C7 C10 110.983 H9 C7 C10 110.843
H11 C10 H12 108.487 H11 C10 H13 108.745
H12 C10 H13 108.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability