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: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-229.674639
Energy at 298.15K-229.683273
Nuclear repulsion energy173.698956
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 HF/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 A 3433 3099 8.93      
2 A 3352 3025 2.36      
3 A 3315 2992 19.65      
4 A 3293 2973 32.30      
5 A 3278 2959 29.23      
6 A 3233 2918 37.90      
7 A 3215 2902 17.82      
8 A 3193 2882 37.49      
9 A 1870 1688 129.11      
10 A 1700 1534 8.49      
11 A 1673 1510 5.18      
12 A 1656 1495 5.02      
13 A 1600 1444 0.33      
14 A 1575 1422 10.26      
15 A 1539 1390 79.30      
16 A 1477 1333 0.83      
17 A 1431 1291 0.19      
18 A 1301 1174 74.74      
19 A 1275 1151 110.53      
20 A 1245 1124 123.22      
21 A 1169 1055 85.33      
22 A 1141 1030 9.38      
23 A 1069 965 104.22      
24 A 1036 935 6.51      
25 A 920 831 2.63      
26 A 906 817 7.16      
27 A 797 720 2.93      
28 A 521 470 2.88      
29 A 446 402 3.19      
30 A 258 233 1.22      
31 A 228 206 1.91      
32 A 82 74 3.96      
33 A 63 57 4.16      

Unscaled Zero Point Vibrational Energy (zpe) 26644.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 24049.4 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 HF/3-21G*
ABC
0.77052 0.07842 0.07434

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.420 -0.298 0.112
H2 -2.402 -1.334 0.384
H3 -3.368 0.196 0.053
C4 -1.310 0.345 -0.160
H5 -1.302 1.385 -0.434
O6 -0.077 -0.275 -0.153
C7 1.070 0.524 0.216
H8 1.007 0.800 1.261
H9 1.095 1.430 -0.379
C10 2.296 -0.339 -0.052
H11 2.237 -1.246 0.535
H12 2.326 -0.610 -1.100
H13 3.204 0.193 0.206

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 O6 C7 H8 H9 C10 H11 H12 H13
C11.07081.07061.31172.09322.35863.58763.77783.94854.71974.77144.90885.6465
H21.07081.83952.07483.04452.61023.94124.11604.52254.82184.64175.00775.8126
H31.07061.83952.07492.43343.33144.45384.57894.65165.69095.80765.86576.5741
C41.31172.07482.07491.07561.38002.41642.75582.64813.67203.94863.87484.5311
H52.09323.04452.43341.07562.08202.60582.92302.39824.00804.51444.19324.7042
O62.35862.61023.33141.38002.08201.44592.08122.08212.37622.60162.60443.3334
C73.58763.94124.45382.41642.60581.44591.08301.08511.52332.14342.14322.1591
H83.77784.11604.57892.75582.92302.08121.08301.75982.16542.49593.05022.5123
H93.94854.52254.65162.64812.39822.08211.08511.75982.16373.04982.48912.5137
C104.71974.82185.69093.67204.00802.37621.52332.16542.16371.08171.08181.0836
H114.77144.64175.80763.94864.51442.60162.14342.49593.04981.08171.75591.7650
H124.90885.00775.86573.87484.19322.60442.14323.05022.48911.08181.75591.7659
H135.64655.81266.57414.53114.70423.33342.15912.51232.51371.08361.76501.7659

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 122.213 C1 C4 O6 122.360
H2 C1 H3 118.407 H2 C1 C4 120.781
H3 C1 C4 120.804 C4 O6 C7 117.514
H5 C4 O6 115.402 O6 C7 H8 109.932
O6 C7 H9 109.878 O6 C7 C10 106.282
C7 C10 H11 109.568 C7 C10 H12 109.546
C7 C10 H13 110.706 H8 C7 H9 108.516
H8 C7 C10 111.240 H9 C7 C10 110.980
H11 C10 H12 108.507 H11 C10 H13 109.200
H12 C10 H13 109.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.511 -0.572    
2 H 0.230 0.223    
3 H 0.212 0.190    
4 C 0.180 0.230    
5 H 0.212 0.078    
6 O -0.680 -0.451    
7 C -0.081 0.388    
8 H 0.204 -0.012    
9 H 0.193 -0.008    
10 C -0.608 -0.348    
11 H 0.227 0.104    
12 H 0.224 0.098    
13 H 0.196 0.080    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.782 1.694 0.404 1.909
CHELPG 0.744 1.673 0.409 1.876
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.867 -0.018 0.240
y -0.018 -30.757 -0.976
z 0.240 -0.976 -33.385
Traceless
 xyz
x 3.204 -0.018 0.240
y -0.018 0.369 -0.976
z 0.240 -0.976 -3.573
Polar
3z2-r2-7.146
x2-y21.890
xy-0.018
xz0.240
yz-0.976


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.070 0.875 -0.327
y 0.875 5.784 -0.518
z -0.327 -0.518 4.018


<r2> (average value of r2) Å2
<r2> 161.964
(<r2>)1/2 12.727