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All results from a given calculation for CH3OC2H5 (Ethane, methoxy-)

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-193.403427
Energy at 298.15K-193.412383
HF Energy-193.017788
Nuclear repulsion energy131.628813
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 CISD/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' 3213 3013 28.93      
2 A' 3180 2982 31.95      
3 A' 3106 2912 17.16      
4 A' 3066 2875 64.09      
5 A' 3049 2859 30.71      
6 A' 1620 1519 0.79      
7 A' 1595 1496 4.92      
8 A' 1589 1490 7.38      
9 A' 1547 1451 0.24      
10 A' 1512 1418 15.07      
11 A' 1479 1387 24.59      
12 A' 1266 1188 28.06      
13 A' 1170 1097 32.16      
14 A' 1147 1076 80.11      
15 A' 1052 986 13.62      
16 A' 865 811 13.98      
17 A' 469 440 1.21      
18 A' 285 268 4.50      
19 A" 3195 2997 33.62      
20 A" 3121 2927 68.44      
21 A" 3082 2890 61.28      
22 A" 1578 1479 6.60      
23 A" 1575 1477 4.35      
24 A" 1351 1267 0.14      
25 A" 1244 1167 12.09      
26 A" 1198 1124 0.35      
27 A" 872 818 0.32      
28 A" 260 244 2.97      
29 A" 200 187 2.95      
30 A" 108 101 5.55      

Unscaled Zero Point Vibrational Energy (zpe) 24495.8 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 22972.2 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 CISD/6-31G
ABC
0.92010 0.13387 0.12517

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.316 1.312 0.000
O2 0.000 0.707 0.000
C3 0.015 -0.746 0.000
C4 -1.436 -1.215 0.000
H5 1.155 2.390 0.000
H6 1.885 1.024 0.894
H7 1.885 1.024 -0.894
H8 0.551 -1.110 -0.889
H9 0.551 -1.110 0.889
H10 -1.488 -2.309 0.000
H11 -1.952 -0.837 0.887
H12 -1.952 -0.837 -0.887

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.44802.43483.73581.08971.09811.09812.69142.69144.57964.01064.0106
O21.44801.45322.39922.04112.10972.10972.09692.09693.36342.64252.6425
C32.43481.45321.52443.33692.72552.72551.10021.10022.16822.15952.1595
C43.73582.39921.52444.43944.10334.10332.17902.17901.09561.09351.0935
H51.08972.04113.33694.43941.78801.78803.66173.66175.39154.56704.5670
H61.09812.10972.72554.10331.78801.78783.08432.51694.82524.26444.6213
H71.09812.10972.72554.10331.78801.78782.51693.08434.82524.62134.2644
H82.69142.09691.10022.17903.66173.08432.51691.77782.52653.08112.5180
H92.69142.09691.10022.17903.66172.51693.08431.77782.52652.51803.0811
H104.57963.36342.16821.09565.39154.82524.82522.52652.52651.78031.7803
H114.01062.64252.15951.09354.56704.26444.62133.08112.51801.78031.7736
H124.01062.64252.15951.09354.56704.62134.26442.51803.08111.78031.7736

picture of Ethane, methoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 114.116 O2 C1 H5 106.229
O2 C1 H6 111.171 O2 C1 H7 111.171
O2 C3 C4 107.338 O2 C3 H8 109.641
O2 C3 H9 109.641 C3 C4 H10 110.626
C3 C4 H11 110.065 C3 C4 H12 110.065
C4 C3 H8 111.212 C4 C3 H9 111.212
H5 C1 H6 109.619 H5 C1 H7 109.619
H6 C1 H7 108.990 H8 C3 H9 107.793
H10 C4 H11 108.827 H10 C4 H12 108.827
H11 C4 H12 108.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability