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

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-192.470720
Energy at 298.15K-192.479647
HF Energy-192.034681
Nuclear repulsion energy131.014008
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 CCD/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' 3123 2987 22.85      
2 A' 3117 2981 28.93      
3 A' 3054 2921 12.22      
4 A' 2996 2865 54.13      
5 A' 2989 2859 17.15      
6 A' 1614 1544 0.67      
7 A' 1594 1525 6.12      
8 A' 1584 1515 6.53      
9 A' 1525 1459 1.55      
10 A' 1476 1412 9.32      
11 A' 1444 1382 32.13      
12 A' 1233 1180 20.91      
13 A' 1133 1083 5.30      
14 A' 1118 1069 76.38      
15 A' 995 952 4.40      
16 A' 844 807 8.55      
17 A' 456 436 1.40      
18 A' 277 265 4.22      
19 A" 3132 2995 24.89      
20 A" 3034 2902 63.33      
21 A" 3016 2885 50.54      
22 A" 1570 1502 5.43      
23 A" 1568 1500 3.59      
24 A" 1337 1279 0.00      
25 A" 1220 1167 8.60      
26 A" 1174 1123 0.04      
27 A" 867 830 0.56      
28 A" 261 250 3.23      
29 A" 212 203 0.92      
30 A" 114 109 4.63      

Unscaled Zero Point Vibrational Energy (zpe) 24038.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 22992.5 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 CCD/3-21G*
ABC
0.89114 0.13406 0.12485

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.359 1.262 0.000
O2 0.000 0.721 0.000
C3 0.005 -0.745 0.000
C4 -1.473 -1.175 0.000
H5 1.253 2.353 0.000
H6 1.923 0.950 0.895
H7 1.923 0.950 -0.895
H8 0.526 -1.132 -0.893
H9 0.526 -1.132 0.893
H10 -1.559 -2.270 0.000
H11 -1.969 -0.771 0.891
H12 -1.969 -0.771 -0.891

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.46272.42093.73641.09551.10291.10292.68742.68744.58194.00014.0001
O21.46271.46562.40112.05722.13342.13342.12292.12293.37312.62592.6259
C32.42091.46561.53943.33922.71152.71151.10381.10382.18502.16562.1656
C43.73642.40111.53944.45824.10514.10512.18992.18991.09821.09671.0967
H51.09552.05723.33924.45821.79361.79363.66973.66975.41094.57474.5747
H61.10292.13342.71154.10511.79361.78953.07902.50724.82684.25544.6148
H71.10292.13342.71154.10511.79361.78952.50723.07904.82684.61484.2554
H82.68742.12291.10382.18993.66973.07902.50721.78502.53813.08802.5211
H92.68742.12291.10382.18993.66972.50723.07901.78502.53812.52113.0880
H104.58193.37312.18501.09825.41094.82684.82682.53812.53811.79111.7911
H114.00012.62592.16561.09674.57474.25544.61483.08802.52111.79111.7815
H124.00012.62592.16561.09674.57474.61484.25542.52113.08801.79111.7815

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 111.529 O2 C1 H5 106.163
O2 C1 H6 111.748 O2 C1 H7 111.748
O2 C3 C4 106.050 O2 C3 H8 110.638
O2 C3 H9 110.638 C3 C4 H10 110.759
C3 C4 H11 109.322 C3 C4 H12 109.322
C4 C3 H8 110.812 C4 C3 H9 110.812
H5 C1 H6 109.344 H5 C1 H7 109.344
H6 C1 H7 108.442 H8 C3 H9 107.918
H10 C4 H11 109.388 H10 C4 H12 109.388
H11 C4 H12 108.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability