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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-193.634805
Energy at 298.15K-193.643899
HF Energy-193.104382
Nuclear repulsion energy134.126243
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' 3250 3009 34.33      
2 A' 3239 2998 28.53      
3 A' 3160 2926 15.36      
4 A' 3110 2879 72.40      
5 A' 3091 2862 32.18      
6 A' 1629 1508 0.82      
7 A' 1600 1481 6.01      
8 A' 1591 1473 3.49      
9 A' 1569 1453 0.00      
10 A' 1523 1410 41.86      
11 A' 1481 1371 8.85      
12 A' 1316 1218 68.27      
13 A' 1245 1153 117.91      
14 A' 1179 1092 4.88      
15 A' 1099 1017 17.36      
16 A' 924 855 11.40      
17 A' 489 452 0.80      
18 A' 302 280 3.19      
19 A" 3249 3008 29.06      
20 A" 3162 2928 67.07      
21 A" 3126 2894 64.92      
22 A" 1583 1465 5.23      
23 A" 1575 1458 4.02      
24 A" 1368 1267 1.38      
25 A" 1269 1175 11.49      
26 A" 1231 1140 0.01      
27 A" 865 800 0.11      
28 A" 280 259 2.65      
29 A" 222 206 2.09      
30 A" 117 108 3.19      

Unscaled Zero Point Vibrational Energy (zpe) 24922.1 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 23072.9 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
0.94808 0.13990 0.13086

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 1.317 1.230 0.000
O2 0.016 0.704 0.000
C3 0.000 -0.704 0.000
C4 -1.442 -1.159 0.000
H5 1.228 2.313 0.000
H6 1.876 0.918 0.888
H7 1.876 0.918 -0.888
H8 0.526 -1.086 -0.883
H9 0.526 -1.086 0.883
H10 -1.501 -2.247 0.000
H11 -1.956 -0.782 0.883
H12 -1.956 -0.782 -0.883

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.40372.33983.64981.08681.09471.09472.60182.60184.47603.94193.9419
O21.40371.40832.36592.01402.07262.07262.06072.06073.31872.62192.6219
C32.33981.40831.51223.25702.63422.63421.09671.09672.15312.14702.1470
C43.64982.36591.51224.37984.01414.01412.15872.15871.09001.08861.0886
H51.08682.01403.25704.37981.77641.77643.58133.58135.31444.52664.5266
H61.09472.07262.63424.01411.77641.77642.99582.41634.71314.19184.5505
H71.09472.07262.63424.01411.77641.77642.41632.99584.71314.55054.1918
H82.60182.06071.09672.15873.58132.99582.41631.76552.49763.06112.5007
H92.60182.06071.09672.15873.58132.41632.99581.76552.49762.50073.0611
H104.47603.31872.15311.09005.31444.71314.71312.49762.49761.77031.7703
H113.94192.62192.14701.08864.52664.19184.55053.06112.50071.77031.7655
H123.94192.62192.14701.08864.52664.55054.19182.50073.06111.77031.7655

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 112.625 O2 C1 H5 107.248
O2 C1 H6 111.508 O2 C1 H7 111.508
O2 C3 C4 108.158 O2 C3 H8 110.080
O2 C3 H9 110.080 C3 C4 H10 110.613
C3 C4 H11 110.213 C3 C4 H12 110.213
C4 C3 H8 110.662 C4 C3 H9 110.662
H5 C1 H6 109.032 H5 C1 H7 109.032
H6 C1 H7 108.458 H8 C3 H9 107.206
H10 C4 H11 108.693 H10 C4 H12 108.693
H11 C4 H12 108.357
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability