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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-193.802787
Energy at 298.15K-193.811802
HF Energy-193.144876
Nuclear repulsion energy133.623134
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 QCISD/6-311G*
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' 3136 3002 33.70      
2 A' 3124 2991 30.91      
3 A' 3047 2917 17.95      
4 A' 2992 2865 84.84      
5 A' 2978 2851 32.08      
6 A' 1568 1502 1.89      
7 A' 1541 1475 7.80      
8 A' 1531 1466 4.04      
9 A' 1512 1448 0.44      
10 A' 1465 1403 39.99      
11 A' 1428 1367 2.18      
12 A' 1269 1215 51.04      
13 A' 1196 1145 118.72      
14 A' 1139 1091 4.38      
15 A' 1064 1018 18.62      
16 A' 892 854 11.03      
17 A' 480 459 0.64      
18 A' 298 285 2.77      
19 A" 3131 2998 33.11      
20 A" 3040 2911 68.45      
21 A" 3009 2881 70.15      
22 A" 1518 1453 7.95      
23 A" 1512 1448 5.86      
24 A" 1323 1267 1.99      
25 A" 1226 1174 10.98      
26 A" 1190 1139 0.00      
27 A" 835 799 0.04      
28 A" 271 260 2.67      
29 A" 218 209 1.84      
30 A" 109 105 2.55      

Unscaled Zero Point Vibrational Energy (zpe) 24020.7 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 22997.4 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 QCISD/6-311G*
ABC
0.93588 0.13929 0.13023

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.324 1.225 0.000
O2 0.011 0.714 0.000
C3 0.000 -0.700 0.000
C4 -1.446 -1.164 0.000
H5 1.246 2.315 0.000
H6 1.882 0.904 0.894
H7 1.882 0.904 -0.894
H8 0.531 -1.081 -0.890
H9 0.531 -1.081 0.890
H10 -1.500 -2.259 0.000
H11 -1.964 -0.787 0.888
H12 -1.964 -0.787 -0.888

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.40912.33583.65741.09301.10191.10192.59582.59584.48453.95573.9557
O21.40911.41362.37642.02252.08262.08262.07012.07013.33472.63472.6347
C32.33581.41361.51833.26212.62912.62911.10431.10432.16372.15732.1573
C43.65742.37641.51834.39884.01844.01842.16932.16931.09641.09511.0951
H51.09302.02253.26214.39881.78761.78763.58313.58315.33524.55194.5519
H61.10192.08262.62914.01841.78761.78842.99122.40104.71584.20144.5637
H71.10192.08262.62914.01841.78761.78842.40102.99124.71584.56374.2014
H82.59582.07011.10432.16933.58312.99122.40101.77932.51073.07782.5126
H92.59582.07011.10432.16933.58312.40102.99121.77932.51072.51263.0778
H104.48453.33472.16371.09645.33524.71584.71582.51072.51071.78061.7806
H113.95572.63472.15731.09514.55194.20144.56373.07782.51261.78061.7758
H123.95572.63472.15731.09514.55194.56374.20142.51263.07781.78061.7758

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 111.692 O2 C1 H5 107.188
O2 C1 H6 111.490 O2 C1 H7 111.490
O2 C3 C4 108.244 O2 C3 H8 110.003
O2 C3 H9 110.003 C3 C4 H10 110.647
C3 C4 H11 110.219 C3 C4 H12 110.219
C4 C3 H8 110.625 C4 C3 H9 110.625
H5 C1 H6 109.064 H5 C1 H7 109.064
H6 C1 H7 108.490 H8 C3 H9 107.345
H10 C4 H11 108.676 H10 C4 H12 108.676
H11 C4 H12 108.344
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability