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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-193.787606
Energy at 298.15K-193.796632
HF Energy-193.116271
Nuclear repulsion energy133.618196
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/6-31G**
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' 3204 3016 36.04      
2 A' 3199 3012 28.07      
3 A' 3115 2933 16.55      
4 A' 3056 2877 73.82      
5 A' 3038 2860 36.01      
6 A' 1595 1501 0.56      
7 A' 1568 1476 5.33      
8 A' 1559 1468 2.91      
9 A' 1530 1440 0.45      
10 A' 1484 1397 38.87      
11 A' 1444 1359 13.93      
12 A' 1274 1199 49.94      
13 A' 1200 1129 114.66      
14 A' 1148 1081 2.81      
15 A' 1067 1005 16.09      
16 A' 896 844 11.96      
17 A' 477 449 0.71      
18 A' 295 278 2.73      
19 A" 3209 3021 29.72      
20 A" 3112 2930 67.28      
21 A" 3073 2893 68.78      
22 A" 1547 1456 3.98      
23 A" 1544 1453 2.48      
24 A" 1332 1254 1.20      
25 A" 1239 1166 11.03      
26 A" 1198 1128 0.11      
27 A" 845 795 0.01      
28 A" 275 259 2.31      
29 A" 218 205 1.78      
30 A" 112 106 2.79      

Unscaled Zero Point Vibrational Energy (zpe) 24425.0 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 22993.7 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/6-31G**
ABC
0.93678 0.13910 0.12998

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.324 1.231 0.000
O2 0.009 0.713 0.000
C3 0.000 -0.706 0.000
C4 -1.444 -1.165 0.000
H5 1.242 2.316 0.000
H6 1.882 0.913 0.889
H7 1.882 0.913 -0.889
H8 0.529 -1.087 -0.884
H9 0.529 -1.087 0.884
H10 -1.499 -2.255 0.000
H11 -1.958 -0.789 0.884
H12 -1.958 -0.789 -0.884

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.41412.34603.66151.08811.09651.09652.60542.60544.48543.95383.9538
O21.41411.41882.37472.02222.08342.08342.07242.07243.32872.62742.6274
C32.34601.41881.51563.26662.63672.63671.09891.09892.15542.14962.1496
C43.66152.37471.51564.39704.02174.02172.16382.16381.09081.08951.0895
H51.08812.02223.26664.39701.77981.77983.58763.58765.32924.54504.5450
H61.09652.08342.63674.02171.77981.77812.99612.41494.71744.19994.5589
H71.09652.08342.63674.02171.77981.77812.41492.99614.71744.55894.1999
H82.60542.07241.09892.16383.58762.99612.41491.76852.50123.06602.5046
H92.60542.07241.09892.16383.58762.41492.99611.76852.50122.50463.0660
H104.48543.32872.15541.09085.32924.71744.71742.50122.50121.77251.7725
H113.95382.62742.14961.08954.54504.19994.55893.06602.50461.77251.7681
H123.95382.62742.14961.08954.54504.55894.19992.50463.06601.77251.7681

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 111.811 O2 C1 H5 107.122
O2 C1 H6 111.539 O2 C1 H7 111.539
O2 C3 C4 108.000 O2 C3 H8 110.151
O2 C3 H9 110.151 C3 C4 H10 110.510
C3 C4 H11 110.135 C3 C4 H12 110.135
C4 C3 H8 110.697 C4 C3 H9 110.697
H5 C1 H6 109.117 H5 C1 H7 109.117
H6 C1 H7 108.356 H8 C3 H9 107.157
H10 C4 H11 108.768 H10 C4 H12 108.768
H11 C4 H12 108.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability