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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-193.739155
Energy at 298.15K-193.748194
HF Energy-193.116234
Nuclear repulsion energy133.783832
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 MP2/6-31G**
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' 3238 3033 35.30      
2 A' 3238 3032 14.99      
3 A' 3140 2941 13.55      
4 A' 3076 2880 66.25      
5 A' 3056 2862 39.79      
6 A' 1593 1492 0.33      
7 A' 1569 1469 4.66      
8 A' 1561 1462 4.08      
9 A' 1526 1429 0.47      
10 A' 1479 1385 37.79      
11 A' 1438 1347 11.41      
12 A' 1268 1187 44.77      
13 A' 1195 1119 115.89      
14 A' 1149 1076 3.41      
15 A' 1067 999 17.08      
16 A' 895 838 11.76      
17 A' 476 446 0.70      
18 A' 295 276 2.90      
19 A" 3249 3042 21.54      
20 A" 3145 2945 57.58      
21 A" 3102 2905 68.04      
22 A" 1549 1450 4.79      
23 A" 1545 1447 3.08      
24 A" 1332 1247 0.92      
25 A" 1236 1158 10.55      
26 A" 1197 1121 0.03      
27 A" 847 793 0.10      
28 A" 280 262 2.22      
29 A" 222 208 1.69      
30 A" 114 107 2.78      

Unscaled Zero Point Vibrational Energy (zpe) 24537.1 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 22979.0 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 MP2/6-31G**
ABC
0.93574 0.13971 0.13047

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.324 1.226 0.000
O2 0.005 0.715 0.000
C3 0.000 -0.705 0.000
C4 -1.441 -1.163 0.000
H5 1.244 2.310 0.000
H6 1.879 0.906 0.888
H7 1.879 0.906 -0.888
H8 0.530 -1.085 -0.884
H9 0.530 -1.085 0.884
H10 -1.495 -2.251 0.000
H11 -1.952 -0.787 0.883
H12 -1.952 -0.787 -0.883

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.41472.34113.65381.08671.09521.09522.59842.59844.47633.94513.9451
O21.41471.41912.36952.02052.08292.08292.07202.07203.32322.61982.6198
C32.34111.41911.51173.26142.62972.62971.09811.09812.15092.14422.1442
C43.65382.36951.51174.39004.01154.01152.16072.16071.08921.08771.0877
H51.08672.02053.26144.39001.77821.77823.57993.57995.32054.53744.5374
H61.09522.08292.62974.01151.77821.77612.98732.40534.70564.18884.5478
H71.09522.08292.62974.01151.77821.77612.40532.98734.70564.54784.1888
H82.59842.07201.09812.16073.57992.98732.40531.76732.49823.06102.4998
H92.59842.07201.09812.16073.57992.40532.98731.76732.49822.49983.0610
H104.47633.32322.15091.08925.32054.70564.70562.49822.49821.76991.7699
H113.94512.61982.14421.08774.53744.18884.54783.06102.49981.76991.7659
H123.94512.61982.14421.08774.53744.54784.18882.49983.06101.76991.7659

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 111.405 O2 C1 H5 107.024
O2 C1 H6 111.539 O2 C1 H7 111.539
O2 C3 C4 107.849 O2 C3 H8 110.146
O2 C3 H9 110.146 C3 C4 H10 110.525
C3 C4 H11 110.080 C3 C4 H12 110.080
C4 C3 H8 110.776 C4 C3 H9 110.776
H5 C1 H6 109.170 H5 C1 H7 109.170
H6 C1 H7 108.351 H8 C3 H9 107.164
H10 C4 H11 108.790 H10 C4 H12 108.790
H11 C4 H12 108.530
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability