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

using model chemistry: MP2/CEP-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/CEP-31G*
 hartrees
Energy at 0K-37.339469
Energy at 298.15K-37.348450
HF Energy-36.797609
Nuclear repulsion energy77.813213
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/CEP-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' 3199 3037 42.52      
2 A' 3196 3034 31.31      
3 A' 3099 2942 22.27      
4 A' 3045 2891 102.66      
5 A' 3037 2883 44.32      
6 A' 1553 1475 0.86      
7 A' 1531 1454 4.59      
8 A' 1526 1449 4.22      
9 A' 1501 1426 0.07      
10 A' 1461 1387 38.59      
11 A' 1413 1342 6.63      
12 A' 1249 1185 38.36      
13 A' 1169 1110 121.40      
14 A' 1132 1075 7.25      
15 A' 1051 998 22.05      
16 A' 880 836 11.22      
17 A' 468 445 0.70      
18 A' 290 276 3.88      
19 A" 3208 3046 36.28      
20 A" 3122 2964 63.61      
21 A" 3092 2935 80.82      
22 A" 1514 1437 8.44      
23 A" 1510 1434 3.02      
24 A" 1312 1246 0.41      
25 A" 1210 1149 9.29      
26 A" 1178 1118 0.30      
27 A" 832 790 0.73      
28 A" 272 258 2.84      
29 A" 222 211 1.72      
30 A" 120 114 3.38      

Unscaled Zero Point Vibrational Energy (zpe) 24195.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 22971.3 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/CEP-31G*
ABC
0.90863 0.13703 0.12790

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.346 1.225 0.000
O2 0.005 0.729 0.000
C3 0.000 -0.707 0.000
C4 -1.463 -1.170 0.000
H5 1.276 2.323 0.000
H6 1.897 0.889 0.902
H7 1.897 0.889 -0.902
H8 0.534 -1.084 -0.899
H9 0.534 -1.084 0.899
H10 -1.513 -2.274 0.000
H11 -1.981 -0.788 0.896
H12 -1.981 -0.788 -0.896

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.43002.35413.69091.10081.10941.10942.60692.60694.51793.99013.9901
O21.43001.43532.39952.03932.10272.10272.09132.09133.36402.65432.6543
C32.35411.43531.53453.28772.63802.63801.11151.11152.17812.17552.1755
C43.69092.39951.53454.43864.04264.04262.19202.19201.10511.10311.1031
H51.10082.03933.28774.43861.80511.80513.60093.60095.37674.59224.5922
H61.10942.10272.63804.04261.80511.80402.99852.39774.73764.22504.5918
H71.10942.10272.63804.04261.80511.80402.39772.99854.73764.59184.2250
H82.60692.09131.11152.19203.60092.99852.39771.79722.53273.10402.5323
H92.60692.09131.11152.19203.60092.39772.99851.79722.53272.53233.1040
H104.51793.36402.17811.10515.37674.73764.73762.53272.53271.79681.7968
H113.99012.65432.17551.10314.59224.22504.59183.10402.53231.79681.7929
H123.99012.65432.17551.10314.59224.59184.22502.53233.10401.79681.7929

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 110.492 O2 C1 H5 106.649
O2 C1 H6 111.171 O2 C1 H7 111.171
O2 C3 C4 107.746 O2 C3 H8 109.744
O2 C3 H9 109.744 C3 C4 H10 110.149
C3 C4 H11 110.058 C3 C4 H12 110.058
C4 C3 H8 110.856 C4 C3 H9 110.856
H5 C1 H6 109.512 H5 C1 H7 109.512
H6 C1 H7 108.791 H8 C3 H9 107.894
H10 C4 H11 108.915 H10 C4 H12 108.915
H11 C4 H12 108.711
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability