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

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-192.437745
Energy at 298.15K-192.446699
HF Energy-192.034929
Nuclear repulsion energy131.120599
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=FULL/3-21G*
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' 3178 3013 19.69      
2 A' 3174 3009 27.82      
3 A' 3102 2941 11.27      
4 A' 3037 2879 55.11      
5 A' 3031 2873 23.28      
6 A' 1634 1549 0.37      
7 A' 1615 1531 6.23      
8 A' 1605 1522 7.32      
9 A' 1541 1461 2.26      
10 A' 1491 1414 9.46      
11 A' 1455 1379 36.28      
12 A' 1237 1172 18.19      
13 A' 1142 1083 2.85      
14 A' 1105 1047 89.43      
15 A' 999 947 5.13      
16 A' 838 795 9.43      
17 A' 454 431 1.33      
18 A' 276 262 4.18      
19 A" 3189 3023 21.60      
20 A" 3083 2923 61.08      
21 A" 3064 2904 60.03      
22 A" 1590 1507 5.84      
23 A" 1589 1506 3.47      
24 A" 1350 1280 0.01      
25 A" 1230 1166 7.96      
26 A" 1184 1122 0.01      
27 A" 878 833 0.73      
28 A" 269 255 2.95      
29 A" 218 206 0.84      
30 A" 115 109 4.51      

Unscaled Zero Point Vibrational Energy (zpe) 24335.8 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 23070.3 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=FULL/3-21G*
ABC
0.88969 0.13444 0.12508

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.369 1.250 0.000
O2 0.000 0.724 0.000
C3 -0.001 -0.746 0.000
C4 -1.478 -1.163 0.000
H5 1.274 2.337 0.000
H6 1.929 0.932 0.891
H7 1.929 0.932 -0.891
H8 0.517 -1.134 -0.890
H9 0.517 -1.134 0.890
H10 -1.572 -2.254 0.000
H11 -1.968 -0.757 0.888
H12 -1.968 -0.757 -0.888

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.46672.42083.73201.09141.09931.09932.68372.68374.57453.99413.9941
O21.46671.46972.39702.05552.13482.13482.12422.12423.36722.61812.6181
C32.42081.46971.53453.33612.70802.70801.10041.10042.17762.15812.1581
C43.73202.39701.53454.45254.09744.09742.18422.18421.09441.09271.0927
H51.09142.05553.33614.45251.78811.78813.66283.66285.40144.56854.5685
H61.09932.13482.70804.09741.78811.78263.07162.50264.81664.24704.6046
H71.09932.13482.70804.09741.78811.78262.50263.07164.81664.60464.2470
H82.68372.12421.10042.18423.66283.07162.50261.77922.53153.07852.5136
H92.68372.12421.10042.18423.66282.50263.07161.77922.53152.51363.0785
H104.57453.36722.17761.09445.40144.81664.81662.53152.53151.78481.7848
H113.99412.61812.15811.09274.56854.24704.60463.07852.51361.78481.7756
H123.99412.61812.15811.09274.56854.60464.24702.51363.07851.78481.7756

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 111.053 O2 C1 H5 106.004
O2 C1 H6 111.805 O2 C1 H7 111.805
O2 C3 C4 105.833 O2 C3 H8 110.661
O2 C3 H9 110.661 C3 C4 H10 110.745
C3 C4 H11 109.309 C3 C4 H12 109.309
C4 C3 H8 110.910 C4 C3 H9 110.910
H5 C1 H6 109.414 H5 C1 H7 109.414
H6 C1 H7 108.352 H8 C3 H9 107.893
H10 C4 H11 109.382 H10 C4 H12 109.382
H11 C4 H12 108.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability