return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/STO-3G
 hartrees
Energy at 0K-191.560122
Energy at 298.15K-191.568883
HF Energy-191.491434
Nuclear repulsion energy130.671418
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 B2PLYP=FULL/STO-3G
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' 3534 3534 1.08      
2 A' 3483 3483 2.54      
3 A' 3359 3359 0.89      
4 A' 3288 3288 13.79      
5 A' 3273 3273 15.04      
6 A' 1721 1721 1.04      
7 A' 1707 1707 2.29      
8 A' 1700 1700 4.65      
9 A' 1621 1621 5.01      
10 A' 1596 1596 4.22      
11 A' 1525 1525 41.64      
12 A' 1321 1321 7.89      
13 A' 1243 1243 12.42      
14 A' 1182 1182 3.11      
15 A' 1111 1111 2.11      
16 A' 944 944 0.19      
17 A' 495 495 0.25      
18 A' 301 301 1.40      
19 A" 3537 3537 1.33      
20 A" 3419 3419 12.17      
21 A" 3389 3389 19.40      
22 A" 1699 1699 1.82      
23 A" 1680 1680 3.02      
24 A" 1393 1393 0.07      
25 A" 1245 1245 9.43      
26 A" 1205 1205 0.63      
27 A" 889 889 0.83      
28 A" 258 258 1.79      
29 A" 196 196 0.00      
30 A" 125 125 1.89      

Unscaled Zero Point Vibrational Energy (zpe) 26218.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26218.1 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 B2PLYP=FULL/STO-3G
ABC
0.87598 0.13422 0.12474

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.373 1.217 0.000
O2 -0.019 0.767 0.000
C3 0.000 -0.701 0.000
C4 -1.475 -1.193 0.000
H5 1.353 2.322 0.000
H6 1.929 0.872 0.898
H7 1.929 0.872 -0.898
H8 0.531 -1.095 -0.896
H9 0.531 -1.095 0.896
H10 -1.506 -2.293 0.000
H11 -2.001 -0.825 0.893
H12 -2.001 -0.825 -0.893

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.46292.35893.73101.10541.11101.11102.61862.61864.53944.04284.0428
O21.46291.46802.44162.07442.14772.14772.13822.13823.40152.69362.6936
C32.35891.46801.55513.31252.64662.64661.11371.11372.19112.19422.1942
C43.73102.44161.55514.51204.08204.08202.19962.19961.09981.09941.0994
H51.10542.07443.31254.51201.79971.79973.62733.62735.42894.68494.6849
H61.11102.14772.64664.08201.79971.79593.00752.41374.75674.28054.6399
H71.11102.14772.64664.08201.79971.79592.41373.00754.75674.63994.2805
H82.61862.13821.11372.19963.62733.00752.41371.79242.52753.11182.5462
H92.61862.13821.11372.19963.62732.41373.00751.79242.52752.54623.1118
H104.53943.40152.19111.09985.42894.75674.75672.52752.52751.78781.7878
H114.04282.69362.19421.09944.68494.28054.63993.11182.54621.78781.7853
H124.04282.69362.19421.09944.68494.63994.28052.54623.11181.78781.7853

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 107.187 O2 C1 H5 106.922
O2 C1 H6 112.391 O2 C1 H7 112.391
O2 C3 C4 107.697 O2 C3 H8 111.086
O2 C3 H9 111.086 C3 C4 H10 110.060
C3 C4 H11 110.322 C3 C4 H12 110.322
C4 C3 H8 109.913 C4 C3 H9 109.913
H5 C1 H6 108.587 H5 C1 H7 108.587
H6 C1 H7 107.847 H8 C3 H9 107.157
H10 C4 H11 108.761 H10 C4 H12 108.761
H11 C4 H12 108.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability