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/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 B2PLYP/6-31G
 hartrees
Energy at 0K-193.986389
Energy at 298.15K-193.995293
HF Energy-193.852176
Nuclear repulsion energy131.556126
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/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3185 3185 27.03      
2 A' 3155 3155 29.65      
3 A' 3076 3076 18.10      
4 A' 3023 3023 69.30      
5 A' 3007 3007 36.62      
6 A' 1589 1589 0.78      
7 A' 1567 1567 1.52      
8 A' 1562 1562 12.67      
9 A' 1514 1514 0.34      
10 A' 1477 1477 13.25      
11 A' 1444 1444 25.89      
12 A' 1232 1232 19.74      
13 A' 1142 1142 7.10      
14 A' 1105 1105 103.82      
15 A' 1025 1025 17.93      
16 A' 834 834 13.49      
17 A' 460 460 1.02      
18 A' 280 280 4.23      
19 A" 3169 3169 31.57      
20 A" 3081 3081 70.34      
21 A" 3044 3044 68.37      
22 A" 1548 1548 6.47      
23 A" 1546 1546 6.10      
24 A" 1324 1324 0.07      
25 A" 1214 1214 10.03      
26 A" 1170 1170 0.06      
27 A" 861 861 0.72      
28 A" 257 257 2.71      
29 A" 203 203 1.85      
30 A" 110 110 5.15      

Unscaled Zero Point Vibrational Energy (zpe) 24100.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24100.4 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/6-31G
ABC
0.91468 0.13406 0.12524

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.331 1.294 0.000
O2 0.000 0.714 0.000
C3 0.006 -0.744 0.000
C4 -1.444 -1.202 0.000
H5 1.191 2.374 0.000
H6 1.897 0.996 0.894
H7 1.897 0.996 -0.894
H8 0.541 -1.113 -0.889
H9 0.541 -1.113 0.889
H10 -1.504 -2.295 0.000
H11 -1.960 -0.822 0.886
H12 -1.960 -0.822 -0.886

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.45182.43083.73231.08981.09901.09902.68472.68474.57364.01124.0112
O21.45181.45842.39922.04352.11622.11622.10262.10263.36422.64292.6429
C32.43081.45841.52103.33642.72132.72131.10111.10112.16472.15782.1578
C43.73232.39921.52104.44244.09854.09852.17692.17691.09531.09341.0934
H51.08982.04353.33644.44241.78791.78793.65743.65745.39174.57494.5749
H61.09902.11622.72134.09851.78791.78723.07722.50814.81694.26414.6207
H71.09902.11622.72134.09851.78791.78722.50813.07724.81694.62074.2641
H82.68472.10261.10112.17693.65743.07722.50811.77852.52363.08052.5173
H92.68472.10261.10112.17693.65742.50813.07721.77852.52362.51733.0805
H104.57363.36422.16471.09535.39174.81694.81692.52362.52361.77901.7790
H114.01122.64292.15781.09344.57494.26414.62073.08052.51731.77901.7727
H124.01122.64292.15781.09344.57494.62074.26412.51733.08051.77901.7727

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 113.293 O2 C1 H5 106.162
O2 C1 H6 111.374 O2 C1 H7 111.374
O2 C3 C4 107.256 O2 C3 H8 109.687
O2 C3 H9 109.687 C3 C4 H10 110.612
C3 C4 H11 110.182 C3 C4 H12 110.182
C4 C3 H8 111.241 C4 C3 H9 111.241
H5 C1 H6 109.539 H5 C1 H7 109.539
H6 C1 H7 108.810 H8 C3 H9 107.727
H10 C4 H11 108.746 H10 C4 H12 108.746
H11 C4 H12 108.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.144      
2 O -0.546      
3 C 0.003      
4 C -0.411      
5 H 0.160      
6 H 0.127      
7 H 0.127      
8 H 0.122      
9 H 0.122      
10 H 0.131      
11 H 0.155      
12 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.328 -0.894 0.000 1.601
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.199 2.296 0.000
y 2.296 -25.540 0.000
z 0.000 0.000 -26.841
Traceless
 xyz
x 0.992 2.296 0.000
y 2.296 0.480 0.000
z 0.000 0.000 -1.472
Polar
3z2-r2-2.944
x2-y20.341
xy2.296
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.620 0.748 0.000
y 0.748 5.909 0.000
z 0.000 0.000 4.870


<r2> (average value of r2) Å2
<r2> 106.025
(<r2>)1/2 10.297