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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-193.019564
Energy at 298.15K-193.028640
HF Energy-193.019564
Nuclear repulsion energy133.081519
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 HF/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' 3318 2996 34.97      
2 A' 3272 2954 40.87      
3 A' 3201 2890 23.51      
4 A' 3175 2866 77.47      
5 A' 3160 2853 30.16      
6 A' 1694 1529 1.23      
7 A' 1667 1505 7.03      
8 A' 1658 1497 6.34      
9 A' 1630 1471 0.08      
10 A' 1582 1428 16.63      
11 A' 1558 1407 24.91      
12 A' 1342 1212 48.98      
13 A' 1240 1120 105.28      
14 A' 1218 1100 51.57      
15 A' 1101 994 12.27      
16 A' 917 828 16.89      
17 A' 486 439 1.35      
18 A' 295 266 4.96      
19 A" 3290 2971 43.83      
20 A" 3229 2916 82.18      
21 A" 3195 2885 59.09      
22 A" 1656 1495 7.54      
23 A" 1642 1482 4.74      
24 A" 1426 1288 0.77      
25 A" 1308 1181 15.29      
26 A" 1269 1146 0.29      
27 A" 915 826 0.26      
28 A" 266 240 3.42      
29 A" 201 181 4.09      
30 A" 111 100 6.60      

Unscaled Zero Point Vibrational Energy (zpe) 25509.4 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 23032.5 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 HF/6-31G
ABC
0.95432 0.13578 0.12726

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.257 1.351 0.000
O2 0.000 0.684 0.000
C3 0.036 -0.744 0.000
C4 -1.394 -1.241 0.000
H5 1.049 2.409 0.000
H6 1.835 1.099 0.883
H7 1.835 1.099 -0.883
H8 0.572 -1.096 -0.878
H9 0.572 -1.096 0.878
H10 -1.425 -2.325 0.000
H11 -1.915 -0.879 0.877
H12 -1.915 -0.879 -0.877

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.42302.42543.70761.07771.08541.08542.68912.68914.55033.97553.9755
O21.42301.42902.37662.01872.07832.07832.06572.06573.32922.62292.6229
C32.42541.42901.51393.31192.72272.72271.08701.08702.15232.14362.1436
C43.70762.37661.51394.39184.08414.08412.15772.15771.08441.08221.0822
H51.07772.01873.31194.39181.76471.76473.64473.64475.34114.51274.5127
H61.08542.07832.72274.08411.76471.76643.08492.53264.80914.23994.5905
H71.08542.07832.72274.08411.76471.76642.53263.08494.80914.59054.2399
H82.68912.06571.08702.15773.64473.08492.53261.75652.50333.05142.4963
H92.68912.06571.08702.15773.64472.53263.08491.75652.50332.49633.0514
H104.55033.32922.15231.08445.34114.80914.80912.50332.50331.76051.7605
H113.97552.62292.14361.08224.51274.23994.59053.05142.49631.76051.7531
H123.97552.62292.14361.08224.51274.59054.23992.49633.05141.76051.7531

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 116.515 O2 C1 H5 106.847
O2 C1 H6 111.184 O2 C1 H7 111.184
O2 C3 C4 107.688 O2 C3 H8 109.628
O2 C3 H9 109.628 C3 C4 H10 110.771
C3 C4 H11 110.211 C3 C4 H12 110.211
C4 C3 H8 111.050 C4 C3 H9 111.050
H5 C1 H6 109.334 H5 C1 H7 109.334
H6 C1 H7 108.916 H8 C3 H9 107.793
H10 C4 H11 108.697 H10 C4 H12 108.697
H11 C4 H12 108.190
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.107      
2 O -0.706      
3 C 0.044      
4 C -0.451      
5 H 0.178      
6 H 0.138      
7 H 0.138      
8 H 0.139      
9 H 0.139      
10 H 0.144      
11 H 0.172      
12 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.558 -0.910 0.000 1.804
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.267 2.421 0.000
y 2.421 -25.246 0.000
z 0.000 0.000 -26.782
Traceless
 xyz
x 0.747 2.421 0.000
y 2.421 0.779 0.000
z 0.000 0.000 -1.526
Polar
3z2-r2-3.052
x2-y2-0.021
xy2.421
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.216 0.599 0.000
y 0.599 5.613 0.000
z 0.000 0.000 4.725


<r2> (average value of r2) Å2
<r2> 104.566
(<r2>)1/2 10.226