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

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-36.722104
Energy at 298.15K-36.731158
HF Energy-36.722104
Nuclear repulsion energy77.913110
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/CEP-121G
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' 3288 3000 48.92      
2 A' 3243 2959 61.99      
3 A' 3157 2881 29.87      
4 A' 3131 2857 130.55      
5 A' 3120 2847 27.39      
6 A' 1668 1522 1.99      
7 A' 1641 1497 5.56      
8 A' 1637 1494 7.76      
9 A' 1601 1460 0.03      
10 A' 1562 1425 28.51      
11 A' 1532 1398 19.41      
12 A' 1331 1215 56.14      
13 A' 1238 1129 142.08      
14 A' 1205 1099 21.21      
15 A' 1098 1002 18.84      
16 A' 913 833 17.96      
17 A' 476 434 1.16      
18 A' 290 264 4.46      
19 A" 3261 2976 69.98      
20 A" 3201 2921 106.95      
21 A" 3172 2895 58.55      
22 A" 1628 1486 7.94      
23 A" 1620 1478 5.05      
24 A" 1401 1278 1.70      
25 A" 1290 1178 16.07      
26 A" 1253 1144 0.52      
27 A" 894 815 0.09      
28 A" 258 235 3.44      
29 A" 197 180 4.27      
30 A" 107 98 5.68      

Unscaled Zero Point Vibrational Energy (zpe) 25205.7 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 23000.2 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/CEP-121G
ABC
0.94582 0.13400 0.12562

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.275 1.348 0.000
O2 0.000 0.696 0.000
C3 0.031 -0.743 0.000
C4 -1.409 -1.247 0.000
H5 1.085 2.412 0.000
H6 1.849 1.085 0.887
H7 1.849 1.085 -0.887
H8 0.567 -1.094 -0.882
H9 0.567 -1.094 0.882
H10 -1.431 -2.334 0.000
H11 -1.934 -0.889 0.879
H12 -1.934 -0.889 -0.879

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.43212.43303.73371.08091.08941.08942.69182.69184.57014.00894.0089
O21.43211.43902.40032.03042.08762.08762.07472.07473.35122.65002.6500
C32.43301.43901.52623.32632.72612.72611.09051.09052.16152.15752.1575
C43.73372.40031.52624.42844.10394.10392.16972.16971.08741.08471.0847
H51.08092.03043.32634.42841.77061.77063.65273.65275.37224.55844.5584
H61.08942.08762.72614.10391.77061.77453.08592.52814.82074.26664.6178
H71.08942.08762.72614.10391.77061.77452.52813.08594.82074.61784.2666
H82.69182.07471.09052.16973.65273.08592.52811.76482.51213.06582.5091
H92.69182.07471.09052.16973.65272.52813.08591.76482.51212.50913.0658
H104.57013.35122.16151.08745.37224.82074.82072.51212.51211.76501.7650
H114.00892.65002.15751.08474.55844.26664.61783.06582.50911.76501.7585
H124.00892.65002.15751.08474.55844.61784.26662.50913.06581.76501.7585

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 115.860 O2 C1 H5 106.966
O2 C1 H6 111.044 O2 C1 H7 111.044
O2 C3 C4 108.056 O2 C3 H8 109.440
O2 C3 H9 109.440 C3 C4 H10 110.469
C3 C4 H11 110.308 C3 C4 H12 110.308
C4 C3 H8 110.931 C4 C3 H9 110.931
H5 C1 H6 109.339 H5 C1 H7 109.339
H6 C1 H7 109.065 H8 C3 H9 108.027
H10 C4 H11 108.697 H10 C4 H12 108.697
H11 C4 H12 108.303
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.216      
2 O -0.436      
3 C -0.002      
4 C -0.429      
5 H 0.166      
6 H 0.129      
7 H 0.129      
8 H 0.111      
9 H 0.111      
10 H 0.131      
11 H 0.153      
12 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.571 -0.959 0.000 1.841
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.436 2.449 0.000
y 2.449 -25.424 0.000
z 0.000 0.000 -26.650
Traceless
 xyz
x 0.601 2.449 0.000
y 2.449 0.619 0.000
z 0.000 0.000 -1.221
Polar
3z2-r2-2.441
x2-y2-0.012
xy2.449
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.583 0.563 0.000
y 0.563 5.921 0.000
z 0.000 0.000 5.070


<r2> (average value of r2) Å2
<r2> 89.650
(<r2>)1/2 9.468