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: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-193.177355
Energy at 298.15K-193.186306
HF Energy-193.177355
Nuclear repulsion energy132.066906
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 M06-2X/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' 3149 2983 12.93      
2 A' 3148 2982 19.29      
3 A' 3067 2906 7.80      
4 A' 3039 2878 39.93      
5 A' 3008 2849 28.97      
6 A' 1602 1517 1.73      
7 A' 1587 1503 8.86      
8 A' 1567 1484 7.95      
9 A' 1520 1440 0.56      
10 A' 1459 1382 16.48      
11 A' 1431 1355 22.06      
12 A' 1237 1171 34.58      
13 A' 1159 1097 87.28      
14 A' 1130 1070 7.27      
15 A' 1026 972 7.16      
16 A' 867 821 7.82      
17 A' 460 435 1.48      
18 A' 278 263 4.56      
19 A" 3141 2976 15.04      
20 A" 3085 2922 51.53      
21 A" 3040 2879 46.08      
22 A" 1562 1480 9.08      
23 A" 1548 1466 6.58      
24 A" 1324 1254 0.05      
25 A" 1214 1150 10.05      
26 A" 1174 1112 0.14      
27 A" 860 815 1.45      
28 A" 271 257 3.52      
29 A" 210 199 0.01      
30 A" 113 107 5.24      

Unscaled Zero Point Vibrational Energy (zpe) 24135.9 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 22861.5 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 M06-2X/3-21G*
ABC
0.90493 0.13639 0.12706

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.340 1.256 0.000
O2 0.000 0.713 0.000
C3 0.008 -0.738 0.000
C4 -1.458 -1.169 0.000
H5 1.236 2.342 0.000
H6 1.905 0.946 0.891
H7 1.905 0.946 -0.891
H8 0.530 -1.120 -0.890
H9 0.530 -1.120 0.890
H10 -1.545 -2.259 0.000
H11 -1.951 -0.765 0.886
H12 -1.951 -0.765 -0.886

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.44622.39813.70281.09061.09901.09902.66372.66374.54713.96293.9629
O21.44621.45062.38062.04462.11572.11572.10552.10553.34912.60322.6032
C32.39811.45061.52743.31532.68872.68871.10031.10032.17322.15032.1503
C43.70282.38061.52744.42524.07134.07132.17802.17801.09291.09231.0923
H51.09062.04463.31534.42521.78521.78523.64353.64355.37544.53814.5381
H61.09902.11572.68874.07131.78521.78163.05482.48244.79224.21874.5778
H71.09902.11572.68874.07131.78521.78162.48243.05484.79224.57784.2187
H82.66372.10551.10032.17803.64353.05482.48241.77922.52803.07202.5066
H92.66372.10551.10032.17803.64352.48243.05481.77922.52802.50663.0720
H104.54713.34912.17321.09295.37544.79224.79222.52802.52801.78421.7842
H113.96292.60322.15031.09234.53814.21874.57783.07202.50661.78421.7727
H123.96292.60322.15031.09234.53814.57784.21872.50663.07201.78421.7727

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 111.756 O2 C1 H5 106.564
O2 C1 H6 111.726 O2 C1 H7 111.726
O2 C3 C4 106.117 O2 C3 H8 110.505
O2 C3 H9 110.505 C3 C4 H10 110.982
C3 C4 H11 109.205 C3 C4 H12 109.205
C4 C3 H8 110.917 C4 C3 H9 110.917
H5 C1 H6 109.237 H5 C1 H7 109.237
H6 C1 H7 108.302 H8 C3 H9 107.905
H10 C4 H11 109.467 H10 C4 H12 109.467
H11 C4 H12 108.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.312      
2 O -0.518      
3 C -0.130      
4 C -0.587      
5 H 0.213      
6 H 0.177      
7 H 0.177      
8 H 0.180      
9 H 0.180      
10 H 0.191      
11 H 0.214      
12 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.252 -0.813 0.000 1.492
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.924 2.092 0.000
y 2.092 -25.309 0.000
z 0.000 0.000 -26.581
Traceless
 xyz
x 1.022 2.092 0.000
y 2.092 0.443 0.000
z 0.000 0.000 -1.465
Polar
3z2-r2-2.930
x2-y20.385
xy2.092
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.290 0.760 0.000
y 0.760 5.519 0.000
z 0.000 0.000 4.546


<r2> (average value of r2) Å2
<r2> 104.664
(<r2>)1/2 10.231