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: B3LYPultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/6-311G*
 hartrees
Energy at 0K-194.391693
Energy at 298.15K-194.400664
HF Energy-194.391693
Nuclear repulsion energy133.447276
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 B3LYPultrafine/6-311G*
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' 3115 3010 38.08      
2 A' 3105 3001 36.80      
3 A' 3040 2937 21.53      
4 A' 2969 2869 101.98      
5 A' 2950 2851 39.56      
6 A' 1549 1497 2.10      
7 A' 1525 1473 4.18      
8 A' 1517 1466 8.64      
9 A' 1494 1443 0.04      
10 A' 1441 1392 37.15      
11 A' 1411 1364 1.64      
12 A' 1245 1203 35.98      
13 A' 1154 1115 156.55      
14 A' 1125 1087 5.99      
15 A' 1030 995 16.86      
16 A' 870 841 14.01      
17 A' 468 452 0.53      
18 A' 289 279 2.65      
19 A" 3110 3005 40.16      
20 A" 3005 2903 82.87      
21 A" 2973 2873 83.68      
22 A" 1503 1452 10.41      
23 A" 1500 1450 4.12      
24 A" 1312 1268 1.92      
25 A" 1207 1167 10.33      
26 A" 1176 1136 0.07      
27 A" 831 803 0.17      
28 A" 269 260 2.40      
29 A" 216 208 1.28      
30 A" 116 112 2.84      

Unscaled Zero Point Vibrational Energy (zpe) 23756.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 22956.2 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 B3LYPultrafine/6-311G*
ABC
0.94374 0.13811 0.12928

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.318 1.245 0.000
O2 0.015 0.709 0.000
C3 0.000 -0.707 0.000
C4 -1.443 -1.175 0.000
H5 1.223 2.331 0.000
H6 1.885 0.938 0.892
H7 1.885 0.938 -0.892
H8 0.532 -1.090 -0.886
H9 0.532 -1.090 0.886
H10 -1.497 -2.267 0.000
H11 -1.966 -0.803 0.884
H12 -1.966 -0.803 -0.884

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.40932.35573.67161.09051.10021.10022.61842.61844.50093.97013.9701
O21.40931.41612.38202.02242.08412.08412.07072.07073.33762.64412.6441
C32.35571.41611.51703.27522.65592.65591.10211.10212.16162.15772.1577
C43.67162.38201.51704.40424.04144.04142.16642.16641.09351.09241.0924
H51.09052.02243.27524.40421.78211.78213.60103.60105.34194.55744.5574
H61.10022.08412.65594.04141.78211.78323.01702.43764.74334.22584.5838
H71.10022.08412.65594.04141.78211.78322.43763.01704.74334.58384.2258
H82.61842.07071.10212.16643.60103.01702.43761.77242.50713.07502.5142
H92.61842.07071.10212.16643.60102.43763.01701.77242.50712.51423.0750
H104.50093.33762.16161.09355.34194.74334.74332.50712.50711.77351.7735
H113.97012.64412.15771.09244.55744.22584.58383.07502.51421.77351.7687
H123.97012.64412.15771.09244.55744.58384.22582.51423.07501.77351.7687

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 112.976 O2 C1 H5 107.321
O2 C1 H6 111.710 O2 C1 H7 111.710
O2 C3 C4 108.555 O2 C3 H8 110.002
O2 C3 H9 110.002 C3 C4 H10 110.752
C3 C4 H11 110.506 C3 C4 H12 110.506
C4 C3 H8 110.619 C4 C3 H9 110.619
H5 C1 H6 108.879 H5 C1 H7 108.879
H6 C1 H7 108.273 H8 C3 H9 107.042
H10 C4 H11 108.449 H10 C4 H12 108.449
H11 C4 H12 108.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 O -0.333      
3 C -0.185      
4 C -0.624      
5 H 0.212      
6 H 0.183      
7 H 0.183      
8 H 0.176      
9 H 0.176      
10 H 0.201      
11 H 0.213      
12 H 0.213      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.985 -0.673 0.000 1.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.986 1.739 0.000
y 1.739 -25.834 0.000
z 0.000 0.000 -26.859
Traceless
 xyz
x 0.361 1.739 0.000
y 1.739 0.588 0.000
z 0.000 0.000 -0.949
Polar
3z2-r2-1.898
x2-y2-0.151
xy1.739
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.245 0.750 0.000
y 0.750 6.247 0.000
z 0.000 0.000 5.388


<r2> (average value of r2) Å2
<r2> 103.764
(<r2>)1/2 10.186