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: LSDA/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/aug-cc-pVTZ
 hartrees
Energy at 0K-193.400240
Energy at 298.15K-193.409144
HF Energy-193.400240
Nuclear repulsion energy134.688729
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 LSDA/aug-cc-pVTZ
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' 3065 3036 10.05      
2 A' 3053 3024 14.60      
3 A' 2977 2949 11.20      
4 A' 2883 2856 74.69      
5 A' 2862 2835 46.58      
6 A' 1449 1436 6.55      
7 A' 1427 1414 3.08      
8 A' 1420 1406 6.48      
9 A' 1397 1384 6.00      
10 A' 1357 1345 26.95      
11 A' 1320 1308 1.01      
12 A' 1206 1195 140.72      
13 A' 1172 1161 41.56      
14 A' 1086 1075 1.29      
15 A' 1049 1039 27.06      
16 A' 859 851 6.46      
17 A' 464 460 0.66      
18 A' 284 281 2.99      
19 A" 3059 3030 12.47      
20 A" 2928 2901 38.28      
21 A" 2883 2856 69.02      
22 A" 1403 1390 17.06      
23 A" 1400 1387 3.12      
24 A" 1240 1229 2.18      
25 A" 1147 1137 8.78      
26 A" 1118 1108 0.47      
27 A" 789 782 1.25      
28 A" 256 254 1.68      
29 A" 207 205 0.51      
30 A" 127 125 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 22943.7 cm-1
Scaled (by 0.9906) Zero Point Vibrational Energy (zpe) 22728.1 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 LSDA/aug-cc-pVTZ
ABC
0.94738 0.14219 0.13303

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.293 1.223 0.000
O2 -0.001 0.713 0.000
C3 0.000 -0.684 0.000
C4 -1.411 -1.173 0.000
H5 1.230 2.318 0.000
H6 1.858 0.895 0.896
H7 1.858 0.895 -0.896
H8 0.551 -1.056 -0.891
H9 0.551 -1.056 0.891
H10 -1.442 -2.271 0.000
H11 -1.944 -0.811 0.890
H12 -1.944 -0.811 -0.890

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.39082.30403.61301.09761.10891.10892.55702.55704.43683.92493.9249
O21.39081.39762.35532.02282.07172.07172.05682.05683.31392.62472.6247
C32.30401.39761.49363.24482.59782.59781.11181.11182.14402.14182.1418
C43.61302.35531.49364.37793.97093.97092.15842.15841.09831.09871.0987
H51.09762.02283.24484.37791.79561.79563.55573.55575.31044.54484.5448
H61.10892.07172.59783.97091.79561.79232.95102.34834.65984.16704.5336
H71.10892.07172.59783.97091.79561.79232.34832.95104.65984.53364.1670
H82.55702.05681.11182.15843.55572.95102.34831.78182.49823.07542.5074
H92.55702.05681.11182.15843.55572.34832.95101.78182.49822.50743.0754
H104.43683.31392.14401.09835.31044.65984.65982.49822.49821.78251.7825
H113.92492.62472.14181.09874.54484.16704.53363.07542.50741.78251.7796
H123.92492.62472.14181.09874.54484.53364.16702.50743.07541.78251.7796

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 111.441 O2 C1 H5 108.181
O2 C1 H6 111.452 O2 C1 H7 111.452
O2 C3 C4 109.061 O2 C3 H8 109.577
O2 C3 H9 109.577 C3 C4 H10 110.695
C3 C4 H11 110.500 C3 C4 H12 110.500
C4 C3 H8 111.035 C4 C3 H9 111.035
H5 C1 H6 108.937 H5 C1 H7 108.937
H6 C1 H7 107.828 H8 C3 H9 106.519
H10 C4 H11 108.451 H10 C4 H12 108.451
H11 C4 H12 108.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.615      
2 O -0.409      
3 C -0.021      
4 C -0.653      
5 H 0.237      
6 H 0.236      
7 H 0.236      
8 H 0.197      
9 H 0.197      
10 H 0.199      
11 H 0.198      
12 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.801 -0.692 0.000 1.058
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.361 1.833 0.000
y 1.833 -26.124 0.000
z 0.000 0.000 -27.042
Traceless
 xyz
x 0.222 1.833 0.000
y 1.833 0.577 0.000
z 0.000 0.000 -0.800
Polar
3z2-r2-1.599
x2-y2-0.237
xy1.833
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.804 0.850 0.000
y 0.850 7.601 0.000
z 0.000 0.000 6.601


<r2> (average value of r2) Å2
<r2> 101.765
(<r2>)1/2 10.088