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

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-193.793537
Energy at 298.15K-193.802536
HF Energy-193.117409
Nuclear repulsion energy133.166078
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 QCISD/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3155 3027 30.61      
2 A' 3154 3026 29.49      
3 A' 3067 2943 17.67      
4 A' 3004 2882 82.90      
5 A' 2986 2865 34.57      
6 A' 1538 1475 0.62      
7 A' 1509 1447 6.84      
8 A' 1502 1441 2.41      
9 A' 1483 1423 0.02      
10 A' 1443 1384 47.23      
11 A' 1397 1340 6.54      
12 A' 1254 1203 65.63      
13 A' 1196 1147 111.89      
14 A' 1123 1078 2.57      
15 A' 1065 1021 17.85      
16 A' 887 851 10.80      
17 A' 474 455 0.67      
18 A' 291 279 2.35      
19 A" 3160 3032 27.75      
20 A" 3056 2932 68.34      
21 A" 3022 2899 76.68      
22 A" 1486 1425 5.11      
23 A" 1481 1421 3.73      
24 A" 1301 1249 2.18      
25 A" 1209 1160 11.77      
26 A" 1173 1126 0.03      
27 A" 825 792 0.02      
28 A" 272 261 2.39      
29 A" 216 207 1.34      
30 A" 113 108 2.23      

Unscaled Zero Point Vibrational Energy (zpe) 23920.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 22949.3 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 QCISD/cc-pVDZ
ABC
0.92538 0.13877 0.12970

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.326 1.225 0.000
O2 0.010 0.716 0.000
C3 0.000 -0.700 0.000
C4 -1.450 -1.164 0.000
H5 1.256 2.325 0.000
H6 1.893 0.901 0.899
H7 1.893 0.901 -0.899
H8 0.535 -1.090 -0.895
H9 0.535 -1.090 0.895
H10 -1.504 -2.267 0.000
H11 -1.972 -0.783 0.895
H12 -1.972 -0.783 -0.895

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.41052.33683.66191.10231.11151.11152.60462.60464.49453.96283.9628
O21.41051.41552.38022.03522.09482.09482.08262.08263.34532.64102.6410
C32.33681.41551.52243.27512.63712.63711.11331.11332.17232.16702.1670
C43.66192.38021.52244.41534.03084.03082.17862.17861.10461.10401.1040
H51.10232.03523.27514.41531.80051.80053.60313.60315.35784.56934.5693
H61.11152.09482.63714.03081.80051.79843.00442.40994.73134.21564.5816
H71.11152.09482.63714.03081.80051.79842.40993.00444.73134.58164.2156
H82.60462.08261.11332.17863.60313.00442.40991.78982.51883.09552.5256
H92.60462.08261.11332.17863.60312.40993.00441.78982.51882.52563.0955
H104.49453.34532.17231.10465.35784.73134.73132.51882.51881.79551.7955
H113.96282.64102.16701.10404.56934.21564.58163.09552.52561.79551.7901
H123.96282.64102.16701.10404.56934.58164.21562.52563.09551.79551.7901

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 111.563 O2 C1 H5 107.543
O2 C1 H6 111.775 O2 C1 H7 111.775
O2 C3 C4 108.166 O2 C3 H8 110.309
O2 C3 H9 110.309 C3 C4 H10 110.558
C3 C4 H11 110.175 C3 C4 H12 110.175
C4 C3 H8 110.537 C4 C3 H9 110.537
H5 C1 H6 108.839 H5 C1 H7 108.839
H6 C1 H7 108.000 H8 C3 H9 106.994
H10 C4 H11 108.771 H10 C4 H12 108.771
H11 C4 H12 108.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability