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

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-190.913265
Energy at 298.15K-190.922089
HF Energy-190.713516
Nuclear repulsion energy130.619109
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 MP2/STO-3G
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' 3561 3105 1.76      
2 A' 3516 3066 3.33      
3 A' 3380 2947 1.37      
4 A' 3324 2898 12.90      
5 A' 3308 2885 13.89      
6 A' 1744 1521 0.83      
7 A' 1731 1509 2.30      
8 A' 1723 1502 2.65      
9 A' 1646 1435 7.01      
10 A' 1617 1410 4.50      
11 A' 1553 1354 45.59      
12 A' 1344 1172 7.29      
13 A' 1273 1110 7.00      
14 A' 1201 1047 2.23      
15 A' 1134 988 1.67      
16 A' 962 838 0.17      
17 A' 504 439 0.25      
18 A' 305 266 1.19      
19 A" 3565 3108 2.04      
20 A" 3462 3019 12.56      
21 A" 3429 2990 19.17      
22 A" 1721 1501 0.84      
23 A" 1707 1488 1.75      
24 A" 1417 1235 0.26      
25 A" 1267 1104 10.64      
26 A" 1228 1071 1.35      
27 A" 898 783 0.23      
28 A" 264 230 1.82      
29 A" 201 175 0.00      
30 A" 128 111 1.74      

Unscaled Zero Point Vibrational Energy (zpe) 26555.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 23153.5 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 MP2/STO-3G
ABC
0.87565 0.13414 0.12470

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.374 1.212 0.000
O2 -0.017 0.768 0.000
C3 0.000 -0.697 0.000
C4 -1.479 -1.192 0.000
H5 1.362 2.321 0.000
H6 1.931 0.865 0.899
H7 1.931 0.865 -0.899
H8 0.532 -1.094 -0.897
H9 0.532 -1.094 0.897
H10 -1.509 -2.295 0.000
H11 -2.008 -0.824 0.895
H12 -2.008 -0.824 -0.895

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.45972.35223.73131.10851.11351.11352.61402.61404.54054.04774.0477
O21.45971.46452.44552.07722.14752.14752.13812.13813.40712.70182.7018
C32.35221.46451.56003.31112.64162.64161.11651.11652.19842.20192.2019
C43.73132.44551.56004.51864.08334.08332.20492.20491.10321.10281.1028
H51.10852.07723.31114.51861.80311.80313.62713.62715.43654.69584.6958
H61.11352.14752.64164.08331.80311.79863.00392.40734.75754.28584.6464
H71.11352.14752.64164.08331.80311.79862.40733.00394.75754.64644.2858
H82.61402.13811.11652.20493.62713.00392.40731.79492.53323.12062.5543
H92.61402.13811.11652.20493.62712.40733.00391.79492.53322.55433.1206
H104.54053.40712.19841.10325.43654.75754.75752.53322.53321.79261.7926
H114.04772.70182.20191.10284.69584.28584.64643.12062.55431.79261.7904
H124.04772.70182.20191.10284.69584.64644.28582.55433.12061.79261.7904

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 107.102 O2 C1 H5 107.160
O2 C1 H6 112.436 O2 C1 H7 112.436
O2 C3 C4 107.874 O2 C3 H8 111.161
O2 C3 H9 111.161 C3 C4 H10 110.087
C3 C4 H11 110.386 C3 C4 H12 110.386
C4 C3 H8 109.826 C4 C3 H9 109.826
H5 C1 H6 108.476 H5 C1 H7 108.476
H6 C1 H7 107.729 H8 C3 H9 106.997
H10 C4 H11 108.702 H10 C4 H12 108.702
H11 C4 H12 108.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability