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All results from a given calculation for C4H10O (Ethanol, 1,1-dimethyl-)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at QCISD/3-21G
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-231.416604
Energy at 298.15K-231.427854
HF Energy-230.870458
Nuclear repulsion energy196.812818
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/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 3448 3341 4.58      
2 A 3113 3017 47.67      
3 A 3111 3016 31.74      
4 A 3105 3010 0.69      
5 A 3105 3009 1.42      
6 A 3085 2990 43.54      
7 A 3079 2984 4.12      
8 A 3037 2943 7.21      
9 A 3020 2927 26.57      
10 A 3015 2922 11.27      
11 A 1591 1542 10.54      
12 A 1578 1530 7.31      
13 A 1575 1526 3.30      
14 A 1566 1517 0.16      
15 A 1562 1514 0.00      
16 A 1554 1506 0.07      
17 A 1483 1438 2.17      
18 A 1458 1413 12.30      
19 A 1458 1413 14.73      
20 A 1415 1372 28.93      
21 A 1292 1253 25.93      
22 A 1287 1248 31.74      
23 A 1194 1157 50.87      
24 A 1088 1055 1.75      
25 A 1070 1037 11.73      
26 A 1009 977 0.01      
27 A 940 911 0.34      
28 A 928 900 27.59      
29 A 927 899 0.46      
30 A 721 698 1.97      
31 A 443 429 10.20      
32 A 439 426 10.52      
33 A 398 386 0.55      
34 A 346 336 107.09      
35 A 342 331 2.79      
36 A 336 326 22.23      
37 A 274 266 0.06      
38 A 266 258 0.31      
39 A 225 218 1.85      

Unscaled Zero Point Vibrational Energy (zpe) 29941.2 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 29019.0 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/3-21G
ABC
0.15295 0.15173 0.14684

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 0.000 -0.000
H2 -1.773 -1.271 -0.152
H3 -0.222 -2.159 -0.071
H4 -0.710 -1.333 -1.587
C5 -0.724 -1.276 -0.489
H6 1.975 -0.893 -0.022
H7 1.976 0.891 -0.022
H8 1.565 -0.001 -1.525
C9 1.482 -0.001 -0.430
H10 -0.220 2.159 -0.071
H11 -1.772 1.273 -0.152
H12 -0.709 1.333 -1.587
C13 -0.723 1.277 -0.489
H14 -0.872 0.000 1.808
O15 0.068 0.000 1.479

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 H12 C13 H14 O15
C12.18762.17192.19061.54722.16662.16662.18411.54152.17192.18762.19061.54722.00841.4812
H22.18761.78881.78621.10183.76914.32953.82623.50473.76632.54373.15792.77642.50382.7683
H32.17191.78881.79421.09832.53653.76013.15712.77334.31863.76633.83823.49752.93562.6739
H42.19061.78621.79421.09893.13923.82242.63732.81413.83823.15782.66592.83093.65073.4325
C51.54721.10181.09831.09892.76593.49362.81762.54873.49752.77652.83102.55322.63252.4761
H62.16663.76912.53653.13922.76591.78411.79561.09813.76014.32953.82243.49363.50072.5864
H72.16664.32953.76013.82243.49361.78411.79561.09812.53653.76913.13912.76593.50072.5864
H82.18413.82623.15712.63732.81761.79561.79561.09863.15713.82622.63732.81764.12933.3569
C91.54153.50472.77332.81412.54871.09811.09811.09862.77333.50472.81402.54863.24802.3758
H102.17193.76634.31863.83823.49753.76012.53653.15712.77331.78881.79411.09832.93562.6739
H112.18762.54373.76633.15782.77654.32953.76913.82623.50471.78881.78621.10182.50382.7684
H122.19063.15793.83822.66592.83103.82243.13912.63732.81401.79411.78621.09893.65073.4325
C131.54722.77643.49752.83092.55323.49362.76592.81762.54861.09831.10181.09892.63252.4761
H142.00842.50382.93563.65072.63253.50073.50074.12933.24802.93562.50383.65072.63250.9958
O151.48122.76832.67393.43252.47612.58642.58643.35692.37582.67392.76843.43252.47610.9958

picture of Ethanol, 1,1-dimethyl- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H2 110.209 C1 C5 H3 109.189
C1 C5 H4 110.618 C1 C9 H6 109.173
C1 C9 H7 109.172 C1 C9 H8 110.514
C1 C13 H10 109.188 C1 C13 H11 110.212
C1 C13 H12 110.621 C1 O15 H14 106.704
H2 C5 H3 108.792 H2 C5 H4 108.517
H3 C5 H4 109.487 C5 C1 C9 111.208
C5 C1 C13 111.202 C5 C1 O15 109.676
H6 C9 H7 108.652 H6 C9 H8 109.648
H7 C9 H8 109.651 C9 C1 C13 111.208
C9 C1 O15 103.601 H10 C13 H11 108.788
H10 C13 H12 109.484 H11 C13 H12 108.517
C13 C1 O15 109.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability