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All results from a given calculation for C5H6O (3-Methylfuran)

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-266.777245
Energy at 298.15K-266.783789
HF Energy-266.167077
Nuclear repulsion energy217.127442
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' 3283 3182 1.06      
2 A' 3270 3169 0.73      
3 A' 3232 3132 1.31      
4 A' 3088 2993 16.23      
5 A' 3024 2931 21.65      
6 A' 1629 1579 1.29      
7 A' 1572 1524 5.92      
8 A' 1515 1468 8.87      
9 A' 1481 1435 1.20      
10 A' 1379 1336 9.53      
11 A' 1278 1239 0.08      
12 A' 1244 1205 0.75      
13 A' 1170 1134 16.05      
14 A' 1059 1026 8.24      
15 A' 1047 1014 5.52      
16 A' 1003 972 12.69      
17 A' 961 931 1.06      
18 A' 867 840 32.96      
19 A' 622 603 2.96      
20 A' 322 313 0.83      
21 A" 3079 2984 19.49      
22 A" 1566 1518 5.71      
23 A" 1113 1078 2.92      
24 A" 840 814 3.48      
25 A" 771 747 54.70      
26 A" 740 717 10.99      
27 A" 604 585 0.11      
28 A" 591 573 28.38      
29 A" 253 245 2.65      
30 A" 120 117 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21360.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 20702.2 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 QCISD/3-21G
ABC
0.28467 0.10914 0.08009

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.746 -1.483 0.000
C2 -1.110 -0.109 0.000
C3 0.671 -1.495 0.000
C4 0.000 0.686 0.000
C5 1.157 -0.220 0.000
C6 0.052 2.204 0.000
H7 -2.171 0.094 0.000
H8 1.130 -2.473 0.000
H9 2.200 0.076 0.000
H10 -0.965 2.621 0.000
H11 0.577 2.576 0.892
H12 0.577 2.576 -0.892

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.42111.41772.29432.28463.77192.12532.12123.33294.11034.36164.3616
C21.42112.25681.36562.26992.58811.08063.25613.31462.73453.29423.2942
C31.41772.25682.28261.36473.75023.25651.07982.19174.43004.16894.1689
C42.29431.36562.28261.47011.51792.25053.35522.28292.16242.16772.1677
C52.28462.26991.36471.47012.66383.34332.25291.08343.54682.99172.9917
C63.77192.58813.75021.51792.66383.06454.79893.02341.09971.10011.1001
H72.12531.08063.25652.25053.34333.06454.18144.37082.80033.80903.8090
H82.12123.25611.07983.35522.25294.79894.18142.76395.50825.15675.1567
H93.33293.31462.19172.28291.08343.02344.37082.76394.06193.11133.1113
H104.11032.73454.43002.16243.54681.09972.80035.50824.06191.78231.7823
H114.36163.29424.16892.16772.99171.10013.80905.15673.11131.78231.7837
H124.36163.29424.16892.16772.99171.10013.80905.15673.11131.78231.7837

picture of 3-Methylfuran state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.820 O1 C2 H7 115.661
O1 C3 C5 110.376 O1 C3 H8 115.620
C2 O1 C3 105.311 C2 C4 C5 106.293
C2 C4 C6 127.593 C3 C5 C4 107.200
C3 C5 H9 126.705 C4 C2 H7 133.520
C4 C5 H9 126.095 C4 C6 H10 110.381
C4 C6 H11 110.779 C4 C6 H12 110.779
C5 C3 H8 134.004 C5 C4 C6 126.114
H10 C6 H11 108.239 H10 C6 H12 108.239
H11 C6 H12 108.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability