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

using model chemistry: QCISD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-268.567695
Energy at 298.15K-268.574310
HF Energy-267.672657
Nuclear repulsion energy220.706814
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/6-31G**
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' 3354 3158 1.89      
2 A' 3343 3147 2.04      
3 A' 3317 3122 2.08      
4 A' 3190 3003 21.27      
5 A' 3103 2921 31.10      
6 A' 1707 1607 0.43      
7 A' 1599 1505 18.23      
8 A' 1560 1469 4.11      
9 A' 1478 1391 0.77      
10 A' 1454 1369 3.98      
11 A' 1314 1237 3.10      
12 A' 1303 1226 1.35      
13 A' 1241 1168 24.15      
14 A' 1122 1056 6.57      
15 A' 1073 1010 33.58      
16 A' 1042 981 0.75      
17 A' 991 933 1.41      
18 A' 895 842 22.60      
19 A' 649 611 2.87      
20 A' 320 301 0.79      
21 A" 3174 2988 23.74      
22 A" 1541 1451 4.11      
23 A" 1093 1029 0.53      
24 A" 828 780 0.44      
25 A" 779 733 56.31      
26 A" 732 689 0.79      
27 A" 610 574 15.63      
28 A" 593 558 1.57      
29 A" 262 246 2.08      
30 A" 129 121 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21896.6 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 20613.5 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 QCISD/6-31G**
ABC
0.29634 0.11199 0.08252

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.704 -1.463 0.000
C2 -1.081 -0.145 0.000
C3 0.664 -1.466 0.000
C4 0.000 0.680 0.000
C5 1.148 -0.198 0.000
C6 0.007 2.179 0.000
H7 -2.142 0.038 0.000
H8 1.130 -2.436 0.000
H9 2.187 0.091 0.000
H10 -1.010 2.572 0.000
H11 0.518 2.571 0.881
H12 0.518 2.571 -0.881

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.37171.36782.25572.24323.71152.07882.07533.28204.04704.30664.3066
C21.37172.18881.35932.23002.56591.07623.18373.27612.71753.27243.2724
C31.36782.18882.24601.35743.70413.18331.07572.17794.37144.13464.1346
C42.25571.35932.24601.44541.49972.23563.31382.26452.14522.14992.1499
C52.24322.23001.35741.44542.63733.29852.23771.07773.51192.97342.9734
C63.71152.56593.70411.49972.63733.03334.74973.01871.09031.09151.0915
H72.07881.07623.18332.23563.29853.03334.10124.32862.77503.77723.7772
H82.07533.18371.07573.31382.23774.74974.10122.73905.44585.12035.1203
H93.28203.27612.17792.26451.07773.01874.32862.73904.04673.11603.1160
H104.04702.71754.37142.14523.51191.09032.77505.44584.04671.76441.7644
H114.30663.27244.13462.14992.97341.09153.77725.12033.11601.76441.7621
H124.30663.27244.13462.14992.97341.09153.77725.12033.11601.76441.7621

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 111.368 O1 C2 H7 115.729
O1 C3 C5 110.803 O1 C3 H8 115.759
C2 O1 C3 106.066 C2 C4 C5 105.285
C2 C4 C6 127.586 C3 C5 C4 106.477
C3 C5 H9 126.476 C4 C2 H7 132.903
C4 C5 H9 127.047 C4 C6 H10 110.848
C4 C6 H11 111.158 C4 C6 H12 111.158
C5 C3 H8 133.438 C5 C4 C6 127.129
H10 C6 H11 107.940 H10 C6 H12 107.940
H11 C6 H12 107.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability