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All results from a given calculation for C5H6O (2-methylfuran)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (C1)

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-268.876653
Energy at 298.15K-268.884026
HF Energy-267.664492
Nuclear repulsion energy224.247239
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 CBS-Q
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' 3464 3464 3.47      
2 A' 3430 3430 2.93      
3 A' 3417 3417 8.61      
4 A' 3287 3287 20.56      
5 A' 3194 3194 33.34      
6 A' 1810 1810 18.19      
7 A' 1713 1713 27.91      
8 A' 1627 1627 5.53      
9 A' 1560 1560 7.34      
10 A' 1535 1535 1.85      
11 A' 1369 1369 9.90      
12 A' 1335 1335 12.90      
13 A' 1271 1271 20.61      
14 A' 1210 1210 17.89      
15 A' 1103 1103 11.33      
16 A' 1077 1077 6.60      
17 A' 1022 1022 30.00      
18 A' 971 971 3.79      
19 A' 697 697 1.27      
20 A' 356 356 2.25      
21 A" 3254 3254 24.36      
22 A" 1610 1610 4.94      
23 A" 1167 1167 1.84      
24 A" 985 985 0.13      
25 A" 907 907 14.90      
26 A" 847 847 52.20      
27 A" 697 697 4.03      
28 A" 658 658 9.86      
29 A" 266 266 6.16      
30 A" 155 155 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 22997.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 22997.0 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 CBS-Q
ABC
0.29096 0.11788 0.08524

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.018 -0.247 0.000
C2 0.000 0.635 0.000
C3 0.486 -1.484 0.000
C4 -1.175 -0.017 0.000
C5 -0.852 -1.424 0.000
C6 0.368 2.080 0.000
H7 1.186 -2.295 0.000
H8 -2.151 0.429 0.000
H9 -1.532 -2.254 0.000
H10 -0.528 2.693 0.000
H11 0.959 2.331 0.879
H12 0.959 2.331 -0.879

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.34681.34612.20482.20922.41652.05433.24053.24493.32182.72472.7247
C21.34682.17381.34362.22851.49173.16052.16123.27022.12492.13752.1375
C31.34612.17382.21641.33903.56621.07113.25822.16024.29833.94343.9434
C42.20481.34362.21641.44462.60373.28091.07332.26592.78603.29213.2921
C52.20922.22851.33901.44463.71112.21572.26391.07304.13044.26084.2608
C62.41651.49173.56622.60373.71114.45083.01254.73291.08561.08821.0882
H72.05433.16051.07113.28092.21574.45084.30782.71845.27414.71404.7140
H83.24052.16123.25821.07332.26393.01254.30782.75392.78603.75013.7501
H93.24493.27022.16022.26591.07304.73292.71842.75395.04835.29175.2917
H103.32182.12494.29832.78604.13041.08565.27412.78605.04831.76451.7645
H112.72472.13753.94343.29214.26081.08824.71403.75015.29171.76451.7579
H122.72472.13753.94343.29214.26081.08824.71403.75015.29171.76451.7579

picture of 2-methylfuran state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.075 O1 C2 C6 116.624
O1 C3 C5 110.720 O1 C3 H7 115.935
C2 O1 C3 107.656 C2 C4 C5 106.070
C2 C4 H8 126.452 C2 C6 H10 110.072
C2 C6 H11 110.933 C2 C6 H12 110.933
C3 C5 C6 73.351 C3 C5 H9 126.813
C4 C2 C6 133.301 C4 C5 H9 127.708
C5 C3 H7 133.345 C5 C4 H8 127.478
H10 C6 H11 108.534 H10 C6 H12 108.534
H11 C6 H12 107.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability