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

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 CS 1A'

Conformer 1 (C1)

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 (CS)

Jump to S1C1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-266.781178
Energy at 298.15K 
HF Energy-266.172097
Nuclear repulsion energy218.400573
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*
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*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.073 -0.264 0.000
C2 0.000 0.667 0.000
C3 0.473 -1.551 0.000
C4 -1.191 -0.001 0.000
C5 -0.887 -1.436 0.000
C6 0.377 2.125 0.000
H7 1.158 -2.386 0.000
H8 -2.177 0.446 0.000
H9 -1.603 -2.247 0.000
H10 -0.535 2.736 0.000
H11 0.971 2.372 0.891
H12 0.971 2.372 -0.891

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.42091.42082.27952.28392.48792.12423.32693.33143.40352.78432.7843
C21.42092.26871.36622.28291.50533.26572.18833.32662.13632.15472.1547
C31.42082.26872.27401.36443.67751.07973.31842.18974.40404.05424.0542
C42.27951.36622.27401.46662.64203.34721.08272.28322.81453.33213.3321
C52.28392.28291.36441.46663.77852.25442.28201.08234.18654.32994.3299
C62.48791.50533.67752.64203.77854.57813.05644.79961.09801.09941.0994
H72.12423.26571.07973.34722.25444.57814.37522.76455.39444.84474.8447
H83.32692.18833.31841.08272.28203.05644.37522.75372.81723.79663.7966
H93.33143.32662.18972.28321.08234.79962.76452.75375.09595.36285.3628
H103.40352.13634.40402.81454.18651.09805.39442.81725.09591.78771.7877
H112.78432.15474.05423.33214.32991.09944.84473.79665.36281.78771.7829
H122.78432.15474.05423.33214.32991.09944.84473.79665.36281.78771.7829

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 109.735 O1 C2 C6 116.445
O1 C3 C5 110.151 O1 C3 H7 115.637
C2 O1 C3 105.949 C2 C4 C5 107.338
C2 C4 H8 126.267 C2 C6 H10 109.295
C2 C6 H11 110.673 C2 C6 H12 110.673
C3 C5 C6 75.308 C3 C5 H9 126.617
C4 C2 C6 133.821 C4 C5 H9 126.556
C5 C3 H7 134.211 C5 C4 H8 126.394
H10 C6 H11 108.896 H10 C6 H12 108.896
H11 C6 H12 108.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability