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All results from a given calculation for C4H4O (Furan)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-229.221815
Energy at 298.15K-229.226692
HF Energy-228.624732
Nuclear repulsion energy161.823316
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 CID/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 A1 3418 3157 0.01      
2 A1 3386 3128 0.60      
3 A1 1626 1502 25.92      
4 A1 1509 1394 3.52      
5 A1 1233 1139 0.60      
6 A1 1148 1060 23.42      
7 A1 1075 993 39.20      
8 A1 923 853 17.51      
9 A2 891 823 0.00      
10 A2 787 727 0.00      
11 A2 624 576 0.00      
12 B1 896 827 0.12      
13 B1 809 748 91.70      
14 B1 642 593 28.97      
15 B2 3412 3152 2.43      
16 B2 3374 3117 2.56      
17 B2 1714 1583 0.83      
18 B2 1364 1260 1.91      
19 B2 1304 1205 26.00      
20 B2 1135 1049 0.47      
21 B2 927 856 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 16097.9 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 14869.6 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 CID/6-31G*
ABC
0.31912 0.31360 0.15817

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.152
C2 0.000 1.086 0.345
C3 0.000 -1.086 0.345
C4 0.000 0.717 -0.952
C5 0.000 -0.717 -0.952
H6 0.000 2.039 0.840
H7 0.000 -2.039 0.840
H8 0.000 1.371 -1.805
H9 0.000 -1.371 -1.805

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35351.35352.22262.22262.06232.06233.25963.2596
C21.35352.17251.34792.22091.07363.16392.16853.2650
C31.35352.17252.22091.34793.16391.07363.26502.1685
C42.22261.34792.22091.43412.22673.28711.07532.2559
C52.22262.22091.34791.43413.28712.22672.25591.0753
H62.06231.07363.16392.22673.28714.07722.72834.3157
H72.06233.16391.07363.28712.22674.07724.31572.7283
H83.25962.16853.26501.07532.25592.72834.31572.7425
H93.25963.26502.16852.25591.07534.31572.72832.7425

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.727 O1 C2 H6 115.875
O1 C3 C5 110.727 O1 C3 H7 115.875
C2 O1 C3 106.750 C2 C4 C5 105.898
C2 C4 H8 126.625 C3 C5 C4 105.898
C3 C5 H9 126.625 C4 C2 H6 133.398
C4 C5 H9 127.477 C5 C3 H7 133.398
C5 C4 H8 127.477
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability