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All results from a given calculation for C4H6O (Furan, 2,5-dihydro-)

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-230.565456
Energy at 298.15K-230.572529
HF Energy-229.801909
Nuclear repulsion energy173.751943
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 CCD/6-31+G**
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 3308 3117 8.10      
2 A1 3091 2913 5.68      
3 A1 1731 1631 0.05      
4 A1 1585 1494 0.80      
5 A1 1442 1359 8.06      
6 A1 1150 1084 0.75      
7 A1 1022 963 9.64      
8 A1 938 884 20.79      
9 A1 762 718 6.98      
10 A2 3124 2944 0.00      
11 A2 1248 1176 0.00      
12 A2 1091 1028 0.00      
13 A2 940 886 0.00      
14 A2 379 357 0.00      
15 B1 3126 2946 76.71      
16 B1 1202 1133 1.75      
17 B1 1062 1001 25.35      
18 B1 682 643 42.61      
19 B1 44 42 12.29      
20 B2 3284 3094 3.37      
21 B2 3087 2909 126.91      
22 B2 1577 1486 2.72      
23 B2 1421 1339 1.96      
24 B2 1370 1291 0.05      
25 B2 1173 1105 107.05      
26 B2 955 900 0.26      
27 B2 820 772 1.81      

Unscaled Zero Point Vibrational Energy (zpe) 20806.1 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 19605.6 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 CCD/6-31+G**
ABC
0.26589 0.26312 0.13917

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.189
C2 0.000 1.178 0.370
C3 0.000 0.667 -1.045
C4 0.000 -0.667 -1.045
C5 0.000 -1.178 0.370
H6 0.886 1.777 0.601
H7 -0.886 1.777 0.601
H8 -0.886 -1.777 0.601
H9 0.886 -1.777 0.601
H10 0.000 1.314 -1.910
H11 0.000 -1.314 -1.910

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.43482.33162.33161.43482.07152.07152.07152.07153.36653.3665
C21.43481.50502.32612.35681.09441.09443.09453.09452.28483.3787
C32.33161.50501.33472.32612.17422.17423.07763.07761.08042.1623
C42.33162.32611.33471.50503.07763.07762.17422.17422.16231.0804
C51.43482.35682.32611.50503.09453.09451.09441.09443.37872.2848
H62.07151.09442.17423.07763.09451.77303.97243.55482.70304.0805
H72.07151.09442.17423.07763.09451.77303.55483.97242.70304.0805
H82.07153.09453.07762.17421.09443.97243.55481.77304.08052.7030
H92.07153.09453.07762.17421.09443.55483.97241.77304.08052.7030
H103.36652.28481.08042.16233.37872.70302.70304.08054.08052.6286
H113.36653.37872.16231.08042.28484.08054.08052.70302.70302.6286

picture of Furan, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 104.932 O1 C2 H6 109.237
O1 C2 H7 109.237 O1 C5 C4 104.932
O1 C5 H8 109.237 O1 C5 H9 109.237
C2 O1 C5 110.433 C2 C3 C4 109.851
C2 C3 H10 123.362 C3 C2 H6 112.571
C3 C2 H7 112.571 C3 C4 C5 109.851
C3 C4 H11 126.787 C4 C3 H10 126.787
C4 C5 H8 112.571 C4 C5 H9 112.571
C5 C4 H11 123.362 H6 C2 H7 108.193
H8 C5 H9 108.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability