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All results from a given calculation for C4H6O (Furan, 2,3-dihydro-)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-229.688571
Energy at 298.15K-229.695995
Nuclear repulsion energy173.943334
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 HF/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 3479 3141 6.87      
2 A 3434 3101 1.29      
3 A 3319 2997 43.42      
4 A 3264 2947 47.59      
5 A 3234 2920 22.34      
6 A 3204 2893 43.95      
7 A 1840 1662 45.95      
8 A 1683 1519 0.24      
9 A 1661 1499 0.63      
10 A 1532 1383 0.77      
11 A 1459 1317 17.44      
12 A 1440 1301 3.62      
13 A 1379 1246 0.70      
14 A 1316 1188 4.67      
15 A 1276 1152 32.85      
16 A 1202 1085 1.63      
17 A 1163 1050 105.89      
18 A 1088 982 0.33      
19 A 1082 977 7.92      
20 A 988 892 12.96      
21 A 979 884 62.09      
22 A 919 830 7.76      
23 A 907 819 2.60      
24 A 846 764 49.86      
25 A 773 698 6.63      
26 A 500 451 31.47      
27 A 87 79 5.59      

Unscaled Zero Point Vibrational Energy (zpe) 22026.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 19887.4 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 HF/6-31G
ABC
0.26560 0.26283 0.13885

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.339 1.877 0.001
C2 0.743 0.991 -0.000
H3 2.194 -0.626 0.000
C4 1.197 -0.247 0.000
O5 0.203 -1.210 -0.000
H6 -1.182 1.481 -0.873
H7 -1.182 1.481 0.873
C8 -0.773 0.985 -0.000
H9 -1.624 -0.853 -0.880
H10 -1.624 -0.853 0.881
C11 -1.091 -0.532 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.06812.64532.12923.28982.69752.69692.29324.12454.12433.4224
C21.06812.17231.31872.26642.16992.16991.51643.12713.12722.3844
H32.64532.17231.06612.07424.07414.07403.37613.92433.92433.2862
C42.12921.31871.06611.38393.06753.06752.32393.01683.01682.3061
O53.28982.26642.07421.38393.15033.15042.40262.05942.05951.4613
H62.69752.16994.07413.06753.15031.74591.08412.37582.95292.1964
H72.69692.16994.07403.06753.15041.74591.08412.95292.37612.1965
C82.29321.51643.37612.32392.40261.08411.08412.20852.20871.5502
H94.12453.12713.92433.01682.05942.37582.95292.20851.76111.0780
H104.12433.12723.92433.01682.05952.95292.37612.20871.76111.0780
C113.42242.38443.28622.30611.46132.19642.19651.55021.07801.0780

picture of Furan, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 125.943 H1 C2 C8 124.145
C2 C4 H3 130.967 C2 C4 O5 113.961
C2 C8 H6 112.037 C2 C8 H7 112.033
C2 C8 C11 102.063 H3 C4 O5 115.072
C4 C2 C8 109.911 C4 O5 C11 108.261
O5 C11 C8 105.804 O5 C11 H9 107.430
O5 C11 H10 107.434 H6 C8 H7 107.263
H6 C8 C11 111.752 H7 C8 C11 111.761
C8 C11 H9 113.123 C8 C11 H10 113.132
H9 C11 H10 109.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.201 0.137    
2 C -0.283 -0.401    
3 H 0.224 0.128    
4 C 0.219 0.157    
5 O -0.716 -0.489    
6 H 0.178 -0.091    
7 H 0.178 -0.091    
8 C -0.383 0.438    
9 H 0.180 0.026    
10 H 0.180 0.026    
11 C 0.021 0.161    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.623 1.841 0.001 1.943
CHELPG -0.616 1.749 0.001 1.854
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.359 -0.383 0.000
y -0.383 6.802 -0.000
z 0.000 -0.000 3.913


<r2> (average value of r2) Å2
<r2> 94.763
(<r2>)1/2 9.735