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

using model chemistry: HF/CEP-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/CEP-31G*
 hartrees
Energy at 0K-41.099837
Energy at 298.15K-41.107303
Nuclear repulsion energy94.198843
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/CEP-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 3451 3099 20.41      
2 A 3421 3072 2.41      
3 A 3326 2987 83.28      
4 A 3278 2944 78.70      
5 A 3254 2922 57.72      
6 A 3228 2898 74.33      
7 A 1838 1650 93.09      
8 A 1659 1490 0.43      
9 A 1632 1466 0.14      
10 A 1544 1387 9.32      
11 A 1460 1311 4.87      
12 A 1417 1273 5.49      
13 A 1358 1220 6.70      
14 A 1318 1184 23.73      
15 A 1267 1138 111.76      
16 A 1193 1071 46.24      
17 A 1163 1044 7.05      
18 A 1095 983 26.54      
19 A 1034 928 7.16      
20 A 1024 920 36.37      
21 A 1000 898 20.03      
22 A 914 821 7.01      
23 A 888 798 8.50      
24 A 819 736 57.97      
25 A 725 651 1.03      
26 A 482 433 28.27      
27 A 149 134 2.56      

Unscaled Zero Point Vibrational Energy (zpe) 21968.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 19727.8 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/CEP-31G*
ABC
0.27032 0.26063 0.14076

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.171 2.016 0.126
C2 0.646 1.079 0.058
H3 2.256 -0.412 0.032
C4 1.214 -0.136 0.010
O5 0.341 -1.175 -0.102
H6 -1.214 1.226 -1.063
H7 -1.437 1.430 0.674
C8 -0.861 0.898 -0.083
H9 -1.644 -1.122 -0.607
H10 -1.282 -0.893 1.114
C11 -0.974 -0.640 0.100

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07652.66062.15543.30442.77982.72812.32834.27843.93083.4135
C21.07652.19431.34192.27932.17622.19961.52363.24422.95262.3616
H32.66062.19431.07822.06553.99024.17583.38244.01503.73073.2385
C42.15541.34191.07821.36112.98343.14902.31963.08512.83192.2466
O53.30442.27932.06551.36113.01703.24722.39562.04882.04791.4338
H62.77982.17623.99022.98343.01701.76261.09192.42933.03842.2109
H72.72812.19964.17583.14903.24721.76261.08982.86252.36892.1968
C82.32831.52363.38242.31962.39561.09191.08982.22852.19481.5524
H94.27843.24424.01503.08512.04882.42932.86252.22851.77431.0867
H103.93082.95263.73072.83192.04793.03842.36892.19481.77431.0903
C113.41352.36163.23852.24661.43382.21092.19681.55241.08671.0903

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 125.711 H1 C2 C8 126.278
C2 C4 H3 129.791 C2 C4 O5 114.970
C2 C8 H6 111.557 C2 C8 H7 113.602
C2 C8 C11 100.303 H3 C4 O5 115.231
C4 C2 C8 107.927 C4 O5 C11 106.962
O5 C11 C8 106.616 O5 C11 H9 107.955
O5 C11 H10 107.669 H6 C8 H7 107.782
H6 C8 C11 112.293 H7 C8 C11 111.291
C8 C11 H9 114.060 C8 C11 H10 111.100
H9 C11 H10 109.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.292      
2 C -0.211      
3 H 0.239      
4 C -0.252      
5 O -0.286      
6 H 0.102      
7 H 0.109      
8 C -0.171      
9 H 0.142      
10 H 0.111      
11 C -0.075      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.720 1.151 0.202 1.373
CHELPG        
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 6.519 -0.483 0.067
y -0.483 7.012 0.028
z 0.067 0.028 4.308


<r2> (average value of r2) Å2
<r2> 79.032
(<r2>)1/2 8.890