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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-229.880074
Energy at 298.15K-229.887550
HF Energy-229.880074
Nuclear repulsion energy175.934466
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3370 3054 8.96      
2 A1 3152 2857 12.97      
3 A1 1827 1656 0.01      
4 A1 1659 1504 0.74      
5 A1 1537 1393 9.71      
6 A1 1210 1097 0.66      
7 A1 1051 953 22.15      
8 A1 1012 917 15.63      
9 A1 810 734 8.19      
10 A2 3166 2870 0.00      
11 A2 1335 1210 0.00      
12 A2 1171 1061 0.00      
13 A2 1068 968 0.00      
14 A2 433 393 0.00      
15 B1 3169 2872 110.32      
16 B1 1304 1182 0.95      
17 B1 1136 1030 30.63      
18 B1 758 687 40.74      
19 B1 138 125 10.20      
20 B2 3344 3031 5.52      
21 B2 3147 2852 171.66      
22 B2 1648 1494 2.09      
23 B2 1504 1363 6.73      
24 B2 1452 1316 0.50      
25 B2 1258 1140 139.43      
26 B2 978 886 0.10      
27 B2 880 798 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 21758.1 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 19721.6 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 HF/Def2TZVPP
ABC
0.27367 0.26847 0.14263

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.169
C2 0.000 1.161 0.371
C3 0.000 0.653 -1.035
C4 0.000 -0.653 -1.035
C5 0.000 -1.161 0.371
H6 0.877 1.757 0.602
H7 -0.877 1.757 0.602
H8 -0.877 -1.757 0.602
H9 0.877 -1.757 0.602
H10 0.000 1.294 -1.893
H11 0.000 -1.294 -1.893

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.40832.29892.29891.40832.04372.04372.04372.04373.32403.3240
C21.40831.49572.29602.32201.08501.08503.05533.05532.26873.3399
C32.29891.49571.30692.29602.16022.16023.04263.04261.07052.1277
C42.29892.29601.30691.49573.04263.04262.16022.16022.12771.0705
C51.40832.32202.29601.49573.05533.05531.08501.08503.33992.2687
H62.04371.08502.16023.04263.05531.75433.92693.51322.68494.0371
H72.04371.08502.16023.04263.05531.75433.51323.92692.68494.0371
H82.04373.05533.04262.16021.08503.92693.51321.75434.03712.6849
H92.04373.05533.04262.16021.08503.51323.92691.75434.03712.6849
H103.32402.26871.07052.12773.33992.68492.68494.03714.03712.5873
H113.32403.33992.12771.07052.26874.03714.03712.68492.68492.5873

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 104.635 O1 C2 H6 109.422
O1 C2 H7 109.422 O1 C5 C4 104.635
O1 C5 H8 109.422 O1 C5 H9 109.422
C2 O1 C5 111.055 C2 C3 C4 109.838
C2 C3 H10 123.428 C3 C2 H6 112.695
C3 C2 H7 112.695 C3 C4 C5 109.838
C3 C4 H11 126.734 C4 C3 H10 126.734
C4 C5 H8 112.695 C4 C5 H9 112.695
C5 C4 H11 123.428 H6 C2 H7 107.895
H8 C5 H9 107.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.440      
2 C 0.211      
3 C -0.147      
4 C -0.147      
5 C 0.211      
6 H 0.035      
7 H 0.035      
8 H 0.035      
9 H 0.035      
10 H 0.088      
11 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.683 1.683
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.261 0.000 0.000
y 0.000 -26.062 0.000
z 0.000 0.000 -32.299
Traceless
 xyz
x -2.081 0.000 0.000
y 0.000 5.718 0.000
z 0.000 0.000 -3.637
Polar
3z2-r2-7.274
x2-y2-5.199
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.315 0.000 0.000
y 0.000 8.685 0.000
z 0.000 0.000 6.338


<r2> (average value of r2) Å2
<r2> 92.947
(<r2>)1/2 9.641