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

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-231.128636
Energy at 298.15K-231.135747
Nuclear repulsion energy174.574916
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 B1B95/6-31+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 3258 3117 7.45      
2 A1 3016 2885 5.51      
3 A1 1713 1639 0.12      
4 A1 1522 1456 2.27      
5 A1 1395 1334 5.38      
6 A1 1118 1070 1.29      
7 A1 1006 962 7.87      
8 A1 932 891 24.96      
9 A1 752 719 6.71      
10 A2 3038 2906 0.00      
11 A2 1224 1171 0.00      
12 A2 1056 1010 0.00      
13 A2 950 909 0.00      
14 A2 391 374 0.00      
15 B1 3040 2908 84.74      
16 B1 1178 1127 2.77      
17 B1 1023 978 20.67      
18 B1 677 647 42.95      
19 B1 84 81 10.45      
20 B2 3235 3094 2.72      
21 B2 3011 2880 149.32      
22 B2 1512 1446 0.78      
23 B2 1382 1322 2.99      
24 B2 1324 1266 0.56      
25 B2 1148 1098 105.43      
26 B2 936 895 0.29      
27 B2 807 772 1.65      

Unscaled Zero Point Vibrational Energy (zpe) 20363.0 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 19479.3 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 B1B95/6-31+G**
ABC
0.26865 0.26591 0.14071

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.181
C2 0.000 1.169 0.369
C3 0.000 0.665 -1.039
C4 0.000 -0.665 -1.039
C5 0.000 -1.169 0.369
H6 0.887 1.776 0.599
H7 -0.887 1.776 0.599
H8 -0.887 -1.776 0.599
H9 0.887 -1.776 0.599
H10 0.000 1.314 -1.906
H11 0.000 -1.314 -1.906

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.42302.31752.31751.42302.06902.06902.06902.06903.35503.3550
C21.42301.49552.31162.33721.09911.09913.08403.08402.27963.3673
C32.31751.49551.32952.31162.16862.16863.07023.07021.08312.1603
C42.31752.31161.32951.49553.07023.07022.16862.16862.16031.0831
C51.42302.33722.31161.49553.08403.08401.09911.09913.36732.2796
H62.06901.09912.16863.07023.08401.77323.97063.55272.69654.0752
H72.06901.09912.16863.07023.08401.77323.55273.97062.69654.0752
H82.06903.08403.07022.16861.09913.97063.55271.77324.07522.6965
H92.06903.08403.07022.16861.09913.55273.97061.77324.07522.6965
H103.35502.27961.08312.16033.36732.69652.69654.07524.07522.6280
H113.35503.36732.16031.08312.27964.07524.07522.69652.69652.6280

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 105.106 O1 C2 H6 109.573
O1 C2 H7 109.573 O1 C5 C4 105.106
O1 C5 H8 109.573 O1 C5 H9 109.573
C2 O1 C5 110.409 C2 C3 C4 109.690
C2 C3 H10 123.479 C3 C2 H6 112.505
C3 C2 H7 112.505 C3 C4 C5 109.690
C3 C4 H11 126.832 C4 C3 H10 126.832
C4 C5 H8 112.505 C4 C5 H9 112.505
C5 C4 H11 123.479 H6 C2 H7 107.544
H8 C5 H9 107.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.339      
2 C -0.250      
3 C -0.032      
4 C -0.032      
5 C -0.250      
6 H 0.149      
7 H 0.149      
8 H 0.149      
9 H 0.149      
10 H 0.153      
11 H 0.153      


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 -1.778 1.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.309 0.000 0.000
y 0.000 -25.941 0.000
z 0.000 0.000 -32.424
Traceless
 xyz
x -2.126 0.000 0.000
y 0.000 5.925 0.000
z 0.000 0.000 -3.799
Polar
3z2-r2-7.598
x2-y2-5.368
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.528 0.000 0.000
y 0.000 9.064 0.000
z 0.000 0.000 6.641


<r2> (average value of r2) Å2
<r2> 94.024
(<r2>)1/2 9.697