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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-230.027375
Energy at 298.15K 
HF Energy-230.027375
Nuclear repulsion energy160.722765
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 B3LYP/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 A1 3300 3171 0.00 196.64 0.12 0.22
2 A1 3270 3142 1.27 33.92 0.25 0.40
3 A1 1529 1469 18.50 31.55 0.24 0.39
4 A1 1430 1374 3.70 15.35 0.43 0.60
5 A1 1173 1127 0.35 25.83 0.29 0.45
6 A1 1098 1055 11.77 8.22 0.19 0.33
7 A1 1023 982 37.74 1.13 0.24 0.39
8 A1 886 851 15.64 0.40 0.68 0.81
9 A2 879 845 0.00 1.25 0.75 0.86
10 A2 727 699 0.00 2.44 0.75 0.86
11 A2 614 590 0.00 0.07 0.75 0.86
12 B1 838 806 0.32 0.25 0.75 0.86
13 B1 761 731 77.81 1.08 0.75 0.86
14 B1 623 599 17.40 2.36 0.75 0.86
15 B2 3294 3165 2.04 16.57 0.75 0.86
16 B2 3260 3132 2.84 99.67 0.75 0.86
17 B2 1613 1550 0.54 0.19 0.75 0.86
18 B2 1296 1245 0.16 0.82 0.75 0.86
19 B2 1220 1172 17.46 1.31 0.75 0.86
20 B2 1071 1029 1.12 4.94 0.75 0.86
21 B2 890 855 0.37 3.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15396.9 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 14793.3 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 B3LYP/6-31G**
ABC
0.31557 0.30863 0.15603

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.161
C2 0.000 1.095 0.347
C3 0.000 -1.095 0.347
C4 0.000 0.718 -0.960
C5 0.000 -0.718 -0.960
H6 0.000 2.051 0.847
H7 0.000 -2.051 0.847
H8 0.000 1.374 -1.818
H9 0.000 -1.374 -1.818

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36421.36422.23892.23892.07492.07493.28063.2806
C21.36422.19001.36052.23481.07873.18542.18343.2839
C31.36422.19002.23481.36053.18541.07873.28392.1834
C42.23891.36052.23481.43542.24553.30611.08032.2607
C52.23892.23481.36051.43543.30612.24552.26071.0803
H62.07491.07873.18542.24553.30614.10192.74994.3395
H72.07493.18541.07873.30612.24554.10194.33952.7499
H83.28062.18343.28391.08032.26072.74994.33952.7473
H93.28063.28392.18342.26071.08034.33952.74992.7473

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.514 O1 C2 H6 115.790
O1 C3 C5 110.514 O1 C3 H7 115.790
C2 O1 C3 106.771 C2 C4 C5 106.101
C2 C4 H8 126.511 C3 C5 C4 106.101
C3 C5 H9 126.511 C4 C2 H6 133.696
C4 C5 H9 127.388 C5 C3 H7 133.696
C5 C4 H8 127.388
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.406      
2 C 0.129      
3 C 0.129      
4 C -0.131      
5 C -0.131      
6 H 0.111      
7 H 0.111      
8 H 0.095      
9 H 0.095      


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 -0.630 0.630
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.993 0.000 0.000
y 0.000 -23.724 0.000
z 0.000 0.000 -27.673
Traceless
 xyz
x -5.295 0.000 0.000
y 0.000 5.609 0.000
z 0.000 0.000 -0.314
Polar
3z2-r2-0.629
x2-y2-7.269
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.589 0.000 0.000
y 0.000 7.272 0.000
z 0.000 0.000 6.747


<r2> (average value of r2) Å2
<r2> 81.241
(<r2>)1/2 9.013