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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-229.946064
Energy at 298.15K 
HF Energy-229.946064
Nuclear repulsion energy159.267527
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 BLYP/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 3218 3193 0.01 206.17 0.12 0.22
2 A1 3187 3162 2.89 39.47 0.24 0.39
3 A1 1469 1458 14.74 28.83 0.25 0.40
4 A1 1381 1370 4.08 14.20 0.45 0.62
5 A1 1135 1126 0.05 25.61 0.30 0.46
6 A1 1059 1050 4.45 10.00 0.20 0.34
7 A1 986 978 36.71 2.20 0.17 0.30
8 A1 856 850 15.13 0.30 0.73 0.85
9 A2 835 828 0.00 1.40 0.75 0.86
10 A2 680 675 0.00 2.70 0.75 0.86
11 A2 594 589 0.00 0.06 0.75 0.86
12 B1 790 784 2.38 0.94 0.75 0.86
13 B1 725 719 72.00 0.72 0.75 0.86
14 B1 602 597 11.75 2.28 0.75 0.86
15 B2 3212 3187 3.18 20.34 0.75 0.86
16 B2 3176 3152 3.39 105.10 0.75 0.86
17 B2 1551 1539 0.23 0.07 0.75 0.86
18 B2 1255 1246 0.03 1.03 0.75 0.86
19 B2 1161 1152 16.16 2.03 0.75 0.86
20 B2 1028 1020 0.46 4.40 0.75 0.86
21 B2 862 856 0.31 3.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14879.3 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 14764.8 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 BLYP/6-31G**
ABC
0.31033 0.30267 0.15323

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.175
C2 0.000 1.106 0.348
C3 0.000 -1.106 0.348
C4 0.000 0.721 -0.968
C5 0.000 -0.721 -0.968
H6 0.000 2.067 0.854
H7 0.000 -2.067 0.854
H8 0.000 1.380 -1.833
H9 0.000 -1.380 -1.833

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.38101.38102.26162.26162.09202.09203.30993.3099
C21.38102.21291.37212.25281.08553.21352.19903.3082
C31.38102.21292.25281.37213.21351.08553.30822.1990
C42.26161.37212.25281.44272.26533.33111.08732.2726
C52.26162.25281.37211.44273.33112.26532.27261.0873
H62.09201.08553.21352.26533.33114.13432.77364.3710
H72.09203.21351.08553.33112.26534.13434.37102.7736
H83.30992.19903.30821.08732.27262.77364.37102.7604
H93.30993.30822.19902.27261.08734.37102.77362.7604

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.461 O1 C2 H6 115.499
O1 C3 C5 110.461 O1 C3 H7 115.499
C2 O1 C3 106.481 C2 C4 C5 106.299
C2 C4 H8 126.405 C3 C5 C4 106.299
C3 C5 H9 126.405 C4 C2 H6 134.040
C4 C5 H9 127.296 C5 C3 H7 134.040
C5 C4 H8 127.296
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.373      
2 C 0.129      
3 C 0.129      
4 C -0.095      
5 C -0.095      
6 H 0.086      
7 H 0.086      
8 H 0.067      
9 H 0.067      


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 -0.592 0.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.958 0.000 0.000
y 0.000 -24.006 0.000
z 0.000 0.000 -27.776
Traceless
 xyz
x -5.067 0.000 0.000
y 0.000 5.360 0.000
z 0.000 0.000 -0.294
Polar
3z2-r2-0.587
x2-y2-6.951
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.610 0.000 0.000
y 0.000 7.575 0.000
z 0.000 0.000 6.909


<r2> (average value of r2) Å2
<r2> 82.454
(<r2>)1/2 9.080