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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-230.028733
Energy at 298.15K 
HF Energy-230.028733
Nuclear repulsion energy159.823391
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/6-311+G(3df,2p)
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 3202 3185 0.02 210.40 0.13 0.23
2 A1 3172 3154 0.84 48.24 0.23 0.37
3 A1 1452 1444 15.66 55.18 0.10 0.19
4 A1 1364 1357 3.82 20.31 0.29 0.45
5 A1 1130 1124 0.00 31.20 0.14 0.24
6 A1 1046 1040 3.90 8.57 0.05 0.09
7 A1 977 972 43.46 3.20 0.15 0.26
8 A1 859 855 15.98 0.20 0.75 0.86
9 A2 854 849 0.00 0.28 0.75 0.86
10 A2 692 688 0.00 2.61 0.75 0.86
11 A2 597 593 0.00 0.03 0.75 0.86
12 B1 815 810 0.32 1.86 0.75 0.86
13 B1 726 722 109.69 0.07 0.75 0.86
14 B1 602 599 19.47 0.76 0.75 0.86
15 B2 3196 3179 0.38 18.34 0.75 0.86
16 B2 3161 3144 2.65 98.34 0.75 0.86
17 B2 1531 1523 0.01 0.09 0.75 0.86
18 B2 1256 1249 0.09 0.60 0.75 0.86
19 B2 1141 1135 17.72 0.72 0.75 0.86
20 B2 1015 1010 0.34 4.70 0.75 0.86
21 B2 865 861 0.81 2.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14827.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 14745.6 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 BLYP/6-311+G(3df,2p)
ABC
0.31170 0.30554 0.15430

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.170
C2 0.000 1.104 0.347
C3 0.000 -1.104 0.347
C4 0.000 0.720 -0.964
C5 0.000 -0.720 -0.964
H6 0.000 2.062 0.848
H7 0.000 -2.062 0.848
H8 0.000 1.375 -1.825
H9 0.000 -1.375 -1.825

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37761.37762.25172.25172.08692.08693.29573.2957
C21.37762.20881.36562.24581.08073.20572.18853.2960
C31.37762.20882.24581.36563.20571.08073.29602.1885
C42.25171.36562.24581.43922.25453.31931.08242.2649
C52.25172.24581.36561.43923.31932.25452.26491.0824
H62.08691.08073.20572.25453.31934.12372.75974.3539
H72.08693.20571.08073.31932.25454.12374.35392.7597
H83.29572.18853.29601.08242.26492.75974.35392.7501
H93.29573.29602.18852.26491.08244.35392.75972.7501

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.341 O1 C2 H6 115.661
O1 C3 C5 110.341 O1 C3 H7 115.661
C2 O1 C3 106.584 C2 C4 C5 106.367
C2 C4 H8 126.369 C3 C5 C4 106.367
C3 C5 H9 126.369 C4 C2 H6 133.998
C4 C5 H9 127.265 C5 C3 H7 133.998
C5 C4 H8 127.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.539      
2 C 0.055      
3 C 0.055      
4 C -0.124      
5 C -0.124      
6 H 0.180      
7 H 0.180      
8 H 0.159      
9 H 0.159      


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 -0.675 0.675
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.371 0.000 0.000
y 0.000 -24.900 0.000
z 0.000 0.000 -28.708
Traceless
 xyz
x -5.567 0.000 0.000
y 0.000 5.640 0.000
z 0.000 0.000 -0.073
Polar
3z2-r2-0.145
x2-y2-7.471
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.305 0.000 0.000
y 0.000 8.895 0.000
z 0.000 0.000 8.128


<r2> (average value of r2) Å2
<r2> 82.671
(<r2>)1/2 9.092