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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBEPBE/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 PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-229.836831
Energy at 298.15K 
HF Energy-229.836831
Nuclear repulsion energy160.343927
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 PBEPBE/Def2TZVPP
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 3215 3177 0.01 232.49 0.11 0.21
2 A1 3189 3150 0.38 33.21 0.29 0.45
3 A1 1468 1450 16.20 43.37 0.14 0.25
4 A1 1379 1362 2.57 11.86 0.39 0.56
5 A1 1134 1120 0.15 30.42 0.15 0.26
6 A1 1070 1057 6.90 7.98 0.18 0.31
7 A1 988 976 41.01 1.73 0.17 0.29
8 A1 859 848 13.32 0.35 0.73 0.84
9 A2 846 836 0.00 0.62 0.75 0.86
10 A2 698 689 0.00 0.03 0.75 0.86
11 A2 599 592 0.00 0.02 0.75 0.86
12 B1 808 799 0.11 0.19 0.75 0.86
13 B1 728 719 106.34 0.33 0.75 0.86
14 B1 611 604 19.40 1.03 0.75 0.86
15 B2 3209 3170 0.47 12.94 0.75 0.86
16 B2 3178 3140 2.05 103.09 0.75 0.86
17 B2 1545 1526 0.08 0.31 0.75 0.86
18 B2 1242 1227 0.18 0.63 0.75 0.86
19 B2 1168 1154 16.81 0.51 0.75 0.86
20 B2 1028 1015 2.69 4.46 0.75 0.86
21 B2 863 853 0.43 3.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14912.2 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 14731.8 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 PBEPBE/Def2TZVPP
ABC
0.31472 0.30674 0.15534

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.165
C2 0.000 1.097 0.348
C3 0.000 -1.097 0.348
C4 0.000 0.717 -0.963
C5 0.000 -0.717 -0.963
H6 0.000 2.058 0.850
H7 0.000 -2.058 0.850
H8 0.000 1.376 -1.824
H9 0.000 -1.376 -1.824

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36781.36782.24482.24482.08162.08163.29043.2904
C21.36782.19441.36492.23771.08373.19452.19003.2917
C31.36782.19442.23771.36493.19451.08373.29172.1900
C42.24481.36492.23771.43302.25493.31391.08492.2629
C52.24482.23771.36491.43303.31392.25492.26291.0849
H62.08161.08373.19452.25493.31394.11532.75974.3522
H72.08163.19451.08373.31392.25494.11534.35222.7597
H83.29042.19003.29171.08492.26292.75974.35222.7520
H93.29043.29172.19002.26291.08494.35222.75972.7520

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.467 O1 C2 H6 115.742
O1 C3 C5 110.467 O1 C3 H7 115.742
C2 O1 C3 106.676 C2 C4 C5 106.195
C2 C4 H8 126.370 C3 C5 C4 106.195
C3 C5 H9 126.370 C4 C2 H6 133.791
C4 C5 H9 127.435 C5 C3 H7 133.791
C5 C4 H8 127.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.165      
2 C -0.021      
3 C -0.021      
4 C -0.150      
5 C -0.150      
6 H 0.133      
7 H 0.133      
8 H 0.121      
9 H 0.121      


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 -0.551 0.551
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.989 0.000 0.000
y 0.000 -24.458 0.000
z 0.000 0.000 -28.075
Traceless
 xyz
x -5.723 0.000 0.000
y 0.000 5.574 0.000
z 0.000 0.000 0.149
Polar
3z2-r20.297
x2-y2-7.531
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.548 0.000 0.000
y 0.000 8.403 0.000
z 0.000 0.000 7.732


<r2> (average value of r2) Å2
<r2> 81.986
(<r2>)1/2 9.055