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All results from a given calculation for C4H4O (Furan)

using model chemistry: HF/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/daug-cc-pVDZ
 hartrees
Energy at 0K-228.656682
Energy at 298.15K 
HF Energy-228.656682
Nuclear repulsion energy162.133854
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 HF/daug-cc-pVDZ
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 3449 3145 0.05 171.27 0.13 0.23
2 A1 3415 3115 0.43 33.06 0.25 0.40
3 A1 1659 1513 33.44 101.70 0.08 0.14
4 A1 1529 1394 2.31 26.87 0.26 0.41
5 A1 1248 1138 0.60 36.30 0.14 0.25
6 A1 1143 1043 35.98 5.80 0.06 0.11
7 A1 1075 980 39.90 1.16 0.53 0.69
8 A1 949 865 18.55 0.24 0.54 0.70
9 A2 984 897 0.00 1.81 0.75 0.86
10 A2 833 760 0.00 2.17 0.75 0.86
11 A2 651 594 0.00 0.27 0.75 0.86
12 B1 982 895 2.25 4.20 0.75 0.86
13 B1 850 776 117.38 0.00 0.75 0.86
14 B1 651 594 34.05 1.39 0.75 0.86
15 B2 3442 3139 1.37 11.57 0.75 0.86
16 B2 3403 3103 3.86 85.64 0.75 0.86
17 B2 1740 1586 0.07 1.25 0.75 0.86
18 B2 1384 1262 0.06 0.38 0.75 0.86
19 B2 1292 1178 23.12 0.11 0.75 0.86
20 B2 1143 1042 0.02 6.95 0.75 0.86
21 B2 954 870 2.36 3.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16386.6 cm-1
Scaled (by 0.912) Zero Point Vibrational Energy (zpe) 14944.6 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 HF/daug-cc-pVDZ
ABC
0.31849 0.31640 0.15872

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.145
C2 0.000 1.084 0.346
C3 0.000 -1.084 0.346
C4 0.000 0.722 -0.949
C5 0.000 -0.722 -0.949
H6 0.000 2.039 0.835
H7 0.000 -2.039 0.835
H8 0.000 1.382 -1.797
H9 0.000 -1.382 -1.797

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.34621.34622.21422.21422.06232.06233.25013.2501
C21.34622.16711.34392.22181.07323.16052.16343.2669
C31.34622.16712.22181.34393.16051.07323.26692.1634
C42.21421.34392.22181.44452.21683.28701.07492.2693
C52.21422.22181.34391.44453.28702.21682.26931.0749
H62.06231.07323.16052.21683.28704.07772.71244.3165
H72.06233.16051.07323.28702.21684.07774.31652.7124
H83.25012.16343.26691.07492.26932.71244.31652.7650
H93.25013.26692.16342.26931.07494.31652.71242.7650

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.799 O1 C2 H6 116.493
O1 C3 C5 110.799 O1 C3 H7 116.493
C2 O1 C3 107.209 C2 C4 C5 105.597
C2 C4 H8 126.509 C3 C5 C4 105.597
C3 C5 H9 126.509 C4 C2 H6 132.708
C4 C5 H9 127.894 C5 C3 H7 132.708
C5 C4 H8 127.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.706      
2 C 1.089      
3 C 1.089      
4 C 0.559      
5 C 0.559      
6 H -0.605      
7 H -0.605      
8 H -0.689      
9 H -0.689      


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 -0.713 0.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.676 0.000 0.000
y 0.000 -24.303 0.000
z 0.000 0.000 -28.290
Traceless
 xyz
x -6.380 0.000 0.000
y 0.000 6.180 0.000
z 0.000 0.000 0.200
Polar
3z2-r20.399
x2-y2-8.373
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.106 0.000 0.000
y 0.000 8.066 0.000
z 0.000 0.000 7.637


<r2> (average value of r2) Å2
<r2> 80.803
(<r2>)1/2 8.989