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All results from a given calculation for C4H4O (Furan)

using model chemistry: HSEh1PBE/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 HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-229.794224
Energy at 298.15K 
HF Energy-229.794224
Nuclear repulsion energy161.077026
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 HSEh1PBE/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 3315 3189 0.01 216.84 0.12 0.22
2 A1 3286 3161 0.07 26.77 0.32 0.48
3 A1 1542 1483 21.18 37.46 0.20 0.34
4 A1 1436 1381 1.35 11.46 0.48 0.65
5 A1 1174 1130 2.23 27.75 0.21 0.34
6 A1 1112 1070 13.86 6.36 0.42 0.59
7 A1 1017 978 42.10 1.16 0.41 0.58
8 A1 887 853 11.93 0.22 0.63 0.77
9 A2 890 856 0.00 0.84 0.75 0.86
10 A2 741 713 0.00 1.59 0.75 0.86
11 A2 619 595 0.00 0.02 0.75 0.86
12 B1 853 821 0.14 0.01 0.75 0.86
13 B1 763 734 88.04 1.04 0.75 0.86
14 B1 631 607 20.77 2.22 0.75 0.86
15 B2 3308 3182 0.28 12.40 0.75 0.86
16 B2 3275 3150 1.99 106.72 0.75 0.86
17 B2 1621 1559 0.49 0.43 0.75 0.86
18 B2 1273 1225 1.04 0.73 0.75 0.86
19 B2 1237 1190 15.81 0.57 0.75 0.86
20 B2 1062 1022 4.52 5.29 0.75 0.86
21 B2 889 855 0.28 3.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15464.8 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 14875.6 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 HSEh1PBE/cc-pVDZ
ABC
0.31783 0.30936 0.15677

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.156
C2 0.000 1.088 0.350
C3 0.000 -1.088 0.350
C4 0.000 0.716 -0.959
C5 0.000 -0.716 -0.959
H6 0.000 2.050 0.854
H7 0.000 -2.050 0.854
H8 0.000 1.379 -1.820
H9 0.000 -1.379 -1.820

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35451.35452.23332.23332.07192.07193.28003.2800
C21.35452.17681.36112.22931.08543.17842.18913.2860
C31.35452.17682.22931.36113.17841.08543.28602.1891
C42.23331.36112.22931.43212.25083.30701.08652.2652
C52.23332.22931.36111.43213.30702.25082.26521.0865
H62.07191.08543.17842.25083.30704.09952.75624.3482
H72.07193.17841.08543.30702.25084.09954.34822.7562
H83.28002.18913.28601.08652.26522.75624.34822.7589
H93.28003.28602.18912.26521.08654.34822.75622.7589

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.651 O1 C2 H6 115.810
O1 C3 C5 110.651 O1 C3 H7 115.810
C2 O1 C3 106.941 C2 C4 C5 105.878
C2 C4 H8 126.490 C3 C5 C4 105.878
C3 C5 H9 126.490 C4 C2 H6 133.539
C4 C5 H9 127.632 C5 C3 H7 133.539
C5 C4 H8 127.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.170      
2 C 0.107      
3 C 0.107      
4 C -0.058      
5 C -0.058      
6 H 0.027      
7 H 0.027      
8 H 0.008      
9 H 0.008      


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 -0.483 0.483
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.513 0.000 0.000
y 0.000 -23.938 0.000
z 0.000 0.000 -27.544
Traceless
 xyz
x -5.772 0.000 0.000
y 0.000 5.590 0.000
z 0.000 0.000 0.182
Polar
3z2-r20.364
x2-y2-7.574
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.909 0.000 0.000
y 0.000 7.511 0.000
z 0.000 0.000 6.915


<r2> (average value of r2) Å2
<r2> 81.141
(<r2>)1/2 9.008