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All results from a given calculation for C4H4O (Furan)

using model chemistry: HSEh1PBE/6-311G**

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/6-311G**
 hartrees
Energy at 0K-229.833544
Energy at 298.15K 
HF Energy-229.833544
Nuclear repulsion energy161.558301
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/6-311G**
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 3304 3173 0.02 203.47 0.14 0.25
2 A1 3275 3145 0.23 29.99 0.30 0.46
3 A1 1533 1473 20.26 37.87 0.19 0.32
4 A1 1432 1376 2.36 13.83 0.41 0.58
5 A1 1176 1129 0.95 27.20 0.21 0.34
6 A1 1112 1068 16.50 5.76 0.26 0.41
7 A1 1026 985 44.21 0.80 0.24 0.39
8 A1 893 858 13.57 0.59 0.70 0.82
9 A2 892 856 0.00 0.83 0.75 0.86
10 A2 745 715 0.00 0.24 0.75 0.86
11 A2 619 595 0.00 0.01 0.75 0.86
12 B1 860 826 0.06 0.33 0.75 0.86
13 B1 766 735 108.34 0.76 0.75 0.86
14 B1 632 607 25.25 1.85 0.75 0.86
15 B2 3297 3166 0.69 12.83 0.75 0.86
16 B2 3264 3135 2.31 100.33 0.75 0.86
17 B2 1614 1551 0.70 0.50 0.75 0.86
18 B2 1285 1234 0.24 0.68 0.75 0.86
19 B2 1231 1183 17.86 0.37 0.75 0.86
20 B2 1069 1027 3.96 4.90 0.75 0.86
21 B2 896 860 0.36 3.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15459.6 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 14847.4 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/6-311G**
ABC
0.31909 0.31169 0.15767

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.153
C2 0.000 1.087 0.348
C3 0.000 -1.087 0.348
C4 0.000 0.715 -0.956
C5 0.000 -0.715 -0.956
H6 0.000 2.042 0.847
H7 0.000 -2.042 0.847
H8 0.000 1.372 -1.811
H9 0.000 -1.372 -1.811

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35321.35322.22652.22652.06502.06503.26623.2662
C21.35322.17461.35542.22381.07753.16912.17713.2723
C31.35322.17462.22381.35543.16911.07753.27232.1771
C42.22651.35542.22381.42922.23863.29371.07882.2553
C52.22652.22381.35541.42923.29372.23862.25531.0788
H62.06501.07753.16912.23863.29374.08442.74084.3268
H72.06503.16911.07753.29372.23864.08444.32682.7408
H83.26622.17713.27231.07882.25532.74084.32682.7445
H93.26623.27232.17712.25531.07884.32682.74082.7445

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.572 O1 C2 H6 115.865
O1 C3 C5 110.572 O1 C3 H7 115.865
C2 O1 C3 106.935 C2 C4 C5 105.961
C2 C4 H8 126.478 C3 C5 C4 105.961
C3 C5 H9 126.478 C4 C2 H6 133.563
C4 C5 H9 127.561 C5 C3 H7 133.563
C5 C4 H8 127.561
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.222      
2 C 0.063      
3 C 0.063      
4 C -0.189      
5 C -0.189      
6 H 0.124      
7 H 0.124      
8 H 0.112      
9 H 0.112      


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 -0.573 0.573
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.771 0.000 0.000
y 0.000 -23.790 0.000
z 0.000 0.000 -27.737
Traceless
 xyz
x -6.008 0.000 0.000
y 0.000 5.964 0.000
z 0.000 0.000 0.044
Polar
3z2-r20.088
x2-y2-7.981
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.324 0.000 0.000
y 0.000 7.466 0.000
z 0.000 0.000 6.967


<r2> (average value of r2) Å2
<r2> 80.801
(<r2>)1/2 8.989