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All results from a given calculation for C4H4O (Furan)

using model chemistry: wB97X-D/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/6-31G*
 hartrees
Energy at 0K-229.942571
Energy at 298.15K 
HF Energy-229.942571
Nuclear repulsion energy161.354140
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 wB97X-D/6-31G*
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 3329 3157 0.04 192.19 0.12 0.22
2 A1 3300 3130 1.36 28.53 0.28 0.44
3 A1 1557 1477 20.82 32.34 0.23 0.38
4 A1 1455 1380 3.42 14.86 0.43 0.60
5 A1 1189 1127 0.77 25.54 0.28 0.44
6 A1 1121 1063 17.10 7.00 0.21 0.34
7 A1 1037 984 36.67 0.65 0.34 0.50
8 A1 895 849 15.47 0.48 0.68 0.81
9 A2 898 852 0.00 1.12 0.75 0.86
10 A2 751 713 0.00 2.25 0.75 0.86
11 A2 621 589 0.00 0.07 0.75 0.86
12 B1 861 817 0.04 0.03 0.75 0.86
13 B1 773 734 90.53 1.16 0.75 0.86
14 B1 632 600 22.06 2.45 0.75 0.86
15 B2 3322 3151 2.81 13.92 0.75 0.86
16 B2 3289 3120 2.40 97.31 0.75 0.86
17 B2 1642 1558 0.79 0.31 0.75 0.86
18 B2 1311 1244 0.95 0.59 0.75 0.86
19 B2 1259 1194 18.47 0.89 0.75 0.86
20 B2 1090 1034 2.56 5.06 0.75 0.86
21 B2 897 851 0.28 3.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15615.9 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 14811.7 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 wB97X-D/6-31G*
ABC
0.31821 0.31094 0.15727

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.154
C2 0.000 1.088 0.348
C3 0.000 -1.088 0.348
C4 0.000 0.717 -0.957
C5 0.000 -0.717 -0.957
H6 0.000 2.044 0.849
H7 0.000 -2.044 0.849
H8 0.000 1.375 -1.813
H9 0.000 -1.375 -1.813

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35471.35472.22942.22942.06622.06623.27073.2707
C21.35472.17671.35652.22701.07883.17182.18013.2767
C31.35472.17672.22701.35653.17181.07883.27672.1801
C42.22941.35652.22701.43302.24113.29841.08032.2597
C52.22942.22701.35651.43303.29842.24112.25971.0803
H62.06621.07883.17182.24113.29844.08702.74554.3328
H72.06623.17181.07883.29842.24114.08704.33282.7455
H83.27072.18013.27671.08032.25972.74554.33282.7491
H93.27073.27672.18012.25971.08034.33282.74552.7491

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.632 O1 C2 H6 115.755
O1 C3 C5 110.632 O1 C3 H7 115.755
C2 O1 C3 106.916 C2 C4 C5 105.910
C2 C4 H8 126.564 C3 C5 C4 105.910
C3 C5 H9 126.564 C4 C2 H6 133.613
C4 C5 H9 127.526 C5 C3 H7 133.613
C5 C4 H8 127.526
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.401      
2 C 0.056      
3 C 0.056      
4 C -0.225      
5 C -0.225      
6 H 0.190      
7 H 0.190      
8 H 0.179      
9 H 0.179      


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 -0.622 0.622
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.126 0.000 0.000
y 0.000 -23.300 0.000
z 0.000 0.000 -27.364
Traceless
 xyz
x -5.794 0.000 0.000
y 0.000 5.945 0.000
z 0.000 0.000 -0.150
Polar
3z2-r2-0.301
x2-y2-7.826
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.556 0.000 0.000
y 0.000 7.075 0.000
z 0.000 0.000 6.670


<r2> (average value of r2) Å2
<r2> 80.650
(<r2>)1/2 8.981