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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-229.872081
Energy at 298.15K 
HF Energy-229.872081
Nuclear repulsion energy159.761452
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 3368 3368 0.00 171.59 0.12 0.21
2 A1 3324 3324 0.58 40.05 0.20 0.34
3 A1 1532 1532 15.17 42.95 0.26 0.41
4 A1 1439 1439 5.94 9.42 0.54 0.71
5 A1 1181 1181 0.03 22.67 0.38 0.55
6 A1 1096 1096 2.00 8.54 0.14 0.25
7 A1 1023 1023 42.04 3.30 0.17 0.29
8 A1 896 896 24.53 0.94 0.71 0.83
9 A2 950 950 0.00 1.49 0.75 0.86
10 A2 784 784 0.00 1.62 0.75 0.86
11 A2 627 627 0.00 0.05 0.75 0.86
12 B1 909 909 0.25 0.01 0.75 0.86
13 B1 788 788 122.76 1.04 0.75 0.86
14 B1 623 623 28.33 2.45 0.75 0.86
15 B2 3359 3359 0.22 20.78 0.75 0.86
16 B2 3311 3311 3.68 83.58 0.75 0.86
17 B2 1629 1629 1.78 0.29 0.75 0.86
18 B2 1313 1313 1.19 0.29 0.75 0.86
19 B2 1213 1213 23.04 2.13 0.75 0.86
20 B2 1074 1074 0.08 4.59 0.75 0.86
21 B2 909 909 0.11 4.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15673.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15673.8 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 wB97X-D/6-31G
ABC
0.30881 0.30785 0.15416

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 1.167
C2 0.000 1.114 0.344
C3 0.000 -1.114 0.344
C4 0.000 0.721 -0.959
C5 0.000 -0.721 -0.959
H6 0.000 2.066 0.841
H7 0.000 -2.066 0.841
H8 0.000 1.365 -1.822
H9 0.000 -1.365 -1.822

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.38501.38502.24492.24492.09142.09143.28663.2866
C21.38502.22731.36052.24981.07443.21822.18083.2919
C31.38502.22732.24981.36053.21821.07443.29192.1808
C42.24491.36052.24981.44142.24723.31741.07762.2575
C52.24492.24981.36051.44143.31742.24722.25751.0776
H62.09141.07443.21822.24723.31744.13182.75444.3436
H72.09143.21821.07443.31742.24724.13184.34362.7544
H83.28662.18083.29191.07762.25752.75444.34362.7301
H93.28663.29192.18082.25751.07764.34362.75442.7301

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 109.695 O1 C2 H6 115.932
O1 C3 C5 109.695 O1 C3 H7 115.932
C2 O1 C3 107.037 C2 C4 C5 106.787
C2 C4 H8 126.489 C3 C5 C4 106.787
C3 C5 H9 126.489 C4 C2 H6 134.373
C4 C5 H9 126.724 C5 C3 H7 134.373
C5 C4 H8 126.724
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 -0.497      
2 C 0.066      
3 C 0.066      
4 C -0.212      
5 C -0.212      
6 H 0.207      
7 H 0.207      
8 H 0.187      
9 H 0.187      


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 -1.086 1.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.503 0.000 0.000
y 0.000 -22.951 0.000
z 0.000 0.000 -28.442
Traceless
 xyz
x -5.806 0.000 0.000
y 0.000 7.021 0.000
z 0.000 0.000 -1.215
Polar
3z2-r2-2.431
x2-y2-8.551
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.270 0.000 0.000
y 0.000 6.964 0.000
z 0.000 0.000 6.591


<r2> (average value of r2) Å2
<r2> 82.045
(<r2>)1/2 9.058