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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBEPBEultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-229.823998
Energy at 298.15K 
HF Energy-229.823998
Nuclear repulsion energy160.160099
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 PBEPBEultrafine/TZVP
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 3219 3182 0.02 222.86 0.12 0.22
2 A1 3192 3155 0.12 36.41 0.26 0.41
3 A1 1469 1452 16.58 44.22 0.16 0.27
4 A1 1377 1361 2.83 13.13 0.41 0.58
5 A1 1136 1123 0.03 28.24 0.17 0.30
6 A1 1068 1056 7.97 8.31 0.14 0.24
7 A1 988 977 45.82 1.96 0.15 0.26
8 A1 861 851 13.07 0.76 0.74 0.85
9 A2 821 812 0.00 0.79 0.75 0.86
10 A2 690 682 0.00 0.02 0.75 0.86
11 A2 582 575 0.00 0.03 0.75 0.86
12 B1 792 783 0.77 0.02 0.75 0.86
13 B1 721 713 113.33 0.49 0.75 0.86
14 B1 607 600 19.11 1.18 0.75 0.86
15 B2 3212 3176 0.12 14.38 0.75 0.86
16 B2 3181 3145 1.95 100.48 0.75 0.86
17 B2 1545 1527 0.12 0.32 0.75 0.86
18 B2 1245 1231 0.12 0.77 0.75 0.86
19 B2 1163 1150 18.31 0.57 0.75 0.86
20 B2 1028 1017 3.17 4.38 0.75 0.86
21 B2 864 854 0.34 3.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14880.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 14711.2 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 PBEPBEultrafine/TZVP
ABC
0.31394 0.30611 0.15499

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.167
C2 0.000 1.099 0.348
C3 0.000 -1.099 0.348
C4 0.000 0.717 -0.963
C5 0.000 -0.717 -0.963
H6 0.000 2.059 0.851
H7 0.000 -2.059 0.851
H8 0.000 1.376 -1.826
H9 0.000 -1.376 -1.826

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37051.37052.24742.24742.08342.08343.29403.2940
C21.37052.19811.36562.24001.08443.19832.19173.2944
C31.37052.19812.24001.36563.19831.08443.29442.1917
C42.24741.36562.24001.43432.25713.31691.08582.2642
C52.24742.24001.36561.43433.31692.25712.26421.0858
H62.08341.08443.19832.25713.31694.11882.76334.3557
H72.08343.19831.08443.31692.25714.11884.35572.7633
H83.29402.19173.29441.08582.26422.76334.35572.7524
H93.29403.29442.19172.26421.08584.35572.76332.7524

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.445 O1 C2 H6 115.652
O1 C3 C5 110.445 O1 C3 H7 115.652
C2 O1 C3 106.631 C2 C4 C5 106.240
C2 C4 H8 126.390 C3 C5 C4 106.240
C3 C5 H9 126.390 C4 C2 H6 133.904
C4 C5 H9 127.371 C5 C3 H7 133.904
C5 C4 H8 127.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.092      
2 C -0.084      
3 C -0.084      
4 C -0.122      
5 C -0.122      
6 H 0.125      
7 H 0.125      
8 H 0.128      
9 H 0.128      


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 -0.621 0.621
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.166 0.000 0.000
y 0.000 -24.306 0.000
z 0.000 0.000 -28.226
Traceless
 xyz
x -5.899 0.000 0.000
y 0.000 5.890 0.000
z 0.000 0.000 0.009
Polar
3z2-r20.018
x2-y2-7.860
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.295 0.000 0.000
y 0.000 8.126 0.000
z 0.000 0.000 7.574


<r2> (average value of r2) Å2
<r2> 82.163
(<r2>)1/2 9.064