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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-229.685997
Energy at 298.15K 
HF Energy-229.685997
Nuclear repulsion energy159.702581
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 PBE1PBE/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 3374 3226 0.00 171.52 0.12 0.21
2 A1 3329 3182 0.21 42.35 0.19 0.32
3 A1 1530 1462 14.72 42.45 0.26 0.41
4 A1 1437 1374 5.33 7.87 0.58 0.73
5 A1 1178 1126 0.05 22.82 0.36 0.53
6 A1 1103 1055 1.19 8.92 0.16 0.27
7 A1 1022 976 41.66 3.75 0.16 0.28
8 A1 892 853 23.02 0.93 0.71 0.83
9 A2 934 892 0.00 1.36 0.75 0.86
10 A2 769 735 0.00 1.34 0.75 0.86
11 A2 624 597 0.00 0.03 0.75 0.86
12 B1 891 852 0.50 0.00 0.75 0.86
13 B1 781 747 124.71 0.96 0.75 0.86
14 B1 623 596 26.16 2.38 0.75 0.86
15 B2 3366 3217 0.00 21.56 0.75 0.86
16 B2 3315 3169 3.17 83.23 0.75 0.86
17 B2 1624 1552 1.77 0.27 0.75 0.86
18 B2 1305 1248 1.19 0.31 0.75 0.86
19 B2 1210 1157 22.13 2.19 0.75 0.86
20 B2 1070 1023 0.21 4.26 0.75 0.86
21 B2 905 865 0.09 3.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15641.0 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 14951.2 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 PBE1PBE/6-31G
ABC
0.30904 0.30722 0.15406

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.169
C2 0.000 1.114 0.344
C3 0.000 -1.114 0.344
C4 0.000 0.719 -0.960
C5 0.000 -0.719 -0.960
H6 0.000 2.066 0.842
H7 0.000 -2.066 0.842
H8 0.000 1.364 -1.824
H9 0.000 -1.364 -1.824

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.38591.38592.24662.24662.09202.09203.28893.2889
C21.38592.22771.36212.24951.07513.21912.18263.2923
C31.38592.22772.24951.36213.21911.07513.29232.1826
C42.24661.36212.24951.43872.24993.31781.07832.2553
C52.24662.24951.36211.43873.31782.24992.25531.0783
H62.09201.07513.21912.24993.31784.13292.75764.3447
H72.09203.21911.07513.31782.24994.13294.34472.7576
H83.28892.18263.29231.07832.25532.75764.34472.7274
H93.28893.29232.18262.25531.07834.34472.75762.7274

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 109.679 O1 C2 H6 115.871
O1 C3 C5 109.679 O1 C3 H7 115.871
C2 O1 C3 106.971 C2 C4 C5 106.835
C2 C4 H8 126.466 C3 C5 C4 106.835
C3 C5 H9 126.466 C4 C2 H6 134.451
C4 C5 H9 126.699 C5 C3 H7 134.451
C5 C4 H8 126.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.498      
2 C 0.068      
3 C 0.068      
4 C -0.214      
5 C -0.214      
6 H 0.207      
7 H 0.207      
8 H 0.188      
9 H 0.188      


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 -1.058 1.058
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.607 0.000 0.000
y 0.000 -23.073 0.000
z 0.000 0.000 -28.441
Traceless
 xyz
x -5.851 0.000 0.000
y 0.000 6.951 0.000
z 0.000 0.000 -1.100
Polar
3z2-r2-2.201
x2-y2-8.534
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.293 0.000 0.000
y 0.000 7.026 0.000
z 0.000 0.000 6.582


<r2> (average value of r2) Å2
<r2> 82.134
(<r2>)1/2 9.063