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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-229.957141
Energy at 298.15K 
HF Energy-229.957141
Nuclear repulsion energy159.650016
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 BLYP/6-31G(2df,p)
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 3211 3193 0.02 206.62 0.12 0.22
2 A1 3182 3165 2.19 31.08 0.31 0.48
3 A1 1457 1449 12.62 26.76 0.21 0.35
4 A1 1365 1357 5.13 13.92 0.40 0.57
5 A1 1133 1126 0.04 24.73 0.28 0.43
6 A1 1058 1052 4.08 10.71 0.14 0.25
7 A1 984 978 34.60 1.86 0.16 0.27
8 A1 859 854 14.68 0.18 0.71 0.83
9 A2 814 809 0.00 1.03 0.75 0.86
10 A2 688 684 0.00 1.56 0.75 0.86
11 A2 594 591 0.00 0.08 0.75 0.86
12 B1 773 769 9.18 0.83 0.75 0.86
13 B1 728 724 66.19 0.27 0.75 0.86
14 B1 603 600 10.48 1.93 0.75 0.86
15 B2 3204 3186 2.72 15.12 0.75 0.86
16 B2 3171 3154 2.68 104.86 0.75 0.86
17 B2 1535 1526 0.39 0.12 0.75 0.86
18 B2 1245 1238 0.04 0.92 0.75 0.86
19 B2 1159 1153 16.25 1.91 0.75 0.86
20 B2 1024 1018 0.47 3.69 0.75 0.86
21 B2 865 860 0.32 2.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14824.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 14742.7 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 BLYP/6-31G(2df,p)
ABC
0.31177 0.30414 0.15395

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.171
C2 0.000 1.103 0.348
C3 0.000 -1.103 0.348
C4 0.000 0.721 -0.967
C5 0.000 -0.721 -0.967
H6 0.000 2.060 0.857
H7 0.000 -2.060 0.857
H8 0.000 1.379 -1.829
H9 0.000 -1.379 -1.829

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37591.37592.25552.25552.08412.08413.30183.3018
C21.37592.20651.36952.24871.08383.20422.19523.3023
C31.37592.20652.24871.36953.20421.08383.30232.1952
C42.25551.36952.24871.44162.26263.32561.08522.2702
C52.25552.24871.36951.44163.32562.26262.27021.0852
H62.08411.08383.20422.26263.32564.12082.77134.3642
H72.08413.20421.08383.32562.26264.12084.36422.7713
H83.30182.19523.30231.08522.27022.77134.36422.7582
H93.30183.30232.19522.27021.08524.36422.77132.7582

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.478 O1 C2 H6 115.330
O1 C3 C5 110.478 O1 C3 H7 115.330
C2 O1 C3 106.611 C2 C4 C5 106.216
C2 C4 H8 126.438 C3 C5 C4 106.216
C3 C5 H9 126.438 C4 C2 H6 134.192
C4 C5 H9 127.346 C5 C3 H7 134.192
C5 C4 H8 127.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.090      
2 C -0.003      
3 C -0.003      
4 C -0.150      
5 C -0.150      
6 H 0.112      
7 H 0.112      
8 H 0.086      
9 H 0.086      


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 -0.524 0.524
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.806 0.000 0.000
y 0.000 -24.192 0.000
z 0.000 0.000 -27.677
Traceless
 xyz
x -4.871 0.000 0.000
y 0.000 5.050 0.000
z 0.000 0.000 -0.178
Polar
3z2-r2-0.356
x2-y2-6.614
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.113 0.000 0.000
y 0.000 7.753 0.000
z 0.000 0.000 7.040


<r2> (average value of r2) Å2
<r2> 82.141
(<r2>)1/2 9.063