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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-229.952048
Energy at 298.15K 
HF Energy-229.952048
Nuclear repulsion energy159.088824
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 B3LYP/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 3346 3219 0.00 174.07 0.12 0.22
2 A1 3298 3173 1.12 48.88 0.18 0.31
3 A1 1506 1449 13.04 41.24 0.26 0.42
4 A1 1420 1366 6.20 9.86 0.54 0.70
5 A1 1170 1126 0.06 22.77 0.39 0.56
6 A1 1082 1041 0.23 8.09 0.14 0.25
7 A1 999 961 36.75 5.03 0.16 0.28
8 A1 882 848 25.48 0.93 0.63 0.78
9 A2 919 884 0.00 1.60 0.75 0.86
10 A2 751 723 0.00 1.70 0.75 0.86
11 A2 619 595 0.00 0.05 0.75 0.86
12 B1 875 841 0.87 0.05 0.75 0.86
13 B1 769 740 108.05 0.99 0.75 0.86
14 B1 613 590 22.54 2.40 0.75 0.86
15 B2 3338 3211 0.34 25.12 0.75 0.86
16 B2 3285 3160 4.18 86.14 0.75 0.86
17 B2 1604 1543 1.38 0.18 0.75 0.86
18 B2 1302 1252 0.87 0.35 0.75 0.86
19 B2 1187 1142 20.22 3.28 0.75 0.86
20 B2 1046 1006 0.15 3.79 0.75 0.86
21 B2 899 865 0.21 3.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15454.0 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 14866.7 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 B3LYP/6-31G
ABC
0.30633 0.30511 0.15286

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.176
C2 0.000 1.120 0.343
C3 0.000 -1.120 0.343
C4 0.000 0.722 -0.962
C5 0.000 -0.722 -0.962
H6 0.000 2.073 0.841
H7 0.000 -2.073 0.841
H8 0.000 1.365 -1.828
H9 0.000 -1.365 -1.828

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.39571.39572.25632.25632.09972.09973.29933.2993
C21.39572.24021.36452.25741.07543.23172.18493.2998
C31.39572.24022.25741.36453.23171.07543.29982.1849
C42.25631.36452.25741.44362.25353.32611.07872.2593
C52.25632.25741.36451.44363.32612.25352.25931.0787
H62.09971.07543.23172.25353.32614.14592.76194.3526
H72.09973.23171.07543.32612.25354.14594.35262.7619
H83.29932.18493.29981.07872.25932.76194.35262.7298
H93.29933.29982.18492.25931.07874.35262.76192.7298

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 109.653 O1 C2 H6 115.759
O1 C3 C5 109.653 O1 C3 H7 115.759
C2 O1 C3 106.749 C2 C4 C5 106.972
C2 C4 H8 126.431 C3 C5 C4 106.972
C3 C5 H9 126.431 C4 C2 H6 134.587
C4 C5 H9 126.597 C5 C3 H7 134.587
C5 C4 H8 126.597
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.480      
2 C 0.088      
3 C 0.088      
4 C -0.161      
5 C -0.161      
6 H 0.168      
7 H 0.168      
8 H 0.145      
9 H 0.145      


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 -1.077 1.077
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.393 0.000 0.000
y 0.000 -23.355 0.000
z 0.000 0.000 -28.653
Traceless
 xyz
x -5.389 0.000 0.000
y 0.000 6.667 0.000
z 0.000 0.000 -1.279
Polar
3z2-r2-2.557
x2-y2-8.038
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.263 0.000 0.000
y 0.000 7.127 0.000
z 0.000 0.000 6.639


<r2> (average value of r2) Å2
<r2> 82.666
(<r2>)1/2 9.092