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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-230.020585
Energy at 298.15K 
HF Energy-230.020585
Nuclear repulsion energy160.697903
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 B3LYPultrafine/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 3306 3167 0.03 189.72 0.13 0.23
2 A1 3274 3137 2.01 38.36 0.22 0.36
3 A1 1530 1466 18.36 30.38 0.24 0.38
4 A1 1433 1373 3.95 15.58 0.43 0.60
5 A1 1175 1126 0.31 25.15 0.30 0.46
6 A1 1099 1053 11.62 8.27 0.19 0.31
7 A1 1024 981 37.76 1.10 0.22 0.36
8 A1 886 849 15.78 0.43 0.69 0.82
9 A2 873 836 0.00 1.29 0.75 0.86
10 A2 723 693 0.00 2.22 0.75 0.86
11 A2 614 588 0.00 0.07 0.75 0.86
12 B1 831 796 0.77 0.25 0.75 0.86
13 B1 758 726 79.78 1.04 0.75 0.86
14 B1 623 597 17.57 2.37 0.75 0.86
15 B2 3300 3162 2.91 19.01 0.75 0.86
16 B2 3263 3126 3.09 97.56 0.75 0.86
17 B2 1615 1547 0.60 0.20 0.75 0.86
18 B2 1299 1245 0.15 0.77 0.75 0.86
19 B2 1222 1170 18.13 1.34 0.75 0.86
20 B2 1073 1028 1.07 4.71 0.75 0.86
21 B2 891 853 0.36 3.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15406.0 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 14758.9 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 B3LYPultrafine/6-31G*
ABC
0.31557 0.30845 0.15599

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.161
C2 0.000 1.095 0.347
C3 0.000 -1.095 0.347
C4 0.000 0.718 -0.960
C5 0.000 -0.718 -0.960
H6 0.000 2.050 0.850
H7 0.000 -2.050 0.850
H8 0.000 1.374 -1.819
H9 0.000 -1.374 -1.819

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36421.36422.23932.23932.07362.07363.28193.2819
C21.36422.18991.36072.23511.07933.18502.18473.2848
C31.36422.18992.23511.36073.18501.07933.28482.1847
C42.23931.36072.23511.43582.24743.30731.08112.2614
C52.23932.23511.36071.43583.30732.24742.26141.0811
H62.07361.07933.18502.24743.30734.10022.75384.3416
H72.07363.18501.07933.30732.24744.10024.34162.7538
H83.28192.18473.28481.08112.26142.75384.34162.7476
H93.28193.28482.18472.26141.08114.34162.75382.7476

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.529 O1 C2 H6 115.626
O1 C3 C5 110.529 O1 C3 H7 115.626
C2 O1 C3 106.765 C2 C4 C5 106.089
C2 C4 H8 126.560 C3 C5 C4 106.089
C3 C5 H9 126.560 C4 C2 H6 133.845
C4 C5 H9 127.351 C5 C3 H7 133.845
C5 C4 H8 127.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.394      
2 C 0.079      
3 C 0.079      
4 C -0.177      
5 C -0.177      
6 H 0.155      
7 H 0.155      
8 H 0.140      
9 H 0.140      


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 -0.633 0.633
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.043 0.000 0.000
y 0.000 -23.698 0.000
z 0.000 0.000 -27.623
Traceless
 xyz
x -5.382 0.000 0.000
y 0.000 5.635 0.000
z 0.000 0.000 -0.253
Polar
3z2-r2-0.506
x2-y2-7.345
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.547 0.000 0.000
y 0.000 7.209 0.000
z 0.000 0.000 6.701


<r2> (average value of r2) Å2
<r2> 81.257
(<r2>)1/2 9.014