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All results from a given calculation for C4H4O (Furan)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-227.170197
Energy at 298.15K 
HF Energy-227.170197
Nuclear repulsion energy157.649777
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 TPSSh/STO-3G
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 3534 3534 5.01 104.38 0.12 0.21
2 A1 3498 3498 21.23 23.26 0.52 0.68
3 A1 1609 1609 3.92 14.77 0.33 0.49
4 A1 1505 1505 13.87 17.52 0.47 0.64
5 A1 1213 1213 0.70 23.37 0.33 0.49
6 A1 1136 1136 0.26 10.35 0.41 0.58
7 A1 1061 1061 10.18 1.89 0.11 0.20
8 A1 894 894 6.29 0.18 0.44 0.61
9 A2 922 922 0.00 1.13 0.75 0.86
10 A2 753 753 0.00 2.33 0.75 0.86
11 A2 626 626 0.00 0.23 0.75 0.86
12 B1 884 884 0.15 0.98 0.75 0.86
13 B1 776 776 43.43 0.25 0.75 0.86
14 B1 601 601 0.83 1.45 0.75 0.86
15 B2 3518 3518 22.40 1.85 0.75 0.86
16 B2 3489 3489 9.94 71.71 0.75 0.86
17 B2 1699 1699 3.14 0.14 0.75 0.86
18 B2 1364 1364 4.08 0.35 0.75 0.86
19 B2 1263 1263 4.65 2.36 0.75 0.86
20 B2 1130 1130 0.86 5.78 0.75 0.86
21 B2 912 912 0.00 3.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16193.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16193.2 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 TPSSh/STO-3G
ABC
0.30631 0.29468 0.15019

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.207
C2 0.000 1.115 0.341
C3 0.000 -1.115 0.341
C4 0.000 0.723 -0.976
C5 0.000 -0.723 -0.976
H6 0.000 2.095 0.834
H7 0.000 -2.095 0.834
H8 0.000 1.379 -1.852
H9 0.000 -1.379 -1.852

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.41091.41092.29932.29932.12752.12753.35473.3547
C21.41092.22921.37462.26111.09703.24692.20893.3208
C31.41092.22922.26111.37463.24691.09703.32082.2089
C42.29931.37462.26111.44572.27153.34911.09402.2769
C52.29932.26111.37461.44573.34912.27152.27691.0940
H62.12751.09703.24692.27153.34914.18942.77964.3910
H72.12753.24691.09703.34912.27154.18944.39102.7796
H83.35472.20893.32081.09402.27692.77964.39102.7581
H93.35473.32082.20892.27691.09404.39102.77962.7581

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 111.257 O1 C2 H6 115.489
O1 C3 C5 111.257 O1 C3 H7 115.489
C2 O1 C3 104.369 C2 C4 C5 106.558
C2 C4 H8 126.588 C3 C5 C4 106.558
C3 C5 H9 126.588 C4 C2 H6 133.254
C4 C5 H9 126.854 C5 C3 H7 133.254
C5 C4 H8 126.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.118      
2 C -0.002      
3 C -0.002      
4 C -0.110      
5 C -0.110      
6 H 0.089      
7 H 0.089      
8 H 0.082      
9 H 0.082      


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 -0.234 0.234
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.756 0.000 0.000
y 0.000 4.871 0.000
z 0.000 0.000 4.281


<r2> (average value of r2) Å2
<r2> 82.735
(<r2>)1/2 9.096