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All results from a given calculation for C4H4O (Furan)

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-229.941904
Energy at 298.15K 
HF Energy-229.941904
Nuclear repulsion energy161.517029
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 B1B95/6-31+G**
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 3329 3185 0.02 208.21 0.14 0.24
2 A1 3300 3157 0.15 36.84 0.27 0.42
3 A1 1545 1478 25.42 61.18 0.12 0.21
4 A1 1446 1383 1.32 16.91 0.36 0.53
5 A1 1181 1130 0.85 33.08 0.14 0.24
6 A1 1118 1069 17.61 6.10 0.14 0.24
7 A1 1033 988 43.54 1.00 0.31 0.48
8 A1 883 845 13.05 0.86 0.59 0.74
9 A2 890 852 0.00 0.70 0.75 0.86
10 A2 743 711 0.00 1.28 0.75 0.86
11 A2 611 584 0.00 0.04 0.75 0.86
12 B1 858 821 0.07 1.86 0.75 0.86
13 B1 765 732 122.76 0.18 0.75 0.86
14 B1 625 598 24.38 1.21 0.75 0.86
15 B2 3323 3179 0.37 14.75 0.75 0.86
16 B2 3289 3146 2.47 98.89 0.75 0.86
17 B2 1627 1556 0.01 0.17 0.75 0.86
18 B2 1293 1237 0.92 0.95 0.75 0.86
19 B2 1250 1195 18.81 0.07 0.75 0.86
20 B2 1079 1032 3.97 5.34 0.75 0.86
21 B2 885 846 0.60 4.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15535.2 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 14861.0 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 B1B95/6-31+G**
ABC
0.31885 0.31158 0.15759

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.153
C2 0.000 1.088 0.348
C3 0.000 -1.088 0.348
C4 0.000 0.714 -0.956
C5 0.000 -0.714 -0.956
H6 0.000 2.042 0.847
H7 0.000 -2.042 0.847
H8 0.000 1.372 -1.811
H9 0.000 -1.372 -1.811

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35351.35352.22652.22652.06512.06513.26553.2655
C21.35352.17671.35682.22481.07683.17022.17723.2730
C31.35352.17672.22481.35683.17021.07683.27302.1772
C42.22651.35682.22481.42832.23983.29411.07832.2543
C52.22652.22481.35681.42833.29412.23982.25431.0783
H62.06511.07683.17022.23983.29414.08472.74114.3269
H72.06513.17021.07683.29412.23984.08474.32692.7411
H83.26552.17723.27301.07832.25432.74114.32692.7440
H93.26553.27302.17722.25431.07834.32692.74112.7440

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.472 O1 C2 H6 115.894
O1 C3 C5 110.472 O1 C3 H7 115.894
C2 O1 C3 107.039 C2 C4 C5 106.009
C2 C4 H8 126.400 C3 C5 C4 106.009
C3 C5 H9 126.400 C4 C2 H6 133.635
C4 C5 H9 127.592 C5 C3 H7 133.635
C5 C4 H8 127.592
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.228      
2 C -0.126      
3 C -0.126      
4 C -0.082      
5 C -0.082      
6 H 0.163      
7 H 0.163      
8 H 0.158      
9 H 0.158      


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 -0.681 0.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.133 0.000 0.000
y 0.000 -24.023 0.000
z 0.000 0.000 -28.106
Traceless
 xyz
x -6.068 0.000 0.000
y 0.000 6.097 0.000
z 0.000 0.000 -0.028
Polar
3z2-r2-0.057
x2-y2-8.110
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.554 0.000 0.000
y 0.000 7.915 0.000
z 0.000 0.000 7.491


<r2> (average value of r2) Å2
<r2> 81.031
(<r2>)1/2 9.002