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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-230.038215
Energy at 298.15K 
HF Energy-230.038215
Nuclear repulsion energy160.543470
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/6-31+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 3302 3179 0.04 199.66 0.15 0.26
2 A1 3270 3148 0.38 47.42 0.23 0.37
3 A1 1515 1459 22.44 62.83 0.11 0.20
4 A1 1421 1368 2.30 20.76 0.33 0.50
5 A1 1166 1123 0.10 31.40 0.15 0.27
6 A1 1090 1050 13.27 7.56 0.06 0.12
7 A1 1017 979 46.75 1.62 0.23 0.37
8 A1 883 850 14.91 0.81 0.63 0.77
9 A2 882 849 0.00 0.61 0.75 0.86
10 A2 728 701 0.00 2.11 0.75 0.86
11 A2 609 586 0.00 0.03 0.75 0.86
12 B1 846 814 0.02 2.65 0.75 0.86
13 B1 756 727 123.09 0.19 0.75 0.86
14 B1 618 595 23.92 1.25 0.75 0.86
15 B2 3296 3173 0.30 19.11 0.75 0.86
16 B2 3259 3137 2.94 97.21 0.75 0.86
17 B2 1598 1538 0.00 0.15 0.75 0.86
18 B2 1290 1242 0.23 0.90 0.75 0.86
19 B2 1210 1165 19.89 0.16 0.75 0.86
20 B2 1064 1024 2.12 5.74 0.75 0.86
21 B2 888 855 0.76 4.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15353.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 14780.6 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/6-31+G**
ABC
0.31449 0.30827 0.15567

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.161
C2 0.000 1.098 0.348
C3 0.000 -1.098 0.348
C4 0.000 0.718 -0.961
C5 0.000 -0.718 -0.961
H6 0.000 2.053 0.849
H7 0.000 -2.053 0.849
H8 0.000 1.375 -1.819
H9 0.000 -1.375 -1.819

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36571.36572.24002.24002.07662.07663.28183.2818
C21.36572.19511.36272.23851.07873.19012.18483.2879
C31.36572.19512.23851.36273.19011.07873.28792.1848
C42.24001.36272.23851.43682.24843.30981.08062.2625
C52.24002.23851.36271.43683.30982.24842.26251.0806
H62.07661.07873.19012.24843.30984.10612.75244.3437
H72.07663.19011.07873.30982.24844.10614.34372.7524
H83.28182.18483.28791.08062.26252.75244.34372.7501
H93.28183.28792.18482.26251.08064.34372.75242.7501

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.367 O1 C2 H6 115.831
O1 C3 C5 110.367 O1 C3 H7 115.831
C2 O1 C3 106.957 C2 C4 C5 106.155
C2 C4 H8 126.423 C3 C5 C4 106.155
C3 C5 H9 126.423 C4 C2 H6 133.803
C4 C5 H9 127.422 C5 C3 H7 133.803
C5 C4 H8 127.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.256      
2 C -0.087      
3 C -0.087      
4 C -0.065      
5 C -0.065      
6 H 0.144      
7 H 0.144      
8 H 0.136      
9 H 0.136      


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 -0.732 0.732
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.442 0.000 0.000
y 0.000 -24.382 0.000
z 0.000 0.000 -28.549
Traceless
 xyz
x -5.977 0.000 0.000
y 0.000 6.113 0.000
z 0.000 0.000 -0.137
Polar
3z2-r2-0.273
x2-y2-8.060
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.751 0.000 0.000
y 0.000 8.124 0.000
z 0.000 0.000 7.684


<r2> (average value of r2) Å2
<r2> 82.004
(<r2>)1/2 9.056