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All results from a given calculation for C4H4O (Furan)

using model chemistry: B97D3/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/3-21G
 hartrees
Energy at 0K-228.607579
Energy at 298.15K 
HF Energy-228.607579
Nuclear repulsion energy157.974347
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 B97D3/3-21G
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 3281 3225 0.11 171.94 0.12 0.22
2 A1 3240 3185 1.42 33.22 0.28 0.43
3 A1 1448 1423 5.80 31.59 0.26 0.41
4 A1 1365 1342 11.18 12.08 0.48 0.65
5 A1 1138 1119 0.13 19.97 0.41 0.58
6 A1 1052 1034 0.05 9.89 0.13 0.23
7 A1 975 958 18.99 3.44 0.19 0.32
8 A1 856 841 26.67 1.30 0.30 0.46
9 A2 872 857 0.00 1.29 0.75 0.86
10 A2 712 700 0.00 1.63 0.75 0.86
11 A2 608 597 0.00 0.07 0.75 0.86
12 B1 840 825 0.39 0.05 0.75 0.86
13 B1 739 726 125.88 1.14 0.75 0.86
14 B1 599 589 20.24 2.83 0.75 0.86
15 B2 3270 3215 1.03 19.43 0.75 0.86
16 B2 3228 3173 2.78 88.93 0.75 0.86
17 B2 1536 1510 1.73 0.08 0.75 0.86
18 B2 1266 1244 1.21 0.28 0.75 0.86
19 B2 1143 1123 17.49 3.46 0.75 0.86
20 B2 993 976 0.11 3.63 0.75 0.86
21 B2 891 875 0.05 2.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15025.1 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 14769.7 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 B97D3/3-21G
ABC
0.30302 0.29979 0.15070

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.193
C2 0.000 1.127 0.340
C3 0.000 -1.127 0.340
C4 0.000 0.725 -0.969
C5 0.000 -0.725 -0.969
H6 0.000 2.086 0.834
H7 0.000 -2.086 0.834
H8 0.000 1.367 -1.838
H9 0.000 -1.367 -1.838

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.41341.41342.28022.28022.11652.11653.32553.3255
C21.41342.25411.36952.26791.07843.25062.19203.3116
C31.41342.25412.26791.36953.25061.07843.31162.1920
C42.28021.36952.26791.44972.25883.33911.08102.2653
C52.28022.26791.36951.44973.33912.25882.26531.0810
H62.11651.07843.25062.25883.33914.17162.76754.3661
H72.11653.25061.07843.33912.25884.17164.36612.7675
H83.32552.19203.31161.08102.26532.76754.36612.7338
H93.32553.31162.19202.26531.08104.36612.76752.7338

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.035 O1 C2 H6 115.642
O1 C3 C5 110.035 O1 C3 H7 115.642
C2 O1 C3 105.773 C2 C4 C5 107.078
C2 C4 H8 126.487 C3 C5 C4 107.078
C3 C5 H9 126.487 C4 C2 H6 134.323
C4 C5 H9 126.434 C5 C3 H7 134.323
C5 C4 H8 126.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.451      
2 C 0.056      
3 C 0.056      
4 C -0.255      
5 C -0.255      
6 H 0.227      
7 H 0.227      
8 H 0.198      
9 H 0.198      


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 -0.819 0.819
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.963 0.000 0.000
y 0.000 -23.109 0.000
z 0.000 0.000 -27.938
Traceless
 xyz
x -6.440 0.000 0.000
y 0.000 6.842 0.000
z 0.000 0.000 -0.401
Polar
3z2-r2-0.803
x2-y2-8.854
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.853 0.000 0.000
y 0.000 7.026 0.000
z 0.000 0.000 6.379


<r2> (average value of r2) Å2
<r2> 83.461
(<r2>)1/2 9.136