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All results from a given calculation for C4H4O (Furan)

using model chemistry: M06-2X/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 M06-2X/6-31G*
 hartrees
Energy at 0K-229.922644
Energy at 298.15K 
HF Energy-229.922644
Nuclear repulsion energy161.358989
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 M06-2X/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 3339 3162 0.04 201.31 0.12 0.22
2 A1 3312 3136 0.14 29.59 0.28 0.44
3 A1 1564 1481 24.22 32.42 0.23 0.38
4 A1 1455 1378 3.06 14.45 0.40 0.58
5 A1 1191 1128 2.08 26.26 0.28 0.44
6 A1 1124 1065 20.71 6.67 0.27 0.43
7 A1 1036 981 33.69 0.77 0.54 0.70
8 A1 895 847 15.16 0.40 0.60 0.75
9 A2 905 857 0.00 0.94 0.75 0.86
10 A2 765 724 0.00 3.17 0.75 0.86
11 A2 620 587 0.00 0.06 0.75 0.86
12 B1 872 826 0.04 0.14 0.75 0.86
13 B1 780 739 87.01 1.14 0.75 0.86
14 B1 634 600 22.38 2.37 0.75 0.86
15 B2 3333 3157 1.12 14.55 0.75 0.86
16 B2 3301 3126 1.79 101.33 0.75 0.86
17 B2 1651 1563 0.96 0.28 0.75 0.86
18 B2 1305 1236 2.70 0.52 0.75 0.86
19 B2 1270 1203 18.11 1.10 0.75 0.86
20 B2 1090 1032 2.32 5.21 0.75 0.86
21 B2 893 846 0.26 4.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15667.3 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 14837.0 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 M06-2X/6-31G*
ABC
0.31790 0.31125 0.15727

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.153
C2 0.000 1.089 0.348
C3 0.000 -1.089 0.348
C4 0.000 0.717 -0.956
C5 0.000 -0.717 -0.956
H6 0.000 2.044 0.850
H7 0.000 -2.044 0.850
H8 0.000 1.375 -1.813
H9 0.000 -1.375 -1.813

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35431.35432.22822.22822.06592.06593.26923.2692
C21.35432.17781.35642.22791.07873.17242.17973.2770
C31.35432.17782.22791.35643.17241.07873.27702.1797
C42.22821.35642.22791.43442.24123.29941.07972.2605
C52.22822.22791.35641.43443.29942.24122.26051.0797
H62.06591.07873.17242.24123.29944.08712.74574.3332
H72.06593.17241.07873.29942.24124.08714.33322.7457
H83.26922.17973.27701.07972.26052.74574.33322.7495
H93.26923.27702.17972.26051.07974.33322.74572.7495

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.579 O1 C2 H6 115.772
O1 C3 C5 110.579 O1 C3 H7 115.772
C2 O1 C3 107.034 C2 C4 C5 105.904
C2 C4 H8 126.578 C3 C5 C4 105.904
C3 C5 H9 126.578 C4 C2 H6 133.649
C4 C5 H9 127.517 C5 C3 H7 133.649
C5 C4 H8 127.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.422      
2 C 0.065      
3 C 0.065      
4 C -0.217      
5 C -0.217      
6 H 0.187      
7 H 0.187      
8 H 0.176      
9 H 0.176      


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 -0.610 0.610
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.326 0.000 0.000
y 0.000 -23.513 0.000
z 0.000 0.000 -27.612
Traceless
 xyz
x -5.764 0.000 0.000
y 0.000 5.957 0.000
z 0.000 0.000 -0.192
Polar
3z2-r2-0.384
x2-y2-7.814
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.549 0.000 0.000
y 0.000 7.114 0.000
z 0.000 0.000 6.672


<r2> (average value of r2) Å2
<r2> 80.787
(<r2>)1/2 8.988