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All results from a given calculation for C4H4O (Furan)

using model chemistry: M06-2X/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-229.943597
Energy at 298.15K 
HF Energy-229.943597
Nuclear repulsion energy161.729818
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(2df,p)
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 3320 3162 0.00 209.22 0.12 0.21
2 A1 3294 3138 0.02 19.48 0.50 0.67
3 A1 1552 1478 20.85 31.73 0.20 0.33
4 A1 1437 1369 3.83 14.43 0.35 0.52
5 A1 1184 1128 1.96 26.74 0.24 0.39
6 A1 1123 1070 18.34 6.59 0.22 0.37
7 A1 1030 981 32.30 0.76 0.61 0.76
8 A1 894 852 14.23 0.16 0.62 0.76
9 A2 903 860 0.00 0.58 0.75 0.86
10 A2 777 740 0.00 2.10 0.75 0.86
11 A2 623 593 0.00 0.08 0.75 0.86
12 B1 871 830 0.19 0.08 0.75 0.86
13 B1 790 752 79.44 0.80 0.75 0.86
14 B1 637 607 20.08 2.03 0.75 0.86
15 B2 3312 3154 0.85 7.05 0.75 0.86
16 B2 3284 3128 1.54 105.53 0.75 0.86
17 B2 1636 1558 1.03 0.32 0.75 0.86
18 B2 1291 1229 1.78 0.48 0.75 0.86
19 B2 1266 1205 18.42 1.03 0.75 0.86
20 B2 1082 1031 2.11 4.81 0.75 0.86
21 B2 892 850 0.33 3.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15599.0 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 14856.5 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(2df,p)
ABC
0.31935 0.31264 0.15798

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.150
C2 0.000 1.085 0.348
C3 0.000 -1.085 0.348
C4 0.000 0.717 -0.955
C5 0.000 -0.717 -0.955
H6 0.000 2.039 0.849
H7 0.000 -2.039 0.849
H8 0.000 1.374 -1.808
H9 0.000 -1.374 -1.808

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35001.35002.22352.22352.06092.06093.26183.2618
C21.35002.17101.35342.22341.07693.16412.17483.2705
C31.35002.17102.22341.35343.16411.07693.27052.1748
C42.22351.35342.22341.43332.23593.29291.07722.2582
C52.22352.22341.35341.43333.29292.23592.25821.0772
H62.06091.07693.16412.23593.29294.07742.73844.3249
H72.06093.16411.07693.29292.23594.07744.32492.7384
H83.26182.17483.27051.07722.25822.73844.32492.7482
H93.26183.27052.17482.25821.07724.32492.73842.7482

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.666 O1 C2 H6 115.796
O1 C3 C5 110.666 O1 C3 H7 115.796
C2 O1 C3 107.038 C2 C4 C5 105.815
C2 C4 H8 126.572 C3 C5 C4 105.815
C3 C5 H9 126.572 C4 C2 H6 133.538
C4 C5 H9 127.613 C5 C3 H7 133.538
C5 C4 H8 127.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.208      
2 C 0.025      
3 C 0.025      
4 C -0.218      
5 C -0.218      
6 H 0.159      
7 H 0.159      
8 H 0.138      
9 H 0.138      


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 -0.524 0.524
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.074 0.000 0.000
y 0.000 -23.668 0.000
z 0.000 0.000 -27.425
Traceless
 xyz
x -5.528 0.000 0.000
y 0.000 5.581 0.000
z 0.000 0.000 -0.054
Polar
3z2-r2-0.108
x2-y2-7.406
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.101 0.000 0.000
y 0.000 7.396 0.000
z 0.000 0.000 6.857


<r2> (average value of r2) Å2
<r2> 80.445
(<r2>)1/2 8.969