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All results from a given calculation for C4H4O (Furan)

using model chemistry: B1B95/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-229.959343
Energy at 298.15K 
HF Energy-229.959343
Nuclear repulsion energy161.337846
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/aug-cc-pVDZ
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 3319 3179 0.03 219.14 0.11 0.20
2 A1 3290 3151 0.11 31.94 0.29 0.45
3 A1 1541 1476 22.77 68.85 0.10 0.19
4 A1 1435 1375 1.22 13.99 0.39 0.56
5 A1 1175 1126 1.07 36.20 0.11 0.20
6 A1 1107 1060 13.75 5.70 0.18 0.31
7 A1 1020 977 42.80 1.22 0.29 0.45
8 A1 881 844 12.34 0.18 0.53 0.69
9 A2 873 836 0.00 0.53 0.75 0.86
10 A2 739 708 0.00 1.11 0.75 0.86
11 A2 614 588 0.00 0.03 0.75 0.86
12 B1 848 812 1.30 1.48 0.75 0.86
13 B1 759 727 108.30 0.03 0.75 0.86
14 B1 625 599 23.75 0.82 0.75 0.86
15 B2 3312 3173 0.31 12.11 0.75 0.86
16 B2 3278 3140 2.25 98.02 0.75 0.86
17 B2 1619 1551 0.00 0.18 0.75 0.86
18 B2 1276 1222 0.36 0.66 0.75 0.86
19 B2 1233 1181 17.80 0.03 0.75 0.86
20 B2 1064 1019 3.07 5.22 0.75 0.86
21 B2 883 846 0.80 2.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15445.2 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 14794.9 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/aug-cc-pVDZ
ABC
0.31825 0.31091 0.15727

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.154
C2 0.000 1.088 0.349
C3 0.000 -1.088 0.349
C4 0.000 0.715 -0.957
C5 0.000 -0.715 -0.957
H6 0.000 2.048 0.847
H7 0.000 -2.048 0.847
H8 0.000 1.377 -1.814
H9 0.000 -1.377 -1.814

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35421.35422.22882.22882.07082.07083.27163.2716
C21.35422.17681.35782.22621.08133.17572.18133.2790
C31.35422.17682.22621.35783.17571.08133.27902.1813
C42.22881.35782.22621.42972.24303.29951.08272.2602
C52.22882.22621.35781.42973.29952.24302.26021.0827
H62.07081.08133.17572.24303.29954.09582.74414.3367
H72.07083.17571.08133.29952.24304.09584.33672.7441
H83.27162.18133.27901.08272.26022.74414.33672.7534
H93.27163.27902.18132.26021.08274.33672.74412.7534

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.540 O1 C2 H6 116.034
O1 C3 C5 110.540 O1 C3 H7 116.034
C2 O1 C3 106.980 C2 C4 C5 105.970
C2 C4 H8 126.343 C3 C5 C4 105.970
C3 C5 H9 126.343 C4 C2 H6 133.426
C4 C5 H9 127.686 C5 C3 H7 133.426
C5 C4 H8 127.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.355      
2 C 0.281      
3 C 0.281      
4 C 0.825      
5 C 0.825      
6 H -0.466      
7 H -0.466      
8 H -0.462      
9 H -0.462      


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 -0.621 0.621
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.980 0.000 0.000
y 0.000 -24.275 0.000
z 0.000 0.000 -28.031
Traceless
 xyz
x -5.828 0.000 0.000
y 0.000 5.730 0.000
z 0.000 0.000 0.097
Polar
3z2-r20.195
x2-y2-7.705
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.061 0.000 0.000
y 0.000 8.545 0.000
z 0.000 0.000 7.808


<r2> (average value of r2) Å2
<r2> 81.190
(<r2>)1/2 9.011