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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBE1PBE/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 PBE1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-229.788284
Energy at 298.15K 
HF Energy-229.788284
Nuclear repulsion energy161.002777
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 PBE1PBE/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 3314 3186 0.03 218.42 0.11 0.20
2 A1 3285 3159 0.01 30.82 0.30 0.46
3 A1 1536 1477 21.68 69.73 0.10 0.19
4 A1 1431 1376 1.44 14.31 0.39 0.56
5 A1 1173 1128 0.87 36.42 0.11 0.20
6 A1 1105 1063 12.93 5.68 0.17 0.29
7 A1 1019 979 43.57 1.26 0.27 0.43
8 A1 886 852 12.47 0.15 0.57 0.73
9 A2 872 838 0.00 0.51 0.75 0.86
10 A2 736 708 0.00 1.30 0.75 0.86
11 A2 615 591 0.00 0.03 0.75 0.86
12 B1 846 813 1.17 1.64 0.75 0.86
13 B1 758 729 112.33 0.03 0.75 0.86
14 B1 627 603 24.48 0.81 0.75 0.86
15 B2 3307 3180 0.07 11.53 0.75 0.86
16 B2 3274 3148 2.05 97.29 0.75 0.86
17 B2 1612 1551 0.00 0.19 0.75 0.86
18 B2 1274 1225 0.41 0.63 0.75 0.86
19 B2 1229 1182 17.07 0.04 0.75 0.86
20 B2 1062 1021 3.53 5.28 0.75 0.86
21 B2 887 853 0.81 2.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15422.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 14830.2 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 PBE1PBE/aug-cc-pVDZ
ABC
0.31699 0.30956 0.15662

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.156
C2 0.000 1.090 0.350
C3 0.000 -1.090 0.350
C4 0.000 0.716 -0.959
C5 0.000 -0.716 -0.959
H6 0.000 2.052 0.850
H7 0.000 -2.052 0.850
H8 0.000 1.380 -1.818
H9 0.000 -1.380 -1.818

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35641.35642.23342.23342.07492.07493.27873.2787
C21.35642.18091.36112.23101.08383.18212.18673.2863
C31.35642.18092.23101.36113.18211.08383.28632.1867
C42.23341.36112.23101.43272.24843.30691.08522.2652
C52.23342.23101.36111.43273.30692.24842.26521.0852
H62.07491.08383.18212.24843.30694.10422.75094.3466
H72.07493.18211.08383.30692.24844.10424.34662.7509
H83.27872.18673.28631.08522.26522.75094.34662.7595
H93.27873.28632.18672.26521.08524.34662.75092.7595

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 107.012 C2 C4 C5 105.954
C2 C4 H8 126.362 C3 C5 C4 105.954
C3 C5 H9 126.362 C4 C2 H6 133.426
C4 C5 H9 127.684 C5 C3 H7 133.426
C5 C4 H8 127.684
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.408      
2 C 0.247      
3 C 0.247      
4 C 0.769      
5 C 0.769      
6 H -0.408      
7 H -0.408      
8 H -0.405      
9 H -0.405      


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 -0.613 0.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.163 0.000 0.000
y 0.000 -24.298 0.000
z 0.000 0.000 -28.045
Traceless
 xyz
x -5.991 0.000 0.000
y 0.000 5.806 0.000
z 0.000 0.000 0.185
Polar
3z2-r20.370
x2-y2-7.865
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.118 0.000 0.000
y 0.000 8.591 0.000
z 0.000 0.000 7.850


<r2> (average value of r2) Å2
<r2> 81.505
(<r2>)1/2 9.028