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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBE1PBE/daug-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/daug-cc-pVDZ
 hartrees
Energy at 0K-229.789475
Energy at 298.15K 
HF Energy-229.789475
Nuclear repulsion energy161.021190
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/daug-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 3313 3313 0.03 215.10 0.11 0.20
2 A1 3284 3284 0.01 31.79 0.29 0.45
3 A1 1535 1535 21.96 72.45 0.11 0.19
4 A1 1431 1431 1.31 14.55 0.38 0.55
5 A1 1173 1173 0.86 37.16 0.10 0.19
6 A1 1106 1106 12.94 5.66 0.15 0.27
7 A1 1020 1020 43.13 1.36 0.27 0.43
8 A1 886 886 12.50 0.11 0.55 0.71
9 A2 882 882 0.00 0.44 0.75 0.86
10 A2 735 735 0.00 1.47 0.75 0.86
11 A2 614 614 0.00 0.06 0.75 0.86
12 B1 855 855 0.80 1.63 0.75 0.86
13 B1 762 762 112.12 0.03 0.75 0.86
14 B1 628 628 24.02 0.86 0.75 0.86
15 B2 3306 3306 0.08 12.11 0.75 0.86
16 B2 3273 3273 2.10 98.10 0.75 0.86
17 B2 1612 1612 0.00 0.15 0.75 0.86
18 B2 1271 1271 0.43 0.61 0.75 0.86
19 B2 1228 1228 17.00 0.03 0.75 0.86
20 B2 1062 1062 3.25 5.10 0.75 0.86
21 B2 887 887 0.84 2.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15431.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15431.1 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/daug-cc-pVDZ
ABC
0.31705 0.30962 0.15664

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/daug-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 2.051 0.850
H7 0.000 -2.051 0.850
H8 0.000 1.379 -1.817
H9 0.000 -1.379 -1.817

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35641.35642.23332.23332.07402.07403.27793.2779
C21.35642.18091.36102.23091.08313.18122.18603.2857
C31.35642.18092.23091.36103.18121.08313.28572.1860
C42.23331.36102.23091.43262.24793.30611.08452.2647
C52.23332.23091.36101.43263.30612.24792.26471.0845
H62.07401.08313.18122.24793.30614.10252.75014.3453
H72.07403.18121.08313.30612.24794.10254.34532.7501
H83.27792.18603.28571.08452.26472.75014.34532.7589
H93.27793.28572.18602.26471.08454.34532.75012.7589

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.536 O1 C2 H6 116.017
O1 C3 C5 110.536 O1 C3 H7 116.017
C2 O1 C3 107.017 C2 C4 C5 105.956
C2 C4 H8 126.350 C3 C5 C4 105.956
C3 C5 H9 126.350 C4 C2 H6 133.447
C4 C5 H9 127.694 C5 C3 H7 133.447
C5 C4 H8 127.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.246      
2 C 0.487      
3 C 0.487      
4 C 1.316      
5 C 1.316      
6 H -0.803      
7 H -0.803      
8 H -0.876      
9 H -0.876      


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 -0.605 0.605
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.155 0.000 0.000
y 0.000 -24.315 0.000
z 0.000 0.000 -28.043
Traceless
 xyz
x -5.976 0.000 0.000
y 0.000 5.784 0.000
z 0.000 0.000 0.192
Polar
3z2-r20.385
x2-y2-7.840
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.157 0.000 0.000
y 0.000 8.675 0.000
z 0.000 0.000 7.891


<r2> (average value of r2) Å2
<r2> 81.489
(<r2>)1/2 9.027