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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBE1PBE/TZVP

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/TZVP
 hartrees
Energy at 0K-229.833624
Energy at 298.15K 
HF Energy-229.833624
Nuclear repulsion energy161.631884
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/TZVP
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 3307 3173 0.02 206.97 0.12 0.22
2 A1 3280 3147 0.01 29.06 0.28 0.43
3 A1 1535 1473 21.19 47.61 0.15 0.25
4 A1 1432 1374 2.76 17.31 0.36 0.53
5 A1 1178 1131 0.47 29.19 0.18 0.30
6 A1 1112 1067 17.80 6.14 0.13 0.23
7 A1 1027 985 44.55 0.89 0.20 0.34
8 A1 894 858 13.60 0.93 0.71 0.83
9 A2 876 841 0.00 0.95 0.75 0.86
10 A2 744 714 0.00 0.01 0.75 0.86
11 A2 607 582 0.00 0.05 0.75 0.86
12 B1 854 820 0.02 0.27 0.75 0.86
13 B1 763 732 114.98 0.46 0.75 0.86
14 B1 629 604 24.30 1.24 0.75 0.86
15 B2 3300 3166 0.04 10.75 0.75 0.86
16 B2 3269 3137 1.81 92.64 0.75 0.86
17 B2 1614 1549 0.27 0.52 0.75 0.86
18 B2 1294 1241 0.34 0.73 0.75 0.86
19 B2 1231 1181 19.10 0.25 0.75 0.86
20 B2 1074 1031 4.05 4.84 0.75 0.86
21 B2 896 859 0.50 4.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15456.9 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 14832.5 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 PBE1PBE/TZVP
ABC
0.31910 0.31229 0.15783

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.153
C2 0.000 1.088 0.347
C3 0.000 -1.088 0.347
C4 0.000 0.714 -0.954
C5 0.000 -0.714 -0.954
H6 0.000 2.043 0.845
H7 0.000 -2.043 0.845
H8 0.000 1.371 -1.810
H9 0.000 -1.371 -1.810

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35351.35352.22462.22462.06612.06613.26423.2642
C21.35352.17521.35382.22251.07733.16992.17543.2703
C31.35352.17522.22251.35383.16991.07733.27032.1754
C42.22461.35382.22251.42832.23653.29211.07852.2535
C52.22462.22251.35381.42833.29212.23652.25351.0785
H62.06611.07733.16992.23653.29214.08612.73844.3243
H72.06613.16991.07733.29212.23654.08614.32432.7384
H83.26422.17543.27031.07852.25352.73844.32432.7412
H93.26423.27032.17542.25351.07854.32432.73842.7412

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.514 O1 C2 H6 115.959
O1 C3 C5 110.514 O1 C3 H7 115.959
C2 O1 C3 106.943 C2 C4 C5 106.014
C2 C4 H8 126.490 C3 C5 C4 106.014
C3 C5 H9 126.490 C4 C2 H6 133.527
C4 C5 H9 127.496 C5 C3 H7 133.527
C5 C4 H8 127.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.108      
2 C -0.081      
3 C -0.081      
4 C -0.134      
5 C -0.134      
6 H 0.131      
7 H 0.131      
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 -0.638 0.638
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.018 0.000 0.000
y 0.000 -23.984 0.000
z 0.000 0.000 -27.997
Traceless
 xyz
x -6.027 0.000 0.000
y 0.000 6.023 0.000
z 0.000 0.000 0.004
Polar
3z2-r20.008
x2-y2-8.034
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.207 0.000 0.000
y 0.000 7.709 0.000
z 0.000 0.000 7.310


<r2> (average value of r2) Å2
<r2> 80.885
(<r2>)1/2 8.994