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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/Def2TZVPP
 hartrees
Energy at 0K-230.039926
Energy at 298.15K 
HF Energy-230.039926
Nuclear repulsion energy159.772576
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 BLYP/Def2TZVPP
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 3210 3210 0.02 220.29 0.12 0.22
2 A1 3180 3180 1.13 47.57 0.21 0.35
3 A1 1453 1453 14.68 42.34 0.14 0.25
4 A1 1366 1366 3.89 16.05 0.35 0.52
5 A1 1129 1129 0.00 28.07 0.18 0.30
6 A1 1047 1047 3.63 8.17 0.09 0.17
7 A1 977 977 42.44 2.82 0.11 0.20
8 A1 859 859 16.43 0.46 0.75 0.86
9 A2 848 848 0.00 0.65 0.75 0.86
10 A2 693 693 0.00 0.06 0.75 0.86
11 A2 598 598 0.00 0.02 0.75 0.86
12 B1 810 810 0.39 0.27 0.75 0.86
13 B1 726 726 105.09 0.35 0.75 0.86
14 B1 604 604 19.41 1.09 0.75 0.86
15 B2 3204 3204 0.80 18.57 0.75 0.86
16 B2 3169 3169 2.82 99.88 0.75 0.86
17 B2 1533 1533 0.05 0.31 0.75 0.86
18 B2 1254 1254 0.12 0.57 0.75 0.86
19 B2 1141 1141 17.81 1.28 0.75 0.86
20 B2 1015 1015 0.46 4.15 0.75 0.86
21 B2 867 867 0.62 3.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14841.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14841.5 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 BLYP/Def2TZVPP
ABC
0.31160 0.30526 0.15420

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.171
C2 0.000 1.105 0.347
C3 0.000 -1.105 0.347
C4 0.000 0.720 -0.964
C5 0.000 -0.720 -0.964
H6 0.000 2.063 0.847
H7 0.000 -2.063 0.847
H8 0.000 1.375 -1.826
H9 0.000 -1.375 -1.826

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37841.37842.25292.25292.08802.08803.29703.2970
C21.37842.20941.36592.24621.08093.20672.18913.2965
C31.37842.20942.24621.36593.20671.08093.29652.1891
C42.25291.36592.24621.43912.25483.31981.08262.2647
C52.25292.24621.36591.43913.31982.25482.26471.0826
H62.08801.08093.20672.25483.31984.12542.76004.3544
H72.08803.20671.08093.31982.25484.12544.35442.7600
H83.29702.18913.29651.08262.26472.76004.35442.7496
H93.29703.29652.18912.26471.08264.35442.76002.7496

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.356 O1 C2 H6 115.681
O1 C3 C5 110.356 O1 C3 H7 115.681
C2 O1 C3 106.535 C2 C4 C5 106.377
C2 C4 H8 126.378 C3 C5 C4 106.377
C3 C5 H9 126.378 C4 C2 H6 133.964
C4 C5 H9 127.245 C5 C3 H7 133.964
C5 C4 H8 127.245
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.218      
2 C -0.011      
3 C -0.011      
4 C -0.160      
5 C -0.160      
6 H 0.150      
7 H 0.150      
8 H 0.130      
9 H 0.130      


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 -0.630 0.630
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.137 0.000 0.000
y 0.000 -24.752 0.000
z 0.000 0.000 -28.538
Traceless
 xyz
x -5.492 0.000 0.000
y 0.000 5.586 0.000
z 0.000 0.000 -0.094
Polar
3z2-r2-0.187
x2-y2-7.385
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.571 0.000 0.000
y 0.000 8.452 0.000
z 0.000 0.000 7.803


<r2> (average value of r2) Å2
<r2> 82.594
(<r2>)1/2 9.088