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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-230.035381
Energy at 298.15K 
HF Energy-230.035381
Nuclear repulsion energy159.737499
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/daug-cc-pVTZ
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 3204 3204 0.03 215.31 0.12 0.22
2 A1 3173 3173 0.93 49.74 0.22 0.36
3 A1 1450 1450 15.79 62.38 0.11 0.19
4 A1 1362 1362 3.62 21.62 0.30 0.46
5 A1 1128 1128 0.00 32.51 0.13 0.23
6 A1 1043 1043 3.58 8.35 0.04 0.08
7 A1 974 974 43.50 3.53 0.15 0.26
8 A1 857 857 16.05 0.07 0.72 0.84
9 A2 856 856 0.00 0.31 0.75 0.86
10 A2 696 696 0.00 1.80 0.75 0.86
11 A2 598 598 0.00 0.03 0.75 0.86
12 B1 818 818 0.29 1.57 0.75 0.86
13 B1 730 730 109.45 0.08 0.75 0.86
14 B1 602 602 18.51 0.73 0.75 0.86
15 B2 3198 3198 0.42 18.77 0.75 0.86
16 B2 3163 3163 2.72 100.01 0.75 0.86
17 B2 1531 1531 0.03 0.04 0.75 0.86
18 B2 1253 1253 0.12 0.55 0.75 0.86
19 B2 1137 1137 18.07 0.75 0.75 0.86
20 B2 1013 1013 0.27 4.76 0.75 0.86
21 B2 866 866 0.93 1.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14825.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14825.2 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 BLYP/daug-cc-pVTZ
ABC
0.31131 0.30527 0.15413

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.172
C2 0.000 1.105 0.346
C3 0.000 -1.105 0.346
C4 0.000 0.720 -0.964
C5 0.000 -0.720 -0.964
H6 0.000 2.063 0.846
H7 0.000 -2.063 0.846
H8 0.000 1.375 -1.825
H9 0.000 -1.375 -1.825

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37981.37982.25332.25332.08862.08863.29713.2971
C21.37982.21101.36532.24641.08053.20792.18783.2963
C31.37982.21102.24641.36533.20791.08053.29632.1878
C42.25331.36532.24641.43942.25423.31971.08222.2646
C52.25332.24641.36531.43943.31972.25422.26461.0822
H62.08861.08053.20792.25423.31974.12632.75894.3539
H72.08863.20791.08053.31972.25424.12634.35392.7589
H83.29712.18783.29631.08222.26462.75894.35392.7493
H93.29713.29632.18782.26461.08224.35392.75892.7493

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.340 O1 C2 H6 115.655
O1 C3 C5 110.340 O1 C3 H7 115.655
C2 O1 C3 106.491 C2 C4 C5 106.415
C2 C4 H8 126.342 C3 C5 C4 106.415
C3 C5 H9 126.342 C4 C2 H6 134.006
C4 C5 H9 127.243 C5 C3 H7 134.006
C5 C4 H8 127.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.669      
2 C -0.634      
3 C -0.634      
4 C -0.667      
5 C -0.667      
6 H 1.034      
7 H 1.034      
8 H 0.601      
9 H 0.601      


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 -0.670 0.670
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.270 0.000 0.000
y 0.000 -24.978 0.000
z 0.000 0.000 -28.770
Traceless
 xyz
x -5.396 0.000 0.000
y 0.000 5.542 0.000
z 0.000 0.000 -0.146
Polar
3z2-r2-0.293
x2-y2-7.292
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.375 0.000 0.000
y 0.000 9.116 0.000
z 0.000 0.000 8.247


<r2> (average value of r2) Å2
<r2> 82.740
(<r2>)1/2 9.096