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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-229.972617
Energy at 298.15K 
HF Energy-229.972617
Nuclear repulsion energy158.882106
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/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 3212 3206 0.04 224.84 0.12 0.22
2 A1 3179 3173 0.89 51.49 0.22 0.36
3 A1 1449 1446 16.30 66.35 0.11 0.19
4 A1 1358 1356 2.43 15.18 0.38 0.55
5 A1 1120 1118 0.00 33.61 0.13 0.24
6 A1 1041 1039 3.33 8.88 0.07 0.13
7 A1 967 965 45.54 3.51 0.15 0.26
8 A1 852 851 14.47 0.09 0.75 0.85
9 A2 819 818 0.00 0.20 0.75 0.86
10 A2 681 680 0.00 1.33 0.75 0.86
11 A2 592 591 0.00 0.00 0.75 0.86
12 B1 786 784 0.13 1.67 0.75 0.86
13 B1 715 713 111.47 0.07 0.75 0.86
14 B1 598 596 20.65 0.80 0.75 0.86
15 B2 3206 3200 0.35 20.22 0.75 0.86
16 B2 3168 3162 2.87 103.13 0.75 0.86
17 B2 1525 1522 0.07 0.08 0.75 0.86
18 B2 1234 1232 0.05 0.65 0.75 0.86
19 B2 1133 1131 17.78 0.52 0.75 0.86
20 B2 1006 1004 0.87 5.21 0.75 0.86
21 B2 858 856 0.82 2.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14748.5 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 14720.4 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/aug-cc-pVDZ
ABC
0.30846 0.30165 0.15251

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.176
C2 0.000 1.110 0.350
C3 0.000 -1.110 0.350
C4 0.000 0.723 -0.970
C5 0.000 -0.723 -0.970
H6 0.000 2.075 0.856
H7 0.000 -2.075 0.856
H8 0.000 1.385 -1.838
H9 0.000 -1.385 -1.838

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.38371.38372.26492.26492.09972.09973.31763.3176
C21.38372.21951.37542.25861.08993.22482.20533.3186
C31.38372.21952.25861.37543.22481.08993.31862.2053
C42.26491.37542.25861.44602.27193.34111.09202.2802
C52.26492.25861.37541.44603.34112.27192.28021.0920
H62.09971.08993.22482.27193.34114.15032.78074.3855
H72.09973.22481.08993.34112.27194.15034.38552.7807
H83.31762.20533.31861.09202.28022.78074.38552.7710
H93.31763.31862.20532.28021.09204.38552.78072.7710

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.346 O1 C2 H6 115.669
O1 C3 C5 110.346 O1 C3 H7 115.669
C2 O1 C3 106.647 C2 C4 C5 106.331
C2 C4 H8 126.318 C3 C5 C4 106.331
C3 C5 H9 126.318 C4 C2 H6 133.985
C4 C5 H9 127.351 C5 C3 H7 133.985
C5 C4 H8 127.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.268      
2 C 0.228      
3 C 0.228      
4 C 1.201      
5 C 1.201      
6 H -0.654      
7 H -0.654      
8 H -0.641      
9 H -0.641      


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 -0.669 0.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.381 0.000 0.000
y 0.000 -25.024 0.000
z 0.000 0.000 -28.884
Traceless
 xyz
x -5.427 0.000 0.000
y 0.000 5.609 0.000
z 0.000 0.000 -0.182
Polar
3z2-r2-0.364
x2-y2-7.357
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.371 0.000 0.000
y 0.000 9.174 0.000
z 0.000 0.000 8.333


<r2> (average value of r2) Å2
<r2> 83.520
(<r2>)1/2 9.139