return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/TZVP
 hartrees
Energy at 0K-230.103758
Energy at 298.15K 
HF Energy-230.103758
Nuclear repulsion energy161.035305
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 B3LYPultrafine/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 3289 3169 0.05 200.97 0.13 0.23
2 A1 3259 3140 0.14 41.10 0.21 0.35
3 A1 1512 1457 18.97 46.59 0.15 0.26
4 A1 1414 1362 3.72 19.65 0.35 0.52
5 A1 1168 1125 0.05 27.25 0.20 0.33
6 A1 1084 1044 13.16 7.00 0.08 0.14
7 A1 1014 977 46.92 1.51 0.15 0.27
8 A1 890 857 15.99 0.98 0.73 0.84
9 A2 873 841 0.00 0.93 0.75 0.86
10 A2 734 707 0.00 0.00 0.75 0.86
11 A2 605 583 0.00 0.04 0.75 0.86
12 B1 847 816 0.04 0.31 0.75 0.86
13 B1 756 728 113.00 0.48 0.75 0.86
14 B1 620 597 23.63 1.28 0.75 0.86
15 B2 3283 3163 0.19 15.67 0.75 0.86
16 B2 3249 3130 2.38 91.61 0.75 0.86
17 B2 1594 1535 0.20 0.50 0.75 0.86
18 B2 1295 1248 0.15 0.65 0.75 0.86
19 B2 1195 1151 20.17 0.66 0.75 0.86
20 B2 1061 1022 1.51 4.76 0.75 0.86
21 B2 895 863 0.61 4.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15317.7 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 14757.1 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 B3LYPultrafine/TZVP
ABC
0.31605 0.31059 0.15665

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.158
C2 0.000 1.095 0.346
C3 0.000 -1.095 0.346
C4 0.000 0.717 -0.956
C5 0.000 -0.717 -0.956
H6 0.000 2.049 0.843
H7 0.000 -2.049 0.843
H8 0.000 1.370 -1.813
H9 0.000 -1.370 -1.813

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36361.36362.23272.23272.07312.07313.27183.2718
C21.36362.18981.35582.23081.07573.18292.17603.2763
C31.36362.18982.23081.35583.18291.07573.27632.1760
C42.23271.35582.23081.43312.23853.29911.07732.2555
C52.23272.23081.35581.43313.29912.23852.25551.0773
H62.07311.07573.18292.23853.29914.09792.74094.3290
H72.07313.18291.07573.29912.23854.09794.32902.7409
H83.27182.17603.27631.07732.25552.74094.32902.7398
H93.27183.27632.17602.25551.07734.32902.74092.7398

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.382 O1 C2 H6 115.901
O1 C3 C5 110.382 O1 C3 H7 115.901
C2 O1 C3 106.829 C2 C4 C5 106.203
C2 C4 H8 126.466 C3 C5 C4 106.203
C3 C5 H9 126.466 C4 C2 H6 133.717
C4 C5 H9 127.331 C5 C3 H7 133.717
C5 C4 H8 127.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.151      
2 C -0.055      
3 C -0.055      
4 C -0.135      
5 C -0.135      
6 H 0.131      
7 H 0.131      
8 H 0.135      
9 H 0.135      


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 -0.705 0.705
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.161 0.000 0.000
y 0.000 -24.287 0.000
z 0.000 0.000 -28.421
Traceless
 xyz
x -5.807 0.000 0.000
y 0.000 6.004 0.000
z 0.000 0.000 -0.197
Polar
3z2-r2-0.395
x2-y2-7.874
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.250 0.000 0.000
y 0.000 7.825 0.000
z 0.000 0.000 7.411


<r2> (average value of r2) Å2
<r2> 81.500
(<r2>)1/2 9.028