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All results from a given calculation for C4H6O (Furan, 2,5-dihydro-)

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-228.012303
Energy at 298.15K-228.019051
Nuclear repulsion energy169.372896
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 PBEPBE/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3429 3133 0.76      
2 A' 3231 2952 17.79      
3 A' 3140 2868 5.97      
4 A' 1775 1621 0.26      
5 A' 1629 1488 0.45      
6 A' 1430 1306 0.26      
7 A' 1188 1085 0.50      
8 A' 1143 1044 0.27      
9 A' 1038 948 2.73      
10 A' 1023 934 4.00      
11 A' 917 837 0.90      
12 A' 742 678 1.74      
13 A' 686 627 20.56      
14 A' 73 66 5.41      
15 A" 3395 3102 15.50      
16 A" 3226 2948 1.82      
17 A" 3130 2859 38.79      
18 A" 1618 1478 4.45      
19 A" 1411 1289 2.10      
20 A" 1343 1227 0.03      
21 A" 1226 1120 0.07      
22 A" 1154 1055 25.19      
23 A" 1064 972 0.01      
24 A" 964 880 0.21      
25 A" 962 878 0.07      
26 A" 808 739 0.33      
27 A" 388 354 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 21064.0 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 19244.1 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 PBEPBE/STO-3G
ABC
0.25871 0.24412 0.13244

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.139 -1.258 0.000
C2 -0.028 -0.368 1.188
C3 -0.028 1.077 0.672
C4 -0.028 1.077 -0.672
C5 -0.028 -0.368 -1.188
H6 0.809 -0.570 1.908
H7 -0.987 -0.603 1.731
H8 -0.987 -0.603 -1.731
H9 0.809 -0.570 -1.908
H10 -0.045 1.952 1.343
H11 -0.045 1.952 -1.343

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.49302.43502.43501.49302.13562.16562.16562.13563.48403.4840
C21.49301.53472.35522.37541.12221.12653.08073.21302.32563.4334
C32.43501.53471.34362.35522.22302.20553.08463.17311.10282.1965
C42.43502.35521.34361.53473.17313.08462.20552.22302.19651.1028
C51.49302.37542.35521.53473.21303.08071.12651.12223.43342.3256
H62.13561.12222.22303.17313.21301.80424.05743.81602.72224.2023
H72.16561.12652.20553.08463.08071.80423.46124.05742.75074.1064
H82.16563.08073.08462.20551.12654.05743.46121.80424.10642.7507
H92.13563.21303.17312.22301.12223.81604.05741.80424.20232.7222
H103.48402.32561.10282.19653.43342.72222.75074.10644.20232.6858
H113.48403.43342.19651.10282.32564.20234.10642.75072.72222.6858

picture of Furan, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 107.066 O1 C2 H6 108.665
O1 C2 H7 110.750 O1 C5 C4 107.066
O1 C5 H8 110.750 O1 C5 H9 108.665
C2 O1 C5 105.405 C2 C3 C4 109.643
C2 C3 H10 122.862 C3 C2 H6 112.663
C3 C2 H7 111.011 C3 C4 C5 109.643
C3 C4 H11 127.485 C4 C3 H10 127.485
C4 C5 H8 111.011 C4 C5 H9 112.663
C5 C4 H11 122.862 H6 C2 H7 106.703
H8 C5 H9 106.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.170      
2 C -0.068      
3 C -0.095      
4 C -0.095      
5 C -0.068      
6 H 0.082      
7 H 0.077      
8 H 0.077      
9 H 0.082      
10 H 0.089      
11 H 0.089      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.238 1.228 0.000 1.251
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.338 0.236 0.000
y 0.236 -29.085 0.000
z 0.000 0.000 -24.790
Traceless
 xyz
x -1.401 0.236 0.000
y 0.236 -2.521 0.000
z 0.000 0.000 3.921
Polar
3z2-r27.842
x2-y20.747
xy0.236
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.050 -0.038 0.000
y -0.038 3.433 0.000
z 0.000 0.000 5.445


<r2> (average value of r2) Å2
<r2> 96.967
(<r2>)1/2 9.847