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 C4H6O (Furan, 2,5-dihydro-)

using model chemistry: BLYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-231.176307
Energy at 298.15K-231.183313
Nuclear repulsion energy172.430135
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/6-311G*
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 3130 3122 17.85      
2 A1 2895 2887 13.33      
3 A1 1628 1624 0.03      
4 A1 1500 1496 1.07      
5 A1 1350 1346 3.91      
6 A1 1091 1088 1.44      
7 A1 955 953 6.11      
8 A1 851 849 18.54      
9 A1 732 730 6.37      
10 A2 2896 2889 0.00      
11 A2 1188 1185 0.00      
12 A2 1031 1029 0.00      
13 A2 899 897 0.00      
14 A2 378 377 0.00      
15 B1 2898 2891 142.20      
16 B1 1135 1133 4.01      
17 B1 997 995 14.82      
18 B1 648 646 36.15      
19 B1 105 105 6.64      
20 B2 3107 3099 8.68      
21 B2 2887 2879 187.67      
22 B2 1487 1484 2.67      
23 B2 1328 1324 1.22      
24 B2 1294 1291 0.28      
25 B2 1029 1027 89.95      
26 B2 884 882 0.03      
27 B2 784 782 6.25      

Unscaled Zero Point Vibrational Energy (zpe) 19553.0 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 19504.1 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 BLYP/6-311G*
ABC
0.26279 0.25855 0.13713

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.206
C2 0.000 1.184 0.369
C3 0.000 0.669 -1.052
C4 0.000 -0.669 -1.052
C5 0.000 -1.184 0.369
H6 0.892 1.799 0.599
H7 -0.892 1.799 0.599
H8 -0.892 -1.799 0.599
H9 0.892 -1.799 0.599
H10 0.000 1.320 -1.927
H11 0.000 -1.320 -1.927

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.45002.35492.35491.45002.09772.09772.09772.09773.39953.3995
C21.45001.51162.33502.36811.10751.10753.12223.12222.29983.3971
C32.35491.51161.33752.33502.19092.19093.10043.10041.09052.1726
C42.35492.33501.33751.51163.10043.10042.19092.19092.17261.0905
C51.45002.36812.33501.51163.12223.12221.10751.10753.39712.2998
H62.09771.10752.19093.10043.12221.78364.01613.59832.72144.1116
H72.09771.10752.19093.10043.12221.78363.59834.01612.72144.1116
H82.09773.12223.10042.19091.10754.01613.59831.78364.11162.7214
H92.09773.12223.10042.19091.10753.59834.01611.78364.11162.7214
H103.39952.29981.09052.17263.39712.72142.72144.11164.11162.6399
H113.39953.39712.17261.09052.29984.11164.11162.72142.72142.6399

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 105.322 O1 C2 H6 109.480
O1 C2 H7 109.480 O1 C5 C4 105.322
O1 C5 H8 109.480 O1 C5 H9 109.480
C2 O1 C5 109.489 C2 C3 C4 109.934
C2 C3 H10 123.402 C3 C2 H6 112.631
C3 C2 H7 112.631 C3 C4 C5 109.934
C3 C4 H11 126.665 C4 C3 H10 126.665
C4 C5 H8 112.631 C4 C5 H9 112.631
C5 C4 H11 123.402 H6 C2 H7 107.259
H8 C5 H9 107.259
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.338      
2 C -0.187      
3 C -0.198      
4 C -0.198      
5 C -0.187      
6 H 0.187      
7 H 0.187      
8 H 0.187      
9 H 0.187      
10 H 0.181      
11 H 0.181      


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 -1.687 1.687
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.430 0.000 0.000
y 0.000 -26.476 0.000
z 0.000 0.000 -32.402
Traceless
 xyz
x -1.991 0.000 0.000
y 0.000 5.439 0.000
z 0.000 0.000 -3.448
Polar
3z2-r2-6.897
x2-y2-4.954
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.893 0.000 0.000
y 0.000 9.136 0.000
z 0.000 0.000 6.514


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000