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

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-41.006701
Energy at 298.15K-41.014197
Nuclear repulsion energy93.389896
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 HF/CEP-121G
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 3388 3092 14.93      
2 A1 3186 2907 14.35      
3 A1 1791 1634 0.01      
4 A1 1667 1521 1.22      
5 A1 1507 1375 4.33      
6 A1 1216 1109 1.52      
7 A1 1048 956 16.22      
8 A1 958 874 24.59      
9 A1 796 727 8.78      
10 A2 3232 2949 0.00      
11 A2 1299 1186 0.00      
12 A2 1173 1070 0.00      
13 A2 1065 972 0.00      
14 A2 429 391 0.00      
15 B1 3237 2954 122.86      
16 B1 1269 1158 4.70      
17 B1 1135 1036 34.87      
18 B1 771 704 58.71      
19 B1 154 140 19.47      
20 B2 3356 3062 4.68      
21 B2 3180 2902 148.84      
22 B2 1658 1513 0.42      
23 B2 1485 1355 2.57      
24 B2 1446 1319 0.33      
25 B2 1198 1093 114.97      
26 B2 991 904 0.32      
27 B2 872 796 2.02      

Unscaled Zero Point Vibrational Energy (zpe) 21752.3 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 19849.0 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 HF/CEP-121G
ABC
0.26133 0.26086 0.13722

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.193
C2 0.000 1.199 0.373
C3 0.000 0.667 -1.050
C4 0.000 -0.667 -1.050
C5 0.000 -1.199 0.373
H6 0.883 1.786 0.604
H7 -0.883 1.786 0.604
H8 -0.883 -1.786 0.604
H9 0.883 -1.786 0.604
H10 0.000 1.306 -1.912
H11 0.000 -1.306 -1.912

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.45262.33992.33991.45262.07752.07752.07752.07753.36823.3682
C21.45261.51902.34652.39801.08521.08523.12163.12162.28703.3906
C32.33991.51901.33392.34652.18382.18383.08783.08781.07312.1533
C42.33992.34651.33391.51903.08783.08782.18382.18382.15331.0731
C51.45262.39802.34651.51903.12163.12161.08521.08523.39062.2870
H62.07751.08522.18383.08783.12161.76553.98493.57252.70924.0834
H72.07751.08522.18383.08783.12161.76553.57253.98492.70924.0834
H82.07753.12163.08782.18381.08523.98493.57251.76554.08342.7092
H92.07753.12163.08782.18381.08523.57253.98491.76554.08342.7092
H103.36822.28701.07312.15333.39062.70922.70924.08344.08342.6129
H113.36823.39062.15331.07312.28704.08344.08342.70922.70922.6129

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 103.868 O1 C2 H6 109.035
O1 C2 H7 109.035 O1 C5 C4 103.868
O1 C5 H8 109.035 O1 C5 H9 109.035
C2 O1 C5 111.258 C2 C3 C4 110.503
C2 C3 H10 122.915 C3 C2 H6 112.919
C3 C2 H7 112.919 C3 C4 C5 110.503
C3 C4 H11 126.581 C4 C3 H10 126.581
C4 C5 H8 112.919 C4 C5 H9 112.919
C5 C4 H11 122.915 H6 C2 H7 108.862
H8 C5 H9 108.862
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.442      
2 C -0.127      
3 C -0.140      
4 C -0.140      
5 C -0.127      
6 H 0.146      
7 H 0.146      
8 H 0.146      
9 H 0.146      
10 H 0.196      
11 H 0.196      


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 -2.372 2.372
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.572 0.000 0.000
y 0.000 -25.081 0.000
z 0.000 0.000 -33.923
Traceless
 xyz
x -2.070 0.000 0.000
y 0.000 7.667 0.000
z 0.000 0.000 -5.597
Polar
3z2-r2-11.193
x2-y2-6.491
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.584 0.000 0.000
y 0.000 8.731 0.000
z 0.000 0.000 5.695


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