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

using model chemistry: HF/CEP-31G*

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-31G*
 hartrees
Energy at 0K-41.097559
Energy at 298.15K-41.104908
Nuclear repulsion energy94.003510
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-31G*
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 3425 3075 17.07      
2 A1 3225 2896 19.05      
3 A1 1848 1659 0.22      
4 A1 1667 1497 0.33      
5 A1 1547 1389 22.49      
6 A1 1196 1074 0.62      
7 A1 1064 955 25.43      
8 A1 1009 906 19.13      
9 A1 798 717 7.40      
10 A2 3251 2919 0.00      
11 A2 1325 1190 0.00      
12 A2 1151 1034 0.00      
13 A2 1049 942 0.00      
14 A2 399 358 0.00      
15 B1 3256 2924 178.78      
16 B1 1293 1161 1.76      
17 B1 1128 1013 41.44      
18 B1 756 679 46.46      
19 B1 107 97 14.91      
20 B2 3393 3047 9.81      
21 B2 3219 2891 212.45      
22 B2 1656 1487 4.62      
23 B2 1507 1353 2.61      
24 B2 1432 1286 0.62      
25 B2 1268 1139 140.40      
26 B2 987 886 0.01      
27 B2 860 772 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 21907.4 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 19672.8 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-31G*
ABC
0.26784 0.26218 0.13940

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.179
C2 0.000 1.171 0.382
C3 0.000 0.669 -1.052
C4 0.000 -0.669 -1.052
C5 0.000 -1.171 0.382
H6 0.884 1.770 0.611
H7 -0.884 1.770 0.611
H8 -0.884 -1.770 0.611
H9 0.884 -1.770 0.611
H10 0.000 1.320 -1.913
H11 0.000 -1.320 -1.913

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.41632.32932.32931.41632.05872.05872.05872.05873.36173.3617
C21.41631.51882.33262.34101.09281.09283.07943.07942.29913.3864
C32.32931.51881.33892.33262.18172.18173.08233.08231.07892.1679
C42.32932.33261.33891.51883.08233.08232.18172.18172.16791.0789
C51.41632.34102.33261.51883.07943.07941.09281.09283.38642.2991
H62.05871.09282.18173.08233.07941.76853.95763.54052.71174.0869
H72.05871.09282.18173.08233.07941.76853.54053.95762.71174.0869
H82.05873.07943.08232.18171.09283.95763.54051.76854.08692.7117
H92.05873.07943.08232.18171.09283.54053.95761.76854.08692.7117
H103.36172.29911.07892.16793.38642.71172.71174.08694.08692.6407
H113.36173.38642.16791.07892.29914.08694.08692.71172.71172.6407

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 104.998 O1 C2 H6 109.596
O1 C2 H7 109.596 O1 C5 C4 104.998
O1 C5 H8 109.596 O1 C5 H9 109.596
C2 O1 C5 111.478 C2 C3 C4 109.263
C2 C3 H10 123.633 C3 C2 H6 112.288
C3 C2 H7 112.288 C3 C4 C5 109.263
C3 C4 H11 127.104 C4 C3 H10 127.104
C4 C5 H8 112.288 C4 C5 H9 112.288
C5 C4 H11 123.633 H6 C2 H7 108.027
H8 C5 H9 108.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.369      
2 C -0.049      
3 C -0.267      
4 C -0.267      
5 C -0.049      
6 H 0.114      
7 H 0.114      
8 H 0.114      
9 H 0.114      
10 H 0.274      
11 H 0.274      


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 -1.887 1.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.147 0.000 0.000
y 0.000 -25.350 0.000
z 0.000 0.000 -32.499
Traceless
 xyz
x -2.223 0.000 0.000
y 0.000 6.473 0.000
z 0.000 0.000 -4.250
Polar
3z2-r2-8.501
x2-y2-5.798
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.132 0.000 0.000
y 0.000 8.120 0.000
z 0.000 0.000 5.587


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