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

using model chemistry: BLYP/3-21G

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/3-21G
 hartrees
Energy at 0K-229.848017
Energy at 298.15K-229.855032
Nuclear repulsion energy170.006444
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/3-21G
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 3165 3148 10.25      
2 A1 2919 2903 10.28      
3 A1 1627 1618 0.09      
4 A1 1543 1534 0.34      
5 A1 1331 1324 0.06      
6 A1 1123 1117 1.23      
7 A1 937 932 5.62      
8 A1 808 804 6.57      
9 A1 713 709 4.99      
10 A2 2926 2910 0.00      
11 A2 1171 1164 0.00      
12 A2 1045 1039 0.00      
13 A2 928 923 0.00      
14 A2 376 374 0.00      
15 B1 2931 2915 119.03      
16 B1 1124 1117 12.32      
17 B1 982 976 5.34      
18 B1 669 666 37.97      
19 B1 121 120 7.92      
20 B2 3138 3121 2.76      
21 B2 2910 2894 139.70      
22 B2 1528 1519 4.99      
23 B2 1332 1324 2.96      
24 B2 1287 1280 1.45      
25 B2 986 980 62.72      
26 B2 866 861 0.23      
27 B2 780 776 7.20      

Unscaled Zero Point Vibrational Energy (zpe) 19631.6 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19523.6 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/3-21G
ABC
0.25535 0.25075 0.13301

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.245
C2 0.000 1.209 0.365
C3 0.000 0.671 -1.064
C4 0.000 -0.671 -1.064
C5 0.000 -1.209 0.365
H6 0.898 1.822 0.574
H7 -0.898 1.822 0.574
H8 -0.898 -1.822 0.574
H9 0.898 -1.822 0.574
H10 0.000 1.323 -1.936
H11 0.000 -1.323 -1.936

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.49502.40382.40381.49502.13952.13952.13952.13953.44463.4446
C21.49501.52632.36052.41701.10801.10803.16823.16822.30343.4205
C32.40381.52631.34152.36052.19462.19463.11543.11541.08892.1759
C42.40382.36051.34151.52633.11543.11542.19462.19462.17591.0889
C51.49502.41702.36051.52633.16823.16821.10801.10803.42052.3034
H62.13951.10802.19463.11543.16821.79644.06353.64492.71254.1231
H72.13951.10802.19463.11543.16821.79643.64494.06352.71254.1231
H82.13953.16823.11542.19461.10804.06353.64491.79644.12312.7125
H92.13953.16823.11542.19461.10803.64494.06351.79644.12312.7125
H103.44462.30341.08892.17593.42052.71252.71254.12314.12312.6455
H113.44463.42052.17591.08892.30344.12314.12312.71252.71252.6455

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 105.429 O1 C2 H6 109.665
O1 C2 H7 109.665 O1 C5 C4 105.429
O1 C5 H8 109.665 O1 C5 H9 109.665
C2 O1 C5 107.879 C2 C3 C4 110.631
C2 C3 H10 122.589 C3 C2 H6 111.860
C3 C2 H7 111.860 C3 C4 C5 110.631
C3 C4 H11 126.780 C4 C3 H10 126.780
C4 C5 H8 111.860 C4 C5 H9 111.860
C5 C4 H11 122.589 H6 C2 H7 108.322
H8 C5 H9 108.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.429      
2 C -0.151      
3 C -0.173      
4 C -0.173      
5 C -0.151      
6 H 0.185      
7 H 0.185      
8 H 0.185      
9 H 0.185      
10 H 0.169      
11 H 0.169      


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 -1.805 1.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.255 0.000 0.000
y 0.000 -25.642 0.000
z 0.000 0.000 -32.043
Traceless
 xyz
x -2.413 0.000 0.000
y 0.000 6.007 0.000
z 0.000 0.000 -3.595
Polar
3z2-r2-7.189
x2-y2-5.613
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.940 0.000 0.000
y 0.000 8.456 0.000
z 0.000 0.000 5.678


<r2> (average value of r2) Å2
<r2> 97.835
(<r2>)1/2 9.891