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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-229.861647
Energy at 298.15K-229.868823
Nuclear repulsion energy171.959661
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 B3PW91/3-21G
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 3263 3136 5.40      
2 A1 3022 2905 9.13      
3 A1 1696 1630 0.63      
4 A1 1575 1514 0.53      
5 A1 1376 1322 0.14      
6 A1 1153 1108 1.95      
7 A1 980 942 6.57      
8 A1 873 839 9.51      
9 A1 743 714 6.40      
10 A2 3042 2924 0.00      
11 A2 1218 1171 0.00      
12 A2 1079 1037 0.00      
13 A2 977 939 0.00      
14 A2 389 374 0.00      
15 B1 3048 2929 94.49      
16 B1 1174 1128 11.20      
17 B1 1019 979 10.08      
18 B1 702 674 48.97      
19 B1 126 121 10.47      
20 B2 3235 3109 0.98      
21 B2 3015 2898 114.08      
22 B2 1560 1500 1.55      
23 B2 1369 1316 3.32      
24 B2 1332 1280 0.68      
25 B2 1073 1031 74.01      
26 B2 908 873 0.01      
27 B2 817 785 2.52      

Unscaled Zero Point Vibrational Energy (zpe) 20380.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 19589.6 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 B3PW91/3-21G
ABC
0.26090 0.25708 0.13621

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.222
C2 0.000 1.194 0.365
C3 0.000 0.666 -1.052
C4 0.000 -0.666 -1.052
C5 0.000 -1.194 0.365
H6 0.892 1.801 0.575
H7 -0.892 1.801 0.575
H8 -0.892 -1.801 0.575
H9 0.892 -1.801 0.575
H10 0.000 1.313 -1.919
H11 0.000 -1.313 -1.919

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.46942.36912.36911.46942.11182.11182.11182.11183.40443.4044
C21.46941.51262.33802.38791.09981.09983.13263.13262.28763.3918
C32.36911.51261.33112.33802.17582.17583.08713.08711.08232.1603
C42.36912.33801.33111.51263.08713.08712.17582.17582.16031.0823
C51.46942.38792.33801.51263.13263.13261.09981.09983.39182.2876
H62.11181.09982.17583.08713.13261.78494.02083.60292.69394.0888
H72.11181.09982.17583.08713.13261.78493.60294.02082.69394.0888
H82.11183.13263.08712.17581.09984.02083.60291.78494.08882.6939
H92.11183.13263.08712.17581.09983.60294.02081.78494.08882.6939
H103.40442.28761.08232.16033.39182.69392.69394.08884.08882.6261
H113.40443.39182.16031.08232.28764.08884.08882.69392.69392.6261

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 105.205 O1 C2 H6 109.732
O1 C2 H7 109.732 O1 C5 C4 105.205
O1 C5 H8 109.732 O1 C5 H9 109.732
C2 O1 C5 108.696 C2 C3 C4 110.447
C2 C3 H10 122.806 C3 C2 H6 111.824
C3 C2 H7 111.824 C3 C4 C5 110.447
C3 C4 H11 126.746 C4 C3 H10 126.746
C4 C5 H8 111.824 C4 C5 H9 111.824
C5 C4 H11 122.806 H6 C2 H7 108.480
H8 C5 H9 108.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.486      
2 C -0.188      
3 C -0.233      
4 C -0.233      
5 C -0.188      
6 H 0.222      
7 H 0.222      
8 H 0.222      
9 H 0.222      
10 H 0.220      
11 H 0.220      


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 -1.934 1.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.172 0.000 0.000
y 0.000 -25.057 0.000
z 0.000 0.000 -31.984
Traceless
 xyz
x -2.651 0.000 0.000
y 0.000 6.521 0.000
z 0.000 0.000 -3.869
Polar
3z2-r2-7.739
x2-y2-6.115
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.853 0.000 0.000
y 0.000 8.173 0.000
z 0.000 0.000 5.429


<r2> (average value of r2) Å2
<r2> 95.915
(<r2>)1/2 9.794