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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-231.176891
Energy at 298.15K-231.184043
Nuclear repulsion energy174.458890
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 mPW1PW91/6-31+G**
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 3270 3113 6.51      
2 A1 3026 2880 5.46      
3 A1 1714 1631 0.10      
4 A1 1532 1458 2.34      
5 A1 1405 1338 4.88      
6 A1 1125 1071 1.38      
7 A1 1010 961 8.97      
8 A1 938 892 24.54      
9 A1 760 724 6.69      
10 A2 3048 2902 0.00      
11 A2 1232 1173 0.00      
12 A2 1065 1013 0.00      
13 A2 957 910 0.00      
14 A2 395 376 0.00      
15 B1 3050 2903 82.36      
16 B1 1187 1130 2.84      
17 B1 1031 981 21.15      
18 B1 682 649 46.18      
19 B1 94 89 10.83      
20 B2 3247 3090 2.46      
21 B2 3020 2875 147.41      
22 B2 1521 1448 0.64      
23 B2 1389 1322 3.34      
24 B2 1333 1269 0.33      
25 B2 1155 1099 106.02      
26 B2 937 892 0.38      
27 B2 816 776 1.65      

Unscaled Zero Point Vibrational Energy (zpe) 20469.4 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 19482.8 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 mPW1PW91/6-31+G**
ABC
0.26844 0.26534 0.14049

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.182
C2 0.000 1.169 0.370
C3 0.000 0.665 -1.040
C4 0.000 -0.665 -1.040
C5 0.000 -1.169 0.370
H6 0.887 1.777 0.600
H7 -0.887 1.777 0.600
H8 -0.887 -1.777 0.600
H9 0.887 -1.777 0.600
H10 0.000 1.314 -1.907
H11 0.000 -1.314 -1.907

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.42332.31962.31961.42332.06952.06952.06952.06953.35723.3572
C21.42331.49772.31382.33811.09941.09943.08513.08512.28213.3695
C32.31961.49771.33032.31382.17082.17083.07243.07241.08312.1609
C42.31962.31381.33031.49773.07243.07242.17082.17082.16091.0831
C51.42332.33812.31381.49773.08513.08511.09941.09943.36952.2821
H62.06951.09942.17083.07243.08511.77373.97183.55382.69934.0776
H72.06951.09942.17083.07243.08511.77373.55383.97182.69934.0776
H82.06953.08513.07242.17081.09943.97183.55381.77374.07762.6993
H92.06953.08513.07242.17081.09943.55383.97181.77374.07762.6993
H103.35722.28211.08312.16093.36952.69932.69934.07764.07762.6284
H113.35723.36952.16091.08312.28214.07764.07762.69932.69932.6284

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 105.117 O1 C2 H6 109.571
O1 C2 H7 109.571 O1 C5 C4 105.117
O1 C5 H8 109.571 O1 C5 H9 109.571
C2 O1 C5 110.447 C2 C3 C4 109.660
C2 C3 H10 123.525 C3 C2 H6 112.501
C3 C2 H7 112.501 C3 C4 C5 109.660
C3 C4 H11 126.815 C4 C3 H10 126.815
C4 C5 H8 112.501 C4 C5 H9 112.501
C5 C4 H11 123.525 H6 C2 H7 107.542
H8 C5 H9 107.542
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.328      
2 C -0.279      
3 C -0.039      
4 C -0.039      
5 C -0.279      
6 H 0.158      
7 H 0.158      
8 H 0.158      
9 H 0.158      
10 H 0.166      
11 H 0.166      


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 -1.783 1.783
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.328 0.000 0.000
y 0.000 -25.823 0.000
z 0.000 0.000 -32.407
Traceless
 xyz
x -2.213 0.000 0.000
y 0.000 6.045 0.000
z 0.000 0.000 -3.832
Polar
3z2-r2-7.664
x2-y2-5.505
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.510 0.000 0.000
y 0.000 9.029 0.000
z 0.000 0.000 6.588


<r2> (average value of r2) Å2
<r2> 94.106
(<r2>)1/2 9.701