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

using model chemistry: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-229.839292
Energy at 298.15K-229.846539
HF Energy-229.839292
Nuclear repulsion energy171.996277
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 M06-2X/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 3301 3126 2.46      
2 A1 3078 2915 6.80      
3 A1 1708 1618 0.90      
4 A1 1589 1505 0.27      
5 A1 1391 1318 0.05      
6 A1 1163 1101 1.92      
7 A1 982 930 6.40      
8 A1 902 854 11.68      
9 A1 749 709 6.67      
10 A2 3103 2939 0.00      
11 A2 1236 1171 0.00      
12 A2 1096 1038 0.00      
13 A2 1018 964 0.00      
14 A2 388 368 0.00      
15 B1 3108 2943 66.02      
16 B1 1195 1132 7.79      
17 B1 1042 987 18.27      
18 B1 736 697 44.05      
19 B1 141 134 12.39      
20 B2 3275 3102 0.04      
21 B2 3073 2911 76.81      
22 B2 1574 1491 1.15      
23 B2 1382 1309 3.50      
24 B2 1347 1276 0.34      
25 B2 1117 1058 73.35      
26 B2 916 868 0.01      
27 B2 826 783 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 20716.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 19622.5 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 M06-2X/3-21G*
ABC
0.26091 0.25697 0.13617

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.218
C2 0.000 1.196 0.369
C3 0.000 0.664 -1.054
C4 0.000 -0.664 -1.054
C5 0.000 -1.196 0.369
H6 0.892 1.797 0.581
H7 -0.892 1.797 0.581
H8 -0.892 -1.797 0.581
H9 0.892 -1.797 0.581
H10 0.000 1.311 -1.920
H11 0.000 -1.311 -1.920

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.46652.36672.36671.46652.10512.10512.10512.10513.40033.4003
C21.46651.51892.34202.39181.09641.09643.13053.13052.29163.3945
C32.36671.51891.32852.34202.17982.17983.08673.08671.08072.1567
C42.36672.34201.32851.51893.08673.08672.17982.17982.15671.0807
C51.46652.39182.34201.51893.13053.13051.09641.09643.39452.2916
H62.10511.09642.17983.08673.13051.78364.01303.59482.69904.0878
H72.10511.09642.17983.08673.13051.78363.59484.01302.69904.0878
H82.10513.13053.08672.17981.09644.01303.59481.78364.08782.6990
H92.10513.13053.08672.17981.09643.59484.01301.78364.08782.6990
H103.40032.29161.08072.15673.39452.69902.69904.08784.08782.6220
H113.40033.39452.15671.08072.29164.08784.08782.69902.69902.6220

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 104.874 O1 C2 H6 109.607
O1 C2 H7 109.607 O1 C5 C4 104.874
O1 C5 H8 109.607 O1 C5 H9 109.607
C2 O1 C5 109.275 C2 C3 C4 110.488
C2 C3 H10 122.755 C3 C2 H6 111.905
C3 C2 H7 111.905 C3 C4 C5 110.488
C3 C4 H11 126.757 C4 C3 H10 126.757
C4 C5 H8 111.905 C4 C5 H9 111.905
C5 C4 H11 122.755 H6 C2 H7 108.864
H8 C5 H9 108.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.514      
2 C -0.147      
3 C -0.235      
4 C -0.235      
5 C -0.147      
6 H 0.212      
7 H 0.212      
8 H 0.212      
9 H 0.212      
10 H 0.215      
11 H 0.215      


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 -2.009 2.009
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.339 0.000 0.000
y 0.000 -25.188 0.000
z 0.000 0.000 -32.411
Traceless
 xyz
x -2.539 0.000 0.000
y 0.000 6.687 0.000
z 0.000 0.000 -4.147
Polar
3z2-r2-8.295
x2-y2-6.151
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.732 0.000 0.000
y 0.000 7.951 0.000
z 0.000 0.000 5.290


<r2> (average value of r2) Å2
<r2> 96.059
(<r2>)1/2 9.801