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

using model chemistry: B3LYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-228.290122
Energy at 298.15K-228.296941
Nuclear repulsion energy169.865367
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 B3LYP/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3496 3120 0.97      
2 A' 3317 2960 17.65      
3 A' 3231 2883 1.34      
4 A' 1824 1628 0.23      
5 A' 1674 1494 0.16      
6 A' 1472 1314 0.53      
7 A' 1223 1092 0.12      
8 A' 1175 1048 0.09      
9 A' 1058 944 5.93      
10 A' 1048 936 2.90      
11 A' 943 842 0.43      
12 A' 762 680 0.91      
13 A' 715 638 18.57      
14 A' 51 46 5.87      
15 A" 3461 3088 17.85      
16 A" 3313 2956 0.34      
17 A" 3224 2877 28.90      
18 A" 1663 1484 4.73      
19 A" 1448 1292 2.25      
20 A" 1386 1237 0.09      
21 A" 1262 1126 0.01      
22 A" 1205 1075 23.71      
23 A" 1095 977 0.00      
24 A" 1004 896 0.00      
25 A" 983 877 0.11      
26 A" 832 742 0.12      
27 A" 397 354 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21630.1 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 19302.7 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 B3LYP/STO-3G
ABC
0.26007 0.24549 0.13284

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.067 -1.257 0.000
C2 -0.013 -0.368 1.189
C3 -0.013 1.077 0.667
C4 -0.013 1.077 -0.667
C5 -0.013 -0.368 -1.189
H6 0.854 -0.574 1.860
H7 -0.940 -0.593 1.774
H8 -0.940 -0.593 -1.774
H9 0.854 -0.574 -1.860
H10 -0.019 1.945 1.338
H11 -0.019 1.945 -1.338

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.48662.42912.42911.48662.13232.14492.14492.13233.47183.4718
C21.48661.53632.35242.37751.11591.11813.11183.17652.31843.4257
C32.42911.53631.33492.35242.21362.20643.09893.14111.09702.1850
C42.42912.35241.33491.53633.14113.09892.20642.21362.18501.0970
C51.48662.37752.35241.53633.17653.11181.11811.11593.42572.3184
H62.13231.11592.21363.14113.17651.79574.05233.72042.71694.1635
H72.14491.11812.20643.09893.11181.79573.54714.05232.73454.1191
H82.14493.11183.09892.20641.11814.05233.54711.79574.11912.7345
H92.13233.17653.14112.21361.11593.72044.05231.79574.16352.7169
H103.47182.31841.09702.18503.42572.71692.73454.11914.16352.6753
H113.47183.42572.18501.09702.31844.16354.11912.73452.71692.6753

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 106.932 O1 C2 H6 109.208
O1 C2 H7 110.061 O1 C5 C4 106.932
O1 C5 H8 110.061 O1 C5 H9 109.208
C2 O1 C5 106.192 C2 C3 C4 109.835
C2 C3 H10 122.504 C3 C2 H6 112.184
C3 C2 H7 111.473 C3 C4 C5 109.835
C3 C4 H11 127.659 C4 C3 H10 127.659
C4 C5 H8 111.473 C4 C5 H9 112.184
C5 C4 H11 122.504 H6 C2 H7 106.985
H8 C5 H9 106.985
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.194      
2 C -0.050      
3 C -0.088      
4 C -0.088      
5 C -0.050      
6 H 0.076      
7 H 0.074      
8 H 0.074      
9 H 0.076      
10 H 0.084      
11 H 0.084      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.120 1.349 0.000 1.355
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.343 0.136 0.000
y 0.136 -29.409 0.000
z 0.000 0.000 -24.895
Traceless
 xyz
x -1.191 0.136 0.000
y 0.136 -2.790 0.000
z 0.000 0.000 3.981
Polar
3z2-r27.963
x2-y21.066
xy0.136
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.037 -0.014 0.000
y -0.014 3.372 0.000
z 0.000 0.000 5.419


<r2> (average value of r2) Å2
<r2> 96.685
(<r2>)1/2 9.833