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

using model chemistry: LSDA/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 LSDA/6-31+G**
 hartrees
Energy at 0K-229.983260
Energy at 298.15K-229.990245
Nuclear repulsion energy174.733798
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 LSDA/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 3176 3128 2.88      
2 A1 2909 2866 2.60      
3 A1 1669 1644 0.02      
4 A1 1452 1431 4.65      
5 A1 1338 1318 2.31      
6 A1 1078 1062 1.97      
7 A1 998 983 5.68      
8 A1 927 913 26.87      
9 A1 750 738 6.77      
10 A2 2924 2880 0.00      
11 A2 1179 1161 0.00      
12 A2 1013 997 0.00      
13 A2 906 892 0.00      
14 A2 387 381 0.00      
15 B1 2925 2881 74.72      
16 B1 1126 1109 4.12      
17 B1 978 963 16.22      
18 B1 645 635 45.50      
19 B1 64 63 9.09      
20 B2 3153 3106 0.52      
21 B2 2903 2859 145.08      
22 B2 1441 1420 0.05      
23 B2 1335 1314 2.07      
24 B2 1267 1248 1.31      
25 B2 1139 1122 100.37      
26 B2 916 902 1.67      
27 B2 796 784 1.46      

Unscaled Zero Point Vibrational Energy (zpe) 19695.8 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 19400.3 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 LSDA/6-31+G**
ABC
0.26885 0.26753 0.14134

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.177
C2 0.000 1.163 0.368
C3 0.000 0.667 -1.034
C4 0.000 -0.667 -1.034
C5 0.000 -1.163 0.368
H6 0.894 1.784 0.598
H7 -0.894 1.784 0.598
H8 -0.894 -1.784 0.598
H9 0.894 -1.784 0.598
H10 0.000 1.322 -1.909
H11 0.000 -1.322 -1.909

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.41642.30872.30871.41642.07752.07752.07752.07753.35733.3573
C21.41641.48642.30492.32551.11261.11263.08783.08782.28283.3704
C32.30871.48641.33432.30492.16992.16993.07723.07721.09362.1734
C42.30872.30491.33431.48643.07723.07722.16992.16992.17341.0936
C51.41642.32552.30491.48643.08783.08781.11261.11263.37042.2828
H62.07751.11262.16993.07723.08781.78783.99063.56782.70194.0907
H72.07751.11262.16993.07723.08781.78783.56783.99062.70194.0907
H82.07753.08783.07722.16991.11263.99063.56781.78784.09072.7019
H92.07753.08783.07722.16991.11263.56783.99061.78784.09072.7019
H103.35732.28281.09362.17343.37042.70192.70194.09074.09072.6441
H113.35733.37042.17341.09362.28284.09074.09072.70192.70192.6441

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 105.345 O1 C2 H6 109.883
O1 C2 H7 109.883 O1 C5 C4 105.345
O1 C5 H8 109.883 O1 C5 H9 109.883
C2 O1 C5 110.356 C2 C3 C4 109.477
C2 C3 H10 123.736 C3 C2 H6 112.415
C3 C2 H7 112.415 C3 C4 C5 109.477
C3 C4 H11 126.787 C4 C3 H10 126.787
C4 C5 H8 112.415 C4 C5 H9 112.415
C5 C4 H11 123.736 H6 C2 H7 106.913
H8 C5 H9 106.913
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.285      
2 C -0.349      
3 C -0.024      
4 C -0.024      
5 C -0.349      
6 H 0.175      
7 H 0.175      
8 H 0.175      
9 H 0.175      
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 -1.720 1.720
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.659 0.000 0.000
y 0.000 -26.300 0.000
z 0.000 0.000 -32.611
Traceless
 xyz
x -2.203 0.000 0.000
y 0.000 5.835 0.000
z 0.000 0.000 -3.632
Polar
3z2-r2-7.264
x2-y2-5.359
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.841 0.000 0.000
y 0.000 9.556 0.000
z 0.000 0.000 6.987


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000