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All results from a given calculation for C4H6O (Furan, 2,3-dihydro-)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-229.848193
Energy at 298.15K-229.855286
Nuclear repulsion energy172.393580
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 B1B95/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3312 3169 3.87      
2 A 3279 3137 1.12      
3 A 3165 3028 30.14      
4 A 3116 2981 17.42      
5 A 3104 2969 27.35      
6 A 3075 2942 28.71      
7 A 1690 1617 37.92      
8 A 1562 1495 0.99      
9 A 1537 1471 0.64      
10 A 1399 1339 2.42      
11 A 1329 1271 10.49      
12 A 1311 1254 12.97      
13 A 1276 1221 4.40      
14 A 1211 1158 1.89      
15 A 1180 1129 25.86      
16 A 1078 1031 0.48      
17 A 1065 1019 74.83      
18 A 1002 959 0.90      
19 A 955 914 2.65      
20 A 928 888 14.07      
21 A 916 876 35.05      
22 A 846 809 0.75      
23 A 836 800 3.97      
24 A 746 714 52.35      
25 A 700 670 3.11      
26 A 455 435 28.08      
27 A 52 49 2.03      

Unscaled Zero Point Vibrational Energy (zpe) 20562.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19672.1 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 B1B95/3-21G
ABC
0.26415 0.25501 0.13658

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.073 2.062 0.036
C2 0.599 1.095 0.020
H3 2.267 -0.314 0.009
C4 1.214 -0.083 0.004
O5 0.381 -1.201 -0.030
H6 -1.339 1.280 -0.952
H7 -1.417 1.346 0.821
C8 -0.906 0.883 -0.028
H9 -1.556 -1.093 -0.813
H10 -1.448 -1.015 0.970
C11 -1.011 -0.672 0.031

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07662.65912.14973.33552.72142.70702.30464.19374.08643.4377
C21.07662.18381.32952.30672.17582.18371.52083.18233.09032.3909
H32.65912.18381.07782.08444.05824.12163.39163.98773.90133.2981
C42.14971.32951.07781.39443.04823.10392.33033.06012.98212.3025
O53.33552.30672.08441.39443.15623.23152.44882.09252.09301.4907
H62.72142.17584.05823.04823.15621.77581.09492.38672.99572.2097
H72.70702.18374.12163.10393.23151.77581.09382.93932.36662.2047
C82.30461.52083.39162.33032.44881.09491.09382.22322.21201.5593
H94.19373.18233.98773.06012.09252.38672.93932.22321.78811.0895
H104.08643.09033.90132.98212.09302.99572.36662.21201.78811.0911
C113.43772.39093.29812.30251.49072.20972.20471.55931.08951.0911

picture of Furan, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 126.296 H1 C2 C8 124.180
C2 C4 H3 129.944 C2 C4 O5 115.717
C2 C8 H6 111.535 C2 C8 H7 112.250
C2 C8 C11 101.830 H3 C4 O5 114.339
C4 C2 C8 109.505 C4 O5 C11 105.846
O5 C11 C8 106.795 O5 C11 H9 107.362
O5 C11 H10 107.309 H6 C8 H7 108.457
H6 C8 C11 111.523 H7 C8 C11 111.193
C8 C11 H9 112.938 C8 C11 H10 111.942
H9 C11 H10 110.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.206      
2 C -0.289      
3 H 0.237      
4 C 0.096      
5 O -0.491      
6 H 0.229      
7 H 0.228      
8 C -0.479      
9 H 0.231      
10 H 0.230      
11 C -0.197      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.824 1.176 0.058 1.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.718 1.179 0.040
y 1.179 -31.478 -0.065
z 0.040 -0.065 -31.032
Traceless
 xyz
x 5.537 1.179 0.040
y 1.179 -3.103 -0.065
z 0.040 -0.065 -2.434
Polar
3z2-r2-4.868
x2-y25.761
xy1.179
xz0.040
yz-0.065


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.539 -0.156 0.017
y -0.156 6.602 0.006
z 0.017 0.006 3.715


<r2> (average value of r2) Å2
<r2> 95.590
(<r2>)1/2 9.777