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

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at G3B3
 hartrees
Energy at 0K-231.045566
Energy at 298.15K-231.039938
Nuclear repulsion energy 
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/6-31G*
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 3271 3141 9.75      
2 A 3245 3117 3.64      
3 A 3120 2996 43.07      
4 A 3071 2949 56.35      
5 A 3057 2936 20.36      
6 A 3028 2908 47.12      
7 A 1704 1636 57.92      
8 A 1551 1489 0.03      
9 A 1528 1467 0.24      
10 A 1426 1370 3.71      
11 A 1336 1283 1.74      
12 A 1319 1267 9.26      
13 A 1260 1210 3.80      
14 A 1220 1172 5.59      
15 A 1179 1132 65.30      
16 A 1100 1056 51.69      
17 A 1085 1042 7.06      
18 A 1014 974 5.31      
19 A 939 902 24.29      
20 A 937 900 30.44      
21 A 914 878 2.73      
22 A 848 815 1.48      
23 A 840 806 3.50      
24 A 719 691 29.02      
25 A 701 673 3.09      
26 A 452 434 21.38      
27 A 64 62 1.46      

Unscaled Zero Point Vibrational Energy (zpe) 20464.6 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 19652.2 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/6-31G*
ABC
0.26944 0.25865 0.13910

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.023 2.090 0.057
C2 0.561 1.112 0.030
H3 2.264 -0.273 0.013
C4 1.202 -0.057 0.006
O5 0.406 -1.168 -0.047
H6 -1.367 1.218 -0.979
H7 -1.489 1.315 0.777
C8 -0.928 0.848 -0.042
H9 -1.533 -1.173 -0.758
H10 -1.366 -1.048 1.008
C11 -0.966 -0.700 0.049

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.08172.66982.15513.31772.74642.72602.31454.22424.05703.4269
C21.08172.19511.33342.28692.17902.19191.51413.19843.05562.3705
H32.66982.19511.08362.06294.04884.14653.38373.97783.84263.2587
C42.15511.33341.08361.36793.03283.11782.31503.05162.92932.2624
O53.31772.28692.06291.36793.11593.23102.41802.06582.06611.4534
H62.74642.17904.04883.03283.11591.76331.09922.40733.01452.2133
H72.72602.19194.14653.11783.23101.76331.09722.92362.37752.2058
C82.31451.51413.38372.31502.41801.09921.09722.22822.21161.5519
H94.22423.19843.97783.05162.06582.40732.92362.22821.77851.0933
H104.05703.05563.84262.92932.06613.01452.37752.21161.77851.0959
C113.42692.37053.25872.26241.45342.21332.20581.55191.09331.0959

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 126.030 H1 C2 C8 125.317
C2 C4 H3 130.204 C2 C4 O5 115.691
C2 C8 H6 112.033 C2 C8 H7 113.162
C2 C8 C11 101.280 H3 C4 O5 114.103
C4 C2 C8 108.610 C4 O5 C11 106.603
O5 C11 C8 107.095 O5 C11 H9 107.560
O5 C11 H10 107.447 H6 C8 H7 106.802
H6 C8 C11 112.089 H7 C8 C11 111.579
C8 C11 H9 113.641 C8 C11 H10 112.149
H9 C11 H10 108.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.132 0.123   0.132
2 C -0.193 -0.341   -0.336
3 H 0.147 0.114   0.133
4 C 0.138 0.067   0.031
5 O -0.467 -0.296   -0.289
6 H 0.151 -0.046   -0.022
7 H 0.150 -0.053   -0.031
8 C -0.326 0.291   0.222
9 H 0.153 0.036   0.037
10 H 0.150 0.036   0.041
11 C -0.036 0.070   0.082


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.718 0.915 0.077 1.165
CHELPG -0.704 0.863 0.079 1.116
AIM        
ESP -0.745 0.859 0.089 1.140


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 94.453
(<r2>)1/2 9.719