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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-229.897113
Energy at 298.15K-229.904239
Nuclear repulsion energy172.309158
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 mPW1PW91/3-21G
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 3317 3167 3.81      
2 A 3286 3137 0.75      
3 A 3172 3028 30.22      
4 A 3119 2978 15.70      
5 A 3115 2974 27.97      
6 A 3082 2942 28.39      
7 A 1696 1619 38.59      
8 A 1571 1500 1.06      
9 A 1544 1474 0.77      
10 A 1407 1343 2.52      
11 A 1337 1276 12.24      
12 A 1316 1256 14.54      
13 A 1288 1230 1.46      
14 A 1220 1164 1.82      
15 A 1186 1132 28.31      
16 A 1085 1036 0.26      
17 A 1072 1024 75.23      
18 A 1006 960 0.99      
19 A 963 919 2.68      
20 A 933 891 14.53      
21 A 917 875 37.02      
22 A 850 812 1.32      
23 A 844 806 1.68      
24 A 747 713 54.52      
25 A 713 680 3.24      
26 A 461 440 29.35      
27 A 57 54 2.06      

Unscaled Zero Point Vibrational Energy (zpe) 20651.7 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 19714.1 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 mPW1PW91/3-21G
ABC
0.26386 0.25482 0.13636

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.085 2.057 0.015
C2 0.605 1.093 0.008
H3 2.267 -0.325 0.004
C4 1.215 -0.090 0.002
O5 0.376 -1.202 -0.012
H6 -1.358 1.309 -0.914
H7 -1.388 1.336 0.862
C8 -0.903 0.888 -0.011
H9 -1.532 -1.065 -0.863
H10 -1.489 -1.034 0.925
C11 -1.016 -0.668 0.013

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07722.65912.15093.33622.71902.71252.30634.16754.12433.4414
C21.07722.18431.33042.30702.17952.18271.52183.15923.12272.3938
H32.65912.18431.07822.08484.08044.10563.39363.96563.93133.3003
C42.15091.33041.07821.39363.06793.09002.33213.03973.00862.3040
O53.33622.30702.08481.39363.18233.21222.45052.09312.09331.4904
H62.71902.17954.08043.06793.18231.77691.09542.38092.98192.2105
H72.71252.18274.10563.09003.21221.77691.09502.95952.37282.2085
C82.30631.52183.39362.33212.45051.09541.09502.22172.21721.5610
H94.16753.15923.96563.03972.09312.38092.95952.22171.78871.0906
H104.12433.12273.93133.00862.09332.98192.37282.21721.78871.0912
C113.44142.39383.30032.30401.49042.21052.20851.56101.09061.0912

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 126.277 H1 C2 C8 124.205
C2 C4 H3 129.857 C2 C4 O5 115.735
C2 C8 H6 111.731 C2 C8 H7 112.016
C2 C8 C11 101.873 H3 C4 O5 114.408
C4 C2 C8 109.516 C4 O5 C11 106.002
O5 C11 C8 106.827 O5 C11 H9 107.365
O5 C11 H10 107.346 H6 C8 H7 108.431
H6 C8 C11 111.436 H7 C8 C11 111.305
C8 C11 H9 112.623 C8 C11 H10 112.225
H9 C11 H10 110.139
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.215      
2 C -0.303      
3 H 0.246      
4 C 0.097      
5 O -0.501      
6 H 0.236      
7 H 0.236      
8 C -0.497      
9 H 0.237      
10 H 0.236      
11 C -0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.825 1.187 0.025 1.446
CHELPG        
AIM        
ESP        


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> 95.703
(<r2>)1/2 9.783