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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-231.144363
Energy at 298.15K-231.151494
Nuclear repulsion energy174.344119
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 B3PW91/6-31G**
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 3281 3144 7.43      
2 A 3250 3115 3.46      
3 A 3127 2997 37.91      
4 A 3084 2956 31.45      
5 A 3059 2932 38.95      
6 A 3036 2910 45.59      
7 A 1710 1639 60.06      
8 A 1529 1465 0.16      
9 A 1503 1441 0.11      
10 A 1419 1360 4.63      
11 A 1331 1275 2.60      
12 A 1308 1254 7.94      
13 A 1252 1200 6.32      
14 A 1215 1165 13.47      
15 A 1181 1132 75.24      
16 A 1107 1061 36.16      
17 A 1074 1030 2.67      
18 A 1023 981 6.96      
19 A 954 914 27.99      
20 A 946 907 26.47      
21 A 919 880 2.94      
22 A 849 814 0.75      
23 A 840 805 4.68      
24 A 721 691 32.75      
25 A 696 667 2.50      
26 A 454 435 22.46      
27 A 78 75 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 20473.5 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 19621.8 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 B3PW91/6-31G**
ABC
0.27145 0.26012 0.14022

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.991 2.101 0.071
C2 0.542 1.117 0.039
H3 2.264 -0.240 0.016
C4 1.198 -0.043 0.007
O5 0.420 -1.158 -0.059
H6 -1.362 1.181 -1.003
H7 -1.519 1.299 0.748
C8 -0.936 0.831 -0.053
H9 -1.532 -1.204 -0.721
H10 -1.322 -1.043 1.037
C11 -0.950 -0.710 0.061

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.08112.66512.15413.31112.74472.72042.31114.23254.02053.4155
C21.08112.19241.33292.28112.17152.18781.50893.20473.02342.3594
H32.66512.19241.08352.06124.02544.14913.37503.98493.81393.2480
C42.15411.33291.08351.36223.01233.11992.30713.05532.90082.2503
O53.31112.28112.06121.36223.08873.23272.40732.06132.06141.4462
H62.74472.17154.02543.01233.08871.76281.09872.40853.01872.2091
H72.72042.18784.14913.11993.23271.76281.09612.90282.36792.1983
C82.31111.50893.37502.30712.40731.09871.09612.22322.20181.5449
H94.23253.20473.98493.05532.06132.40852.90282.22321.77781.0931
H104.02053.02343.81392.90082.06143.01872.36792.20181.77781.0963
C113.41552.35943.24802.25031.44622.20912.19831.54491.09311.0963

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 126.013 H1 C2 C8 125.523
C2 C4 H3 129.979 C2 C4 O5 115.632
C2 C8 H6 111.800 C2 C8 H7 113.299
C2 C8 C11 101.169 H3 C4 O5 114.386
C4 C2 C8 108.393 C4 O5 C11 106.459
O5 C11 C8 107.134 O5 C11 H9 107.730
O5 C11 H10 107.547 H6 C8 H7 106.862
H6 C8 C11 112.259 H7 C8 C11 111.552
C8 C11 H9 113.762 C8 C11 H10 111.821
H9 C11 H10 108.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.121      
2 C -0.201      
3 H 0.135      
4 C 0.169      
5 O -0.481      
6 H 0.140      
7 H 0.139      
8 C -0.298      
9 H 0.138      
10 H 0.136      
11 C 0.002      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.743 0.887 0.095 1.161
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> 93.801
(<r2>)1/2 9.685