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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-231.181199
Energy at 298.15K-231.188436
Nuclear repulsion energy174.694287
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 mPW1PW91/6-31+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 A 3299 3140 5.59      
2 A 3272 3114 1.16      
3 A 3160 3007 28.02      
4 A 3112 2962 25.00      
5 A 3075 2927 43.65      
6 A 3051 2904 40.49      
7 A 1703 1621 72.15      
8 A 1526 1453 1.08      
9 A 1502 1430 1.05      
10 A 1420 1352 6.14      
11 A 1339 1275 2.68      
12 A 1314 1250 7.76      
13 A 1256 1195 10.86      
14 A 1221 1162 23.02      
15 A 1182 1125 77.17      
16 A 1112 1058 34.38      
17 A 1080 1028 5.01      
18 A 1028 979 8.80      
19 A 961 915 26.72      
20 A 952 906 33.18      
21 A 927 883 4.30      
22 A 857 816 3.31      
23 A 843 802 5.68      
24 A 725 690 53.28      
25 A 685 652 2.06      
26 A 461 438 22.87      
27 A 127 121 1.27      

Unscaled Zero Point Vibrational Energy (zpe) 20593.9 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 19601.3 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 mPW1PW91/6-31+G**
ABC
0.27200 0.26150 0.14129

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.004 2.088 0.106
C2 0.547 1.110 0.055
H3 2.259 -0.260 0.025
C4 1.198 -0.053 0.011
O5 0.405 -1.156 -0.088
H6 -1.311 1.149 -1.056
H7 -1.538 1.328 0.683
C8 -0.929 0.832 -0.078
H9 -1.576 -1.220 -0.636
H10 -1.263 -0.985 1.101
C11 -0.953 -0.698 0.091

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.08032.66362.15193.30412.75502.71482.31264.26023.94653.4045
C21.08032.19281.33332.27492.16552.18871.50833.22742.96052.3498
H32.66362.19281.08172.06213.98764.16783.37154.00833.75353.2422
C42.15191.33331.08171.36132.97963.13702.30503.07782.84792.2463
O53.30412.27492.06211.36133.03273.24642.39382.05662.05551.4440
H62.75502.16553.98762.97963.03271.76361.09752.42133.03572.2041
H72.71482.18874.16783.13703.24641.76361.09372.86992.36722.1907
C82.31261.50833.37152.30502.39381.09751.09372.22272.19181.5393
H94.26023.22744.00833.07782.05662.42132.86992.22271.78051.0904
H103.94652.96053.75352.84792.05553.03572.36722.19181.78051.0952
C113.40452.34983.24222.24631.44402.20412.19071.53931.09041.0952

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 125.816 H1 C2 C8 125.798
C2 C4 H3 130.161 C2 C4 O5 115.169
C2 C8 H6 111.435 C2 C8 H7 113.564
C2 C8 C11 100.891 H3 C4 O5 114.660
C4 C2 C8 108.259 C4 O5 C11 106.356
O5 C11 C8 106.674 O5 C11 H9 107.656
O5 C11 H10 107.293 H6 C8 H7 107.189
H6 C8 C11 112.337 H7 C8 C11 111.491
C8 C11 H9 114.309 C8 C11 H10 111.484
H9 C11 H10 109.099
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.165      
2 C 0.000      
3 H 0.166      
4 C -0.135      
5 O -0.285      
6 H 0.178      
7 H 0.176      
8 C -0.429      
9 H 0.166      
10 H 0.165      
11 C -0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.867 1.000 0.113 1.328
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> 93.840
(<r2>)1/2 9.687