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All results from a given calculation for C4H8O2 (1,3-Dioxolane, 2-methyl-)

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-302.000254
Energy at 298.15K-302.010701
Nuclear repulsion energy259.458620
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 HF/STO-3G
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 3768 3077 0.01      
2 A 3764 3073 0.00      
3 A 3699 3020 4.57      
4 A 3692 3015 0.35      
5 A 3578 2922 0.47      
6 A 3578 2921 5.30      
7 A 3572 2916 2.44      
8 A 3516 2871 23.15      
9 A 1831 1495 1.11      
10 A 1816 1483 0.74      
11 A 1812 1479 0.23      
12 A 1809 1477 1.47      
13 A 1731 1413 18.69      
14 A 1655 1351 58.71      
15 A 1649 1347 13.83      
16 A 1604 1309 1.66      
17 A 1551 1267 21.99      
18 A 1469 1199 3.89      
19 A 1436 1173 8.46      
20 A 1406 1148 6.03      
21 A 1392 1136 40.22      
22 A 1323 1080 10.14      
23 A 1308 1068 0.71      
24 A 1273 1040 1.60      
25 A 1259 1028 8.43      
26 A 1139 930 5.00      
27 A 1086 887 2.76      
28 A 1010 825 1.07      
29 A 957 782 0.70      
30 A 843 688 1.92      
31 A 748 611 5.28      
32 A 546 446 5.45      
33 A 339 277 2.47      
34 A 186 152 0.01      
35 A 169 138 7.12      
36 A 106 86 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 31309.4 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 25564.1 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 HF/STO-3G
ABC
0.22789 0.11147 0.08170

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.129 -0.000 -0.154
H2 -2.652 -0.883 0.199
H3 -2.651 0.885 0.195
H4 -2.119 -0.002 -1.239
C5 -0.684 -0.000 0.386
H6 -0.693 -0.000 1.494
O7 0.025 1.156 -0.093
O8 0.025 -1.156 -0.093
C9 1.413 -0.779 -0.039
H10 1.926 -1.196 -0.909
H11 1.890 -1.172 0.866
C12 1.413 0.779 -0.039
H13 1.926 1.196 -0.910
H14 1.891 1.173 0.865

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.08551.08561.08531.54282.18582.44472.44483.62864.29454.30893.62854.29394.3093
H21.08551.76811.76872.16582.50913.37752.70694.07414.72134.60054.39885.14865.0309
H31.08561.76811.76872.16572.51072.70443.37754.39815.14785.03044.07224.71824.5996
H41.08531.76871.76872.16893.08322.69312.69123.81134.23104.67753.81204.23154.6787
C51.54282.16582.16572.16891.10791.43761.43762.27703.14942.86872.27713.14922.8692
H62.18582.50912.51073.08321.10792.09012.09012.71893.75022.90542.71933.75042.9065
O72.44473.37752.70442.69311.43762.09012.31142.38243.13253.13361.43972.06962.0974
O82.44482.70693.37752.69121.43762.09012.31141.43962.06962.09752.38233.13193.1340
C93.62864.07414.39813.81132.27702.71892.38241.43961.09271.09551.55882.21852.2037
H104.29454.72135.14784.23103.14943.75023.13252.06961.09271.77542.21852.39132.9596
H114.30894.60055.03044.67752.86872.90543.13362.09751.09551.77542.20372.96012.3455
C123.62854.39884.07223.81202.27712.71931.43972.38231.55882.21852.20371.09271.0955
H134.29395.14864.71824.23153.14923.75042.06963.13192.21852.39132.96011.09271.7754
H144.30935.03094.59964.67872.86922.90652.09743.13402.20372.95962.34551.09551.7754

picture of 1,3-Dioxolane, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.017 C1 C5 O7 110.166
C1 C5 O8 110.176 H2 C1 H3 109.050
H2 C1 H4 109.132 H2 C1 C5 109.753
H3 C1 H4 109.132 H3 C1 C5 109.743
H4 C1 C5 110.010 C5 O7 C12 104.635
C5 O8 C9 104.630 H6 C5 O7 109.712
H6 C5 O8 109.711 O7 C5 O8 107.010
O7 C12 C9 105.156 O7 C12 H13 108.854
O7 C12 H14 110.924 O8 C9 H10 108.853
O8 C9 H11 110.926 O8 C9 C12 105.150
C9 C12 H13 112.393 C9 C12 H14 111.039
H10 C9 H11 108.452 H10 C9 C12 112.393
H11 C9 C12 111.043 H13 C12 H14 108.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.188      
2 H 0.073      
3 H 0.073      
4 H 0.076      
5 C 0.186      
6 H 0.044      
7 O -0.252      
8 O -0.252      
9 C -0.011      
10 H 0.071      
11 H 0.060      
12 C -0.011      
13 H 0.070      
14 H 0.060      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.870 -0.000 0.680 1.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.211 -0.000 -0.517
y -0.000 -38.238 -0.001
z -0.517 -0.001 -33.442
Traceless
 xyz
x 5.629 -0.000 -0.517
y -0.000 -6.412 -0.001
z -0.517 -0.001 0.783
Polar
3z2-r21.566
x2-y28.027
xy-0.000
xz-0.517
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.854 0.000 -0.227
y 0.000 3.289 -0.000
z -0.227 -0.000 3.185


<r2> (average value of r2) Å2
<r2> 152.808
(<r2>)1/2 12.362