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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-57.989576
Energy at 298.15K-58.000275
Nuclear repulsion energy147.208643
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/CEP-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 3328 2988 111.86      
2 A 3324 2985 42.90      
3 A 3314 2976 48.73      
4 A 3297 2961 56.10      
5 A 3256 2924 97.36      
6 A 3240 2910 36.77      
7 A 3230 2900 90.06      
8 A 3194 2868 114.73      
9 A 1675 1504 0.56      
10 A 1655 1486 2.22      
11 A 1617 1452 33.26      
12 A 1615 1450 2.22      
13 A 1596 1433 62.23      
14 A 1532 1376 34.63      
15 A 1524 1369 3.99      
16 A 1519 1364 14.60      
17 A 1467 1317 0.27      
18 A 1365 1226 30.39      
19 A 1336 1200 5.52      
20 A 1300 1167 219.87      
21 A 1276 1146 46.16      
22 A 1243 1117 57.83      
23 A 1223 1099 36.14      
24 A 1196 1074 7.04      
25 A 1162 1043 49.34      
26 A 1030 925 16.19      
27 A 990 889 57.19      
28 A 941 845 5.15      
29 A 923 829 3.81      
30 A 757 680 1.86      
31 A 745 669 6.40      
32 A 534 480 7.32      
33 A 348 312 6.11      
34 A 245 220 0.11      
35 A 202 181 6.76      
36 A 57 51 5.90      

Unscaled Zero Point Vibrational Energy (zpe) 28627.4 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 25707.4 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/CEP-31G*
ABC
0.23626 0.11438 0.08487

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.089 0.011 -0.182
H2 -2.628 -0.902 0.076
H3 -2.624 0.868 0.227
H4 -2.036 0.105 -1.266
C5 -0.682 -0.039 0.393
H6 -0.703 -0.140 1.484
O7 0.036 1.127 0.060
O8 0.042 -1.105 -0.154
C9 1.399 -0.764 0.018
H10 1.990 -1.282 -0.731
H11 1.741 -1.059 1.013
C12 1.391 0.773 -0.147
H13 1.684 1.083 -1.149
H14 2.029 1.274 0.582

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.09041.09011.08961.52092.17322.41282.40613.57854.31454.15253.56314.04024.3746
H21.09041.77571.77892.15192.50403.34842.68754.02914.70334.47104.35964.90225.1645
H31.09011.77571.77732.14982.50772.67853.33894.34655.18034.83594.03394.52834.6842
H41.08961.77891.77732.14643.06672.66422.64983.76844.29204.56243.66703.84874.6159
C51.52092.15192.14982.14641.09651.40901.40022.23533.15452.70122.29103.03883.0179
H62.17322.50402.50773.06671.09652.04452.04222.63773.66962.65322.80683.75853.2053
O72.41283.34842.67852.66421.40902.04452.24222.33113.20102.93091.41522.04412.0649
O82.40612.68753.33892.64981.40022.04222.24221.40902.03952.06142.31282.91113.1859
C93.57854.02914.34653.76842.23532.63772.33111.40901.08581.09281.54672.20322.2073
H104.31454.70335.18034.29203.15453.66963.20102.03951.08581.77582.21972.42102.8745
H114.15254.47104.83594.56242.70122.65322.93092.06141.09281.77582.19613.04312.3897
C123.56314.35964.03393.66702.29102.80681.41522.31281.54672.21972.19611.08911.0900
H134.04024.90224.52833.84873.03883.75852.04412.91112.20322.42103.04311.08911.7751
H144.37465.16454.68424.61593.01793.20532.06493.18592.20732.87452.38971.09001.7751

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 111.223 C1 C5 O7 110.818
C1 C5 O8 110.840 H2 C1 H3 109.048
H2 C1 H4 109.379 H2 C1 C5 109.889
H3 C1 H4 109.257 H3 C1 C5 109.743
H4 C1 C5 109.508 C5 O7 C12 108.425
C5 O8 C9 105.441 H6 C5 O7 108.735
H6 C5 O8 109.155 O7 C5 O8 105.904
O7 C12 C9 103.732 O7 C12 H13 108.729
O7 C12 H14 110.347 O8 C9 H10 108.984
O8 C9 H11 110.328 O8 C9 C12 102.882
C9 C12 H13 112.257 C9 C12 H14 112.529
H10 C9 H11 109.199 H10 C9 C12 113.809
H11 C9 C12 111.458 H13 C12 H14 109.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.194      
2 H 0.110      
3 H 0.113      
4 H 0.116      
5 C 0.007      
6 H 0.109      
7 O -0.354      
8 O -0.350      
9 C -0.011      
10 H 0.175      
11 H 0.087      
12 C -0.048      
13 H 0.123      
14 H 0.117      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.351 -0.204 0.645 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.625 -0.042 -0.840
y -0.042 -41.452 -0.723
z -0.840 -0.723 -35.321
Traceless
 xyz
x 7.762 -0.042 -0.840
y -0.042 -8.479 -0.723
z -0.840 -0.723 0.718
Polar
3z2-r21.436
x2-y210.827
xy-0.042
xz-0.840
yz-0.723


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.567 0.003 -0.109
y 0.003 5.969 -0.088
z -0.109 -0.088 5.672


<r2> (average value of r2) Å2
<r2> 124.565
(<r2>)1/2 11.161