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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-305.850240
Energy at 298.15K-305.861037
Nuclear repulsion energy265.482832
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/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 3286 2966 46.22      
2 A 3284 2965 41.54      
3 A 3276 2957 27.90      
4 A 3252 2936 58.06      
5 A 3206 2894 55.02      
6 A 3201 2889 22.73      
7 A 3179 2869 73.90      
8 A 3148 2841 91.87      
9 A 1675 1512 0.31      
10 A 1656 1495 2.28      
11 A 1617 1459 22.74      
12 A 1615 1458 3.16      
13 A 1591 1436 79.16      
14 A 1540 1390 21.53      
15 A 1532 1382 1.34      
16 A 1526 1377 11.50      
17 A 1473 1329 1.40      
18 A 1373 1240 32.55      
19 A 1345 1214 3.63      
20 A 1307 1180 239.97      
21 A 1280 1155 40.33      
22 A 1249 1127 57.92      
23 A 1233 1113 29.47      
24 A 1193 1076 6.94      
25 A 1155 1042 38.71      
26 A 1031 930 14.32      
27 A 992 896 47.30      
28 A 971 876 9.06      
29 A 925 835 5.29      
30 A 771 695 2.87      
31 A 735 663 4.93      
32 A 536 484 7.57      
33 A 361 326 5.54      
34 A 255 230 0.17      
35 A 216 195 3.75      
36 A 66 60 7.05      

Unscaled Zero Point Vibrational Energy (zpe) 28523.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 25745.4 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/6-31G**
ABC
0.23732 0.11639 0.08694

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.058 0.012 -0.231
H2 -2.608 -0.900 -0.024
H3 -2.615 0.854 0.162
H4 -1.950 0.127 -1.303
C5 -0.696 -0.049 0.411
H6 -0.779 -0.166 1.492
O7 0.039 1.116 0.144
O8 0.046 -1.102 -0.117
C9 1.392 -0.743 0.025
H10 1.982 -1.286 -0.700
H11 1.749 -0.983 1.025
C12 1.355 0.766 -0.209
H13 1.529 1.016 -1.250
H14 2.062 1.309 0.406

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.08431.08391.08331.50692.15352.39922.38323.54114.26944.13093.49533.86274.3670
H21.08431.76441.76692.13732.48643.33072.66264.00294.65504.48234.30224.72135.1842
H31.08391.76441.76572.13532.48652.66663.31424.31595.14384.81323.98804.38164.7059
H41.08331.76691.76572.13013.04422.64982.62653.69964.22124.50913.53873.59134.5182
C51.50692.13732.13532.13011.09091.40221.39182.23403.15232.68892.29192.97413.0747
H62.15352.48642.48653.04421.09092.03212.03502.68243.69852.69722.88323.77433.3807
O72.39923.33072.66662.64981.40222.03212.23242.30223.20262.84711.40652.04322.0500
O82.38322.66263.31422.62651.39182.03502.23241.40032.03052.05422.28242.82363.1864
C93.54114.00294.31593.69962.23402.68242.30221.40031.08121.08841.52752.17752.1925
H104.26944.65505.14384.22123.15233.69853.20262.03051.08121.76692.20142.41042.8227
H114.13094.48234.81324.50912.68892.69722.84712.05421.08841.76692.17623.03662.3946
C123.49534.30223.98803.53872.29192.88321.40652.28241.52752.20142.17621.08511.0839
H133.86274.72134.38163.59132.97413.77432.04322.82362.17752.41043.03661.08511.7644
H144.36705.18424.70594.51823.07473.38072.05003.18642.19252.82272.39461.08391.7644

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 110.973 C1 C5 O7 111.064
C1 C5 O8 110.540 H2 C1 H3 108.929
H2 C1 H4 109.205 H2 C1 C5 110.074
H3 C1 H4 109.122 H3 C1 C5 109.935
H4 C1 C5 109.556 C5 O7 C12 109.366
C5 O8 C9 106.280 H6 C5 O7 108.548
H6 C5 O8 109.509 O7 C5 O8 106.065
O7 C12 C9 103.298 O7 C12 H13 109.504
O7 C12 H14 110.129 O8 C9 H10 109.144
O8 C9 H11 110.628 O8 C9 C12 102.353
C9 C12 H13 111.795 C9 C12 H14 113.102
H10 C9 H11 109.049 H10 C9 C12 114.008
H11 C9 C12 111.485 H13 C12 H14 108.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.343 -0.433    
2 H 0.123 0.099    
3 H 0.125 0.106    
4 H 0.130 0.135    
5 C 0.542 0.712    
6 H 0.094 -0.043    
7 O -0.670 -0.550    
8 O -0.644 -0.504    
9 C 0.052 0.134    
10 H 0.136 0.047    
11 H 0.113 0.019    
12 C 0.108 0.276    
13 H 0.119 0.013    
14 H 0.116 -0.011    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.290 -0.204 0.299 1.340
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.802 -0.078 -0.872
y -0.078 -41.265 -0.871
z -0.872 -0.871 -35.727
Traceless
 xyz
x 7.694 -0.078 -0.872
y -0.078 -8.001 -0.871
z -0.872 -0.871 0.307
Polar
3z2-r20.614
x2-y210.463
xy-0.078
xz-0.872
yz-0.871


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.705 0.028 -0.183
y 0.028 5.990 -0.103
z -0.183 -0.103 6.141


<r2> (average value of r2) Å2
<r2> 147.613
(<r2>)1/2 12.150