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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-307.592648
Energy at 298.15K-307.603120
Nuclear repulsion energy263.891354
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 mPW1PW91/6-31G*
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 3191 3026 17.11      
2 A 3186 3021 13.50      
3 A 3167 3003 29.60      
4 A 3119 2958 48.86      
5 A 3098 2938 8.01      
6 A 3074 2915 60.61      
7 A 3039 2882 57.04      
8 A 2980 2826 99.29      
9 A 1566 1485 0.35      
10 A 1546 1466 3.02      
11 A 1520 1441 1.74      
12 A 1519 1440 6.13      
13 A 1472 1396 81.83      
14 A 1423 1349 5.79      
15 A 1419 1346 10.54      
16 A 1405 1332 5.22      
17 A 1359 1289 0.93      
18 A 1276 1210 24.69      
19 A 1247 1183 0.98      
20 A 1208 1145 132.31      
21 A 1185 1124 42.36      
22 A 1162 1102 57.14      
23 A 1139 1080 48.05      
24 A 1108 1051 16.18      
25 A 1083 1027 38.78      
26 A 974 923 8.14      
27 A 910 863 29.76      
28 A 905 858 17.81      
29 A 868 823 7.24      
30 A 714 677 1.47      
31 A 685 649 3.02      
32 A 508 482 4.82      
33 A 334 317 5.60      
34 A 236 224 0.35      
35 A 212 201 3.93      
36 A 51 49 4.55      

Unscaled Zero Point Vibrational Energy (zpe) 26942.6 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 25549.7 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 mPW1PW91/6-31G*
ABC
0.23461 0.11559 0.08584

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.071 0.013 -0.200
H2 -2.623 -0.900 0.034
H3 -2.615 0.869 0.204
H4 -1.991 0.119 -1.284
C5 -0.690 -0.046 0.398
H6 -0.735 -0.164 1.496
O7 0.035 1.134 0.100
O8 0.038 -1.111 -0.155
C9 1.388 -0.751 0.046
H10 2.007 -1.307 -0.661
H11 1.708 -0.992 1.071
C12 1.372 0.763 -0.188
H13 1.602 1.019 -1.228
H14 2.066 1.299 0.469

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.09251.09211.09201.50562.16642.40412.39023.55094.31004.11103.52353.94394.3830
H21.09251.77711.78182.14402.49913.34762.67654.01434.69904.45414.33314.80885.1970
H31.09211.77711.77942.14012.50422.66503.33024.32175.18084.78544.00784.45604.7080
H41.09201.78181.77942.13343.06432.65582.62853.73504.29024.52373.59603.70474.5745
C51.50562.14402.14012.13341.10491.41731.40382.22313.15962.66402.29183.00573.0678
H62.16642.49912.50423.06431.10492.05572.05452.63743.67062.61402.85183.77893.3224
O72.40413.34762.66502.65581.41732.05572.25982.32163.22892.87441.41772.05762.0708
O82.39022.67653.33022.62851.40382.05452.25981.41162.04152.07422.30022.85183.2104
C93.55094.01434.32173.73502.22312.63742.32161.41161.09101.09991.53162.19112.1997
H104.31004.69905.18084.29023.15963.67063.22892.04151.09101.78482.21552.42792.8404
H114.11104.45414.78544.52372.66402.61402.87442.07421.09991.78482.18513.05592.3955
C123.52354.33314.00783.59602.29182.85181.41772.30021.53162.21552.18511.09581.0951
H133.94394.80884.45603.70473.00573.77892.05762.85182.19112.42793.05591.09581.7810
H144.38305.19704.70804.57453.06783.32242.07083.21042.19972.84042.39551.09511.7810

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 111.247 C1 C5 O7 110.638
C1 C5 O8 110.433 H2 C1 H3 108.869
H2 C1 H4 109.306 H2 C1 C5 110.205
H3 C1 H4 109.119 H3 C1 C5 109.919
H4 C1 C5 109.401 C5 O7 C12 107.874
C5 O8 C9 104.298 H6 C5 O7 108.543
H6 C5 O8 109.385 O7 C5 O8 106.459
O7 C12 C9 103.776 O7 C12 H13 109.220
O7 C12 H14 110.336 O8 C9 H10 108.642
O8 C9 H11 110.745 O8 C9 C12 102.724
C9 C12 H13 111.945 C9 C12 H14 112.685
H10 C9 H11 109.101 H10 C9 C12 114.248
H11 C9 C12 111.210 H13 C12 H14 108.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.537      
2 H 0.183      
3 H 0.186      
4 H 0.189      
5 C 0.347      
6 H 0.138      
7 O -0.508      
8 O -0.484      
9 C -0.127      
10 H 0.188      
11 H 0.164      
12 C -0.078      
13 H 0.171      
14 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.086 -0.244 0.356 1.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.663 -0.163 -0.736
y -0.163 -40.232 -0.690
z -0.736 -0.690 -35.433
Traceless
 xyz
x 7.170 -0.163 -0.736
y -0.163 -7.184 -0.690
z -0.736 -0.690 0.014
Polar
3z2-r20.028
x2-y29.570
xy-0.163
xz-0.736
yz-0.690


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> 148.616
(<r2>)1/2 12.191