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

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-307.613818
Energy at 298.15K-307.624264
Nuclear repulsion energy263.528003
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 3185 3031 15.05      
2 A 3179 3026 11.09      
3 A 3162 3010 26.12      
4 A 3119 2969 34.49      
5 A 3088 2939 8.91      
6 A 3073 2925 65.83      
7 A 3038 2892 54.61      
8 A 2972 2829 93.52      
9 A 1540 1466 0.53      
10 A 1522 1449 4.61      
11 A 1494 1422 3.06      
12 A 1493 1421 9.14      
13 A 1454 1384 78.32      
14 A 1401 1333 2.81      
15 A 1393 1326 11.56      
16 A 1387 1320 0.16      
17 A 1346 1281 0.63      
18 A 1262 1201 23.42      
19 A 1235 1176 1.80      
20 A 1197 1139 123.08      
21 A 1173 1117 32.82      
22 A 1148 1092 64.48      
23 A 1124 1070 51.52      
24 A 1100 1047 16.64      
25 A 1074 1023 46.91      
26 A 968 922 8.29      
27 A 896 853 51.65      
28 A 887 844 2.76      
29 A 864 822 7.32      
30 A 708 674 1.34      
31 A 693 660 3.37      
32 A 511 487 4.34      
33 A 332 316 6.77      
34 A 224 213 0.48      
35 A 203 194 5.55      
36 A 52 50 4.99      

Unscaled Zero Point Vibrational Energy (zpe) 26748.5 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 25459.2 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
0.23594 0.11482 0.08513

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)
C1 -2.083 0.012 -0.177
H2 -2.627 -0.897 0.088
H3 -2.616 0.873 0.231
H4 -2.036 0.102 -1.264
C5 -0.691 -0.039 0.387
H6 -0.704 -0.142 1.487
O7 0.031 1.134 0.050
O8 0.035 -1.109 -0.166
C9 1.390 -0.759 0.043
H10 2.003 -1.299 -0.678
H11 1.703 -1.033 1.060
C12 1.389 0.764 -0.152
H13 1.682 1.053 -1.166
H14 2.035 1.278 0.567

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.09181.09151.09141.50362.16722.40462.39673.56444.32104.11823.55314.02954.3727
H21.09181.77581.78162.13942.49553.34572.68294.01954.71074.44034.35284.89295.1673
H31.09151.77581.77892.13592.50292.66593.33354.32925.18464.79294.02474.52244.6808
H41.09141.78161.77892.13433.06632.65792.63813.76624.31534.54633.66143.83864.6162
C51.50362.13942.13592.13431.10511.41761.40632.22803.15922.67782.29343.03823.0327
H62.16722.49552.50293.06631.10512.05772.05282.61693.65472.60162.80873.76273.2201
O72.40463.34572.66592.65791.41762.05772.25302.32993.21552.91711.42202.05172.0746
O82.39672.68293.33352.63811.40632.05282.25301.41452.04262.07172.31062.89513.1992
C93.56444.01954.32923.76622.22802.61692.32991.41451.09041.09891.53502.19752.2002
H104.32104.71075.18464.31533.15923.65473.21552.04261.09041.78452.21562.42312.8623
H114.11824.44034.79294.54632.67782.60162.91712.07171.09891.78452.18973.05042.3862
C123.55314.35284.02473.66142.29342.80871.42202.31061.53502.21562.18971.09411.0948
H134.02954.89294.52243.83863.03823.76272.05172.89512.19752.42313.05041.09411.7825
H144.37275.16734.68084.61623.03273.22012.07463.19922.20022.86232.38621.09481.7825

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 111.442 C1 C5 O7 110.767
C1 C5 O8 110.858 H2 C1 H3 108.853
H2 C1 H4 109.381 H2 C1 C5 110.020
H3 C1 H4 109.161 H3 C1 C5 109.765
H4 C1 C5 109.641 C5 O7 C12 107.734
C5 O8 C9 104.349 H6 C5 O7 108.675
H6 C5 O8 109.068 O7 C5 O8 105.847
O7 C12 C9 103.915 O7 C12 H13 108.559
O7 C12 H14 110.361 O8 C9 H10 108.571
O8 C9 H11 110.401 O8 C9 C12 103.069
C9 C12 H13 112.320 C9 C12 H14 112.492
H10 C9 H11 109.186 H10 C9 C12 114.035
H11 C9 C12 111.394 H13 C12 H14 109.041
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 C -0.489      
2 H 0.180      
3 H 0.183      
4 H 0.193      
5 C -0.028      
6 H 0.135      
7 O -0.334      
8 O -0.307      
9 C -0.085      
10 H 0.170      
11 H 0.155      
12 C -0.089      
13 H 0.161      
14 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.167 -0.244 0.547 1.311
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.915 -0.154 -0.745
y -0.154 -41.375 -0.678
z -0.745 -0.678 -36.049
Traceless
 xyz
x 7.797 -0.154 -0.745
y -0.154 -7.893 -0.678
z -0.745 -0.678 0.096
Polar
3z2-r20.191
x2-y210.460
xy-0.154
xz-0.745
yz-0.678


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> 149.703
(<r2>)1/2 12.235