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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-305.844305
Energy at 298.15K-305.854719
Nuclear repulsion energy261.075980
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 B1B95/3-21G
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 3176 3039 27.48      
2 A 3175 3038 10.80      
3 A 3173 3035 20.67      
4 A 3163 3026 17.28      
5 A 3096 2962 44.37      
6 A 3090 2956 10.80      
7 A 3073 2940 54.97      
8 A 3064 2931 25.21      
9 A 1557 1490 0.55      
10 A 1553 1486 7.21      
11 A 1545 1478 0.25      
12 A 1543 1476 5.98      
13 A 1455 1392 23.03      
14 A 1413 1352 28.63      
15 A 1384 1324 2.34      
16 A 1378 1318 16.28      
17 A 1305 1248 8.09      
18 A 1248 1194 10.55      
19 A 1211 1159 1.23      
20 A 1164 1114 32.12      
21 A 1144 1095 81.39      
22 A 1124 1075 50.76      
23 A 1103 1056 49.16      
24 A 1036 992 18.57      
25 A 1005 962 28.86      
26 A 943 903 9.79      
27 A 914 874 1.51      
28 A 848 812 36.88      
29 A 833 797 4.05      
30 A 697 666 2.81      
31 A 614 587 5.28      
32 A 452 433 18.24      
33 A 350 334 1.62      
34 A 246 236 1.15      
35 A 231 221 0.45      
36 A 62 60 11.92      

Unscaled Zero Point Vibrational Energy (zpe) 26683.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25528.4 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 B1B95/3-21G
ABC
0.20405 0.11901 0.09141

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.918 0.005 0.442
H2 2.469 -0.937 0.453
H3 2.587 0.817 0.150
H4 1.531 0.197 1.445
C5 0.758 -0.088 -0.521
H6 1.070 -0.222 -1.559
O7 -0.060 1.117 -0.482
O8 -0.089 -1.197 -0.084
C9 -1.443 -0.660 0.067
H10 -1.935 -1.219 0.861
H11 -2.007 -0.735 -0.868
C12 -1.174 0.802 0.414
H13 -0.885 0.902 1.466
H14 -1.991 1.479 0.172

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.09171.09151.09191.51062.18532.44992.39803.44594.06484.20313.19263.11534.1862
H21.09171.78381.77452.14422.55283.38962.62643.93984.43184.67074.03633.95625.0799
H31.09151.78381.78192.14842.51082.73803.35754.29235.01034.95463.77003.71334.6259
H41.09191.77451.78192.13163.06802.66312.62793.38723.78974.32812.95702.51643.9584
C51.51062.14422.14842.13161.09231.45681.46252.34823.23162.86042.32282.76103.2390
H62.18532.55282.51083.06801.09232.05682.11413.02453.98533.19483.15833.77263.9065
O72.44993.38962.73802.66311.45682.05682.34882.31773.28372.71491.46402.12622.0710
O82.39802.62643.35752.62791.46252.11412.34881.46402.07422.12262.32822.72783.2931
C93.44593.93984.29233.38722.34823.02452.31771.46401.08931.09461.52602.16942.2103
H104.06484.43185.01033.78973.23163.98533.28372.07421.08931.79682.20582.44342.7853
H114.20314.67074.95464.32812.86043.19482.71492.12261.09461.79682.16763.06342.4459
C123.19264.03633.77002.95702.32283.15831.46402.32821.52602.20582.16761.09541.0886
H133.11533.95623.71332.51642.76103.77262.12622.72782.16942.44343.06341.09541.7974
H144.18625.07994.62593.95843.23903.90652.07103.29312.21032.78532.44591.08861.7974

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 113.204 C1 C5 O7 111.290
C1 C5 O8 107.514 H2 C1 H3 109.586
H2 C1 H4 108.713 H2 C1 C5 109.926
H3 C1 H4 109.400 H3 C1 C5 110.268
H4 C1 C5 108.920 C5 O7 C12 105.365
C5 O8 C9 106.717 H6 C5 O7 106.708
H6 C5 O8 110.853 O7 C5 O8 107.136
O7 C12 C9 101.616 O7 C12 H13 111.543
O7 C12 H14 107.541 O8 C9 H10 107.757
O8 C9 H11 111.296 O8 C9 C12 102.254
C9 C12 H13 110.626 C9 C12 H14 114.383
H10 C9 H11 110.726 H10 C9 C12 113.965
H11 C9 C12 110.530 H13 C12 H14 110.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.601      
2 H 0.220      
3 H 0.215      
4 H 0.218      
5 C 0.212      
6 H 0.226      
7 O -0.480      
8 O -0.487      
9 C -0.197      
10 H 0.227      
11 H 0.219      
12 C -0.218      
13 H 0.215      
14 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.991 0.187 0.764 1.265
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.711 -0.379 -1.467
y -0.379 -41.218 1.328
z -1.467 1.328 -35.490
Traceless
 xyz
x 7.643 -0.379 -1.467
y -0.379 -8.118 1.328
z -1.467 1.328 0.475
Polar
3z2-r20.950
x2-y210.507
xy-0.379
xz-1.467
yz1.328


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.916 -0.078 -0.352
y -0.078 5.830 0.075
z -0.352 0.075 5.917


<r2> (average value of r2) Å2
<r2> 146.337
(<r2>)1/2 12.097