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

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-304.142007
Energy at 298.15K-304.152670
Nuclear repulsion energy261.698015
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/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 3324 3000 42.25      
2 A 3312 2989 17.45      
3 A 3299 2978 49.27      
4 A 3292 2971 17.25      
5 A 3264 2946 37.73      
6 A 3243 2927 46.56      
7 A 3236 2920 35.62      
8 A 3223 2910 9.56      
9 A 1690 1526 0.02      
10 A 1678 1514 1.30      
11 A 1659 1497 3.74      
12 A 1656 1495 3.41      
13 A 1577 1424 19.57      
14 A 1551 1400 55.69      
15 A 1520 1372 1.64      
16 A 1494 1349 13.17      
17 A 1446 1306 8.96      
18 A 1359 1226 12.84      
19 A 1326 1197 1.60      
20 A 1256 1134 125.70      
21 A 1249 1127 47.37      
22 A 1224 1105 48.53      
23 A 1224 1105 75.26      
24 A 1142 1031 15.55      
25 A 1086 981 37.01      
26 A 984 888 2.15      
27 A 981 885 8.56      
28 A 932 842 47.77      
29 A 882 796 5.34      
30 A 755 681 2.46      
31 A 692 624 7.40      
32 A 495 447 18.47      
33 A 365 329 4.18      
34 A 244 221 0.54      
35 A 217 196 0.94      
36 A 58 52 15.54      

Unscaled Zero Point Vibrational Energy (zpe) 28466.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 25693.9 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/3-21G*
ABC
0.21767 0.11578 0.08778

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.998 0.009 0.366
H2 2.564 -0.908 0.281
H3 2.609 0.843 0.047
H4 1.710 0.152 1.398
C5 0.753 -0.072 -0.484
H6 0.971 -0.200 -1.532
O7 -0.045 1.123 -0.345
O8 -0.066 -1.156 -0.009
C9 -1.441 -0.706 0.029
H10 -1.955 -1.254 0.800
H11 -1.917 -0.862 -0.930
C12 -1.282 0.791 0.332
H13 -1.186 0.964 1.394
H14 -2.071 1.399 -0.078

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.08181.08161.08151.50952.16822.43272.39883.52804.17234.21423.37193.47914.3223
H21.08181.76721.76102.13692.51593.36552.65734.01804.56204.64194.20534.33685.1903
H31.08161.76721.76382.13712.50392.69803.33944.33595.07894.93423.90234.02874.7148
H41.08151.76101.76382.12413.04322.65812.61583.54113.97104.42753.24073.00804.2466
C51.50952.13692.13712.12411.07821.44371.43842.33993.22122.81922.35622.89133.2101
H62.16822.51592.50393.04321.07822.04742.07552.91663.88683.02293.08753.81703.7319
O72.43273.36552.69802.65811.44372.04742.30302.33033.25692.78981.44882.08582.0619
O82.39882.65733.33942.61581.43842.07552.30301.44722.05732.08832.32032.77763.2487
C93.52804.01804.33593.54112.33992.91662.33031.44721.07681.08151.53492.17182.2001
H104.17234.56205.07893.97103.22123.88683.25692.05731.07681.77352.20282.42192.7973
H114.21424.64194.93424.42752.81923.02292.78982.08831.08151.77352.17363.04422.4215
C123.37194.20533.90233.24072.35623.08751.44882.32031.53492.20282.17361.08051.0771
H133.47914.33684.02873.00802.89133.81702.08582.77762.17182.42193.04421.08051.7715
H144.32235.19034.71484.24663.21013.73192.06193.24872.20012.79732.42151.07711.7715

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 112.769 C1 C5 O7 110.903
C1 C5 O8 108.898 H2 C1 H3 109.544
H2 C1 H4 108.984 H2 C1 C5 110.004
H3 C1 H4 109.253 H3 C1 C5 110.031
H4 C1 C5 109.004 C5 O7 C12 109.098
C5 O8 C9 108.365 H6 C5 O7 107.673
H6 C5 O8 110.301 O7 C5 O8 106.085
O7 C12 C9 102.669 O7 C12 H13 110.262
O7 C12 H14 108.541 O8 C9 H10 108.299
O8 C9 H11 110.514 O8 C9 C12 102.127
C9 C12 H13 111.086 C9 C12 H14 113.612
H10 C9 H11 110.520 H10 C9 C12 113.864
H11 C9 C12 111.172 H13 C12 H14 110.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.604 -0.539    
2 H 0.215 0.124    
3 H 0.214 0.126    
4 H 0.220 0.174    
5 C 0.407 0.781    
6 H 0.217 -0.020    
7 O -0.652 -0.600    
8 O -0.651 -0.580    
9 C -0.132 0.148    
10 H 0.230 0.058    
11 H 0.215 0.045    
12 C -0.121 0.212    
13 H 0.216 0.037    
14 H 0.225 0.035    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.422 -0.020 0.351 1.464
CHELPG -1.432 -0.015 0.384 1.482
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.275 -0.163 -1.357
y -0.163 -42.738 1.430
z -1.357 1.430 -35.723
Traceless
 xyz
x 8.956 -0.163 -1.357
y -0.163 -9.740 1.430
z -1.357 1.430 0.784
Polar
3z2-r21.568
x2-y212.464
xy-0.163
xz-1.357
yz1.430


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.380 -0.050 -0.303
y -0.050 5.515 0.087
z -0.303 0.087 5.633


<r2> (average value of r2) Å2
<r2> 148.796
(<r2>)1/2 12.198