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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-305.859645
Energy at 298.15K-305.869747
Nuclear repulsion energy256.178416
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 BLYP/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 3074 3057 23.99      
2 A 3061 3044 16.59      
3 A 3056 3040 29.52      
4 A 3042 3025 31.23      
5 A 2996 2980 9.37      
6 A 2954 2938 86.05      
7 A 2945 2928 28.10      
8 A 2936 2920 77.34      
9 A 1528 1520 0.52      
10 A 1522 1514 4.13      
11 A 1516 1507 0.12      
12 A 1514 1505 3.86      
13 A 1419 1411 11.62      
14 A 1376 1369 34.02      
15 A 1343 1336 2.79      
16 A 1336 1329 24.45      
17 A 1261 1254 8.87      
18 A 1204 1197 7.44      
19 A 1167 1160 0.14      
20 A 1122 1116 14.15      
21 A 1098 1092 7.76      
22 A 1075 1069 23.64      
23 A 1049 1043 122.38      
24 A 970 964 12.07      
25 A 938 932 44.31      
26 A 889 885 16.81      
27 A 855 851 5.63      
28 A 793 788 16.78      
29 A 762 758 25.66      
30 A 654 651 3.94      
31 A 605 602 3.15      
32 A 439 436 11.34      
33 A 322 320 2.78      
34 A 233 232 1.01      
35 A 214 213 0.48      
36 A 32 31 9.90      

Unscaled Zero Point Vibrational Energy (zpe) 25648.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 25506.9 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 BLYP/3-21G
ABC
0.20606 0.11237 0.08467

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.025 0.008 0.365
H2 2.596 -0.929 0.276
H3 2.651 0.851 0.036
H4 1.734 0.154 1.415
C5 0.760 -0.068 -0.492
H6 0.981 -0.183 -1.568
O7 -0.054 1.177 -0.354
O8 -0.056 -1.198 0.011
C9 -1.463 -0.709 -0.009
H10 -2.020 -1.298 0.732
H11 -1.918 -0.811 -1.011
C12 -1.297 0.781 0.369
H13 -1.184 0.894 1.462
H14 -2.110 1.422 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.10111.10041.09971.52932.20542.49092.43063.57984.26594.25503.41013.50494.3853
H21.10111.79701.79332.16842.56263.44322.67874.07494.65334.69534.25314.36145.2683
H31.10041.79701.79682.16772.53642.75233.39494.39965.18814.97283.96184.09154.7953
H41.09971.79331.79682.15253.09562.71522.64603.60404.08204.48883.26663.01034.2878
C51.52932.16842.16772.15251.10521.49381.48172.36303.27672.82682.38562.91923.2713
H62.20542.56262.53643.09561.10522.09632.14502.94623.94203.01763.14153.87693.8200
O72.49093.44322.75232.71521.49382.09632.40302.37873.34172.80241.49062.15752.1008
O82.43062.67873.39492.64601.48172.14502.40301.49002.09462.15942.36382.78493.3300
C93.57984.07494.39963.60402.36302.94622.37871.49001.09831.10561.54642.19322.2271
H104.26594.65335.18814.08203.27673.94203.34172.09461.09831.81312.23162.45692.8182
H114.25504.69534.97284.48882.82683.01762.80242.15941.10561.81312.19673.09222.4588
C123.41014.25313.96183.26662.38563.14151.49062.36381.54642.23162.19671.10491.0992
H133.50494.36144.09153.01032.91923.87692.15752.78492.19322.45693.09221.10491.8093
H144.38535.26834.79534.28783.27133.82002.10083.33002.22712.81822.45881.09921.8093

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 112.678 C1 C5 O7 110.959
C1 C5 O8 107.640 H2 C1 H3 109.416
H2 C1 H4 109.136 H2 C1 C5 109.975
H3 C1 H4 109.510 H3 C1 C5 109.963
H4 C1 C5 108.822 C5 O7 C12 106.143
C5 O8 C9 105.344 H6 C5 O7 106.570
H6 C5 O8 111.192 O7 C5 O8 107.721
O7 C12 C9 103.101 O7 C12 H13 111.595
O7 C12 H14 107.464 O8 C9 H10 107.076
O8 C9 H11 111.749 O8 C9 C12 102.231
C9 C12 H13 110.519 C9 C12 H14 113.592
H10 C9 H11 110.703 H10 C9 C12 114.008
H11 C9 C12 110.753 H13 C12 H14 110.348
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.526      
2 H 0.186      
3 H 0.186      
4 H 0.193      
5 C 0.219      
6 H 0.180      
7 O -0.431      
8 O -0.430      
9 C -0.167      
10 H 0.194      
11 H 0.182      
12 C -0.158      
13 H 0.181      
14 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.048 -0.078 0.287 1.089
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.074 -0.028 -1.093
y -0.028 -41.203 1.092
z -1.093 1.092 -35.802
Traceless
 xyz
x 7.428 -0.028 -1.093
y -0.028 -7.765 1.092
z -1.093 1.092 0.337
Polar
3z2-r20.673
x2-y210.129
xy-0.028
xz-1.093
yz1.092


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> 153.266
(<r2>)1/2 12.380