return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-307.557115
Energy at 298.15K-307.567355
Nuclear repulsion energy259.820504
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/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 3072 3049 21.28      
2 A 3063 3039 17.71      
3 A 3042 3019 32.61      
4 A 2989 2966 20.53      
5 A 2987 2964 49.23      
6 A 2944 2922 69.16      
7 A 2912 2889 63.36      
8 A 2847 2825 107.47      
9 A 1503 1491 1.45      
10 A 1484 1473 1.21      
11 A 1465 1453 1.07      
12 A 1464 1453 3.21      
13 A 1398 1387 60.82      
14 A 1368 1357 7.21      
15 A 1354 1344 13.42      
16 A 1341 1331 8.85      
17 A 1295 1285 1.42      
18 A 1212 1202 13.78      
19 A 1185 1176 0.64      
20 A 1140 1131 19.48      
21 A 1109 1101 32.23      
22 A 1095 1087 106.08      
23 A 1071 1063 54.38      
24 A 1004 996 27.58      
25 A 985 977 58.07      
26 A 912 905 10.20      
27 A 863 857 5.26      
28 A 830 824 39.11      
29 A 800 794 25.17      
30 A 677 671 1.36      
31 A 648 643 2.00      
32 A 483 479 4.31      
33 A 323 320 5.25      
34 A 228 226 0.72      
35 A 211 209 2.64      
36 A 49 49 4.26      

Unscaled Zero Point Vibrational Energy (zpe) 25675.2 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 25477.5 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/6-31G**
ABC
0.22594 0.11236 0.08347

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.092 0.014 -0.222
H2 -2.656 -0.905 0.000
H3 -2.648 0.874 0.179
H4 -1.994 0.124 -1.312
C5 -0.710 -0.051 0.413
H6 -0.777 -0.172 1.518
O7 0.038 1.159 0.135
O8 0.039 -1.136 -0.145
C9 1.414 -0.754 0.049
H10 2.034 -1.325 -0.658
H11 1.746 -0.975 1.084
C12 1.386 0.770 -0.216
H13 1.574 1.005 -1.279
H14 2.112 1.324 0.404

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.10061.09991.09951.52252.18932.44502.42293.59984.35944.17273.55943.94184.4478
H21.10061.78781.79412.16502.52433.39662.70924.07364.75444.53374.38064.81405.2787
H31.09991.78781.79172.16042.52782.70163.37134.37845.23964.85204.05464.46834.7863
H41.09951.79411.79172.15733.09482.70082.66203.77404.33054.57553.61173.67514.6090
C51.52252.16502.16042.15731.11431.44951.43112.26683.20852.70802.33673.03173.1388
H62.18932.52432.52783.09481.11432.08562.08792.70163.73672.68242.92763.83873.4387
O72.44503.39662.70162.70081.44952.08562.31192.35843.28342.89311.44622.09342.0975
O82.42292.70923.37132.66201.43112.08792.31191.44022.06812.10872.33442.86773.2630
C93.59984.07364.37843.77402.26682.70162.35841.44021.09941.10901.54682.20972.2207
H104.35944.75445.23964.33053.20853.73673.28342.06811.09941.79982.23632.45432.8548
H114.17274.53374.85204.57552.70802.68242.89312.10871.10901.79982.20493.08762.4253
C123.55944.38064.05463.61172.33672.92761.44622.33441.54682.23632.20491.10541.1037
H133.94184.81404.46833.67513.03173.83872.09342.86772.20972.45433.08761.10541.7959
H144.44785.27874.78634.60903.13883.43872.09753.26302.22072.85482.42531.10371.7959

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 111.320 C1 C5 O7 110.683
C1 C5 O8 110.194 H2 C1 H3 108.675
H2 C1 H4 109.271 H2 C1 C5 110.214
H3 C1 H4 109.099 H3 C1 C5 109.888
H4 C1 C5 109.669 C5 O7 C12 107.605
C5 O8 C9 104.272 H6 C5 O7 108.169
H6 C5 O8 109.594 O7 C5 O8 106.754
O7 C12 C9 103.942 O7 C12 H13 109.533
O7 C12 H14 109.964 O8 C9 H10 108.299
O8 C9 H11 110.965 O8 C9 C12 102.745
C9 C12 H13 111.771 C9 C12 H14 112.754
H10 C9 H11 109.172 H10 C9 C12 114.306
H11 C9 C12 111.181 H13 C12 H14 108.771
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.293      
2 H 0.102      
3 H 0.105      
4 H 0.109      
5 C 0.395      
6 H 0.057      
7 O -0.478      
8 O -0.455      
9 C 0.034      
10 H 0.097      
11 H 0.084      
12 C 0.070      
13 H 0.089      
14 H 0.085      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.967 -0.249 0.244 1.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.235 -0.182 -0.676
y -0.182 -40.449 -0.719
z -0.676 -0.719 -35.958
Traceless
 xyz
x 6.969 -0.182 -0.676
y -0.182 -6.853 -0.719
z -0.676 -0.719 -0.116
Polar
3z2-r2-0.232
x2-y29.214
xy-0.182
xz-0.676
yz-0.719


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> 152.552
(<r2>)1/2 12.351