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: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-305.980752
Energy at 298.15K 
Nuclear repulsion energy258.805127
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 B3LYP/3-21G*
Rotational Constants (cm-1) from geometry optimized at B3LYP/3-21G*
ABC
0.21126 0.11432 0.08627

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.008 0.008 0.361
H2 2.577 -0.922 0.275
H3 2.629 0.847 0.035
H4 1.719 0.155 1.404
C5 0.754 -0.070 -0.487
H6 0.971 -0.191 -1.554
O7 -0.050 1.156 -0.348
O8 -0.058 -1.181 0.010
C9 -1.450 -0.705 -0.000
H10 -1.999 -1.280 0.746
H11 -1.906 -0.822 -0.991
C12 -1.288 0.781 0.355
H13 -1.183 0.910 1.438
H14 -2.094 1.411 -0.025

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 O7 O8 C9 H10 H11 C12 H13 H14
C11.09351.09301.09271.51652.18762.46092.40993.54964.22754.22383.38533.48664.3524
H21.09351.78551.78082.15192.54203.40662.66104.04214.61444.65954.22384.34085.2293
H31.09301.78551.78412.15172.52022.72363.36624.36435.14324.94003.93024.06244.7567
H41.09271.78081.78412.13513.07142.68312.62423.57104.03974.45313.24512.99814.2608
C51.51652.15192.15172.13511.09611.47251.46242.34433.25012.80952.36632.90103.2424
H62.18762.54202.52023.07141.09612.07642.11772.92233.91142.99873.11293.84783.7807
O72.46093.40662.72362.68311.47252.07642.36382.35483.30652.78761.47192.12942.0849
O82.40992.66103.36622.62421.46242.11772.36381.47082.07852.13192.34062.77063.2953
C93.54964.04214.36433.57102.34432.92232.35481.47081.09041.09701.53642.17922.2115
H104.22754.61445.14324.03973.25013.91143.30652.07851.09041.79842.21562.43822.8007
H114.22384.65954.94004.45312.80952.99872.78762.13191.09701.79842.18223.06972.4393
C123.38534.22383.93023.24512.36633.11291.47192.34061.53642.21562.18221.09611.0912
H133.48664.34084.06242.99812.90103.84782.12942.77062.17922.43823.06971.09611.7951
H144.35245.22934.75674.26083.24243.78072.08493.29532.21152.80072.43931.09121.7951

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 112.729 C1 C5 O7 110.829
C1 C5 O8 107.983 H2 C1 H3 109.500
H2 C1 H4 109.088 H2 C1 C5 110.019
H3 C1 H4 109.430 H3 C1 C5 110.035
H4 C1 C5 108.748 C5 O7 C12 106.963
C5 O8 C9 106.110 H6 C5 O7 106.963
H6 C5 O8 110.919 O7 C5 O8 107.301
O7 C12 C9 103.002 O7 C12 H13 111.186
O7 C12 H14 107.943 O8 C9 H10 107.557
O8 C9 H11 111.417 O8 C9 C12 102.192
C9 C12 H13 110.625 C9 C12 H14 113.542
H10 C9 H11 110.606 H10 C9 C12 113.934
H11 C9 C12 110.820 H13 C12 H14 110.312
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.561      
2 H 0.200      
3 H 0.200      
4 H 0.206      
5 C 0.254      
6 H 0.195      
7 O -0.484      
8 O -0.483      
9 C -0.173      
10 H 0.210      
11 H 0.197      
12 C -0.162      
13 H 0.196      
14 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.153 -0.068 0.294 1.192
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.692 -0.063 -1.143
y -0.063 -41.422 1.189
z -1.143 1.189 -35.591
Traceless
 xyz
x 7.814 -0.063 -1.143
y -0.063 -8.280 1.189
z -1.143 1.189 0.466
Polar
3z2-r20.932
x2-y210.730
xy-0.063
xz-1.143
yz1.189


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> 150.777
(<r2>)1/2 12.279