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All results from a given calculation for C4H8O2 (1,3-Dioxane)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-58.438407
Energy at 298.15K-58.449449
Nuclear repulsion energy143.664350
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 MP2/CEP-121G
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' 3170 3094 22.86      
2 A' 3112 3038 31.46      
3 A' 3073 2999 30.20      
4 A' 2991 2919 33.80      
5 A' 2957 2886 122.26      
6 A' 2934 2864 62.57      
7 A' 1526 1489 7.74      
8 A' 1504 1468 0.31      
9 A' 1490 1455 6.04      
10 A' 1406 1373 15.84      
11 A' 1284 1253 2.61      
12 A' 1199 1170 7.43      
13 A' 1123 1096 84.21      
14 A' 1065 1039 48.91      
15 A' 956 933 51.63      
16 A' 883 861 2.38      
17 A' 785 766 17.24      
18 A' 602 587 7.28      
19 A' 448 437 1.11      
20 A' 391 381 13.12      
21 A' 257 251 4.12      
22 A" 3109 3035 39.67      
23 A" 2950 2880 21.03      
24 A" 1509 1472 1.66      
25 A" 1428 1394 9.68      
26 A" 1391 1358 1.65      
27 A" 1378 1345 1.04      
28 A" 1284 1253 0.15      
29 A" 1227 1197 14.59      
30 A" 1189 1161 4.66      
31 A" 1049 1024 1.49      
32 A" 965 941 98.74      
33 A" 891 870 24.06      
34 A" 809 789 31.76      
35 A" 427 417 11.46      
36 A" 243 237 2.77      

Unscaled Zero Point Vibrational Energy (zpe) 26501.1 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 25865.0 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 MP2/CEP-121G
ABC
0.15547 0.15036 0.08594

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.657 -1.260 0.000
O2 0.014 -0.791 1.223
O3 0.014 -0.791 -1.223
C4 0.014 0.709 1.271
C5 0.014 0.709 -1.271
C6 0.723 1.268 0.000
H7 -0.578 -2.349 0.000
H8 -1.707 -0.897 0.000
H9 0.543 0.960 2.199
H10 -1.036 1.062 1.328
H11 0.543 0.960 -2.199
H12 -1.036 1.062 -1.328
H13 1.771 0.927 0.000
H14 0.704 2.374 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.47241.47242.43812.43812.88041.09191.11063.34702.70133.34702.70133.26803.8805
O21.47242.44651.50062.91032.49732.06782.11452.07232.13223.87973.32292.74443.4619
O31.47242.44652.91031.50062.49732.06782.11453.87973.32292.07232.13222.74443.4619
C42.43811.50062.91032.54171.55873.36432.67541.09691.10963.51842.82482.17892.2049
C52.43812.91031.50062.54171.55873.36432.67543.51842.82481.09691.10962.17892.2049
C62.88042.49732.49731.55871.55873.84393.25452.22742.21352.22742.21351.10191.1059
H71.09192.06782.06783.36433.36433.84391.83944.12773.68874.12773.68874.03104.8937
H81.11062.11452.11452.67542.67543.25451.83943.65302.45953.65302.45953.92724.0633
H93.34702.07233.87971.09693.51842.22744.12773.65301.80654.39723.86512.51832.6190
H102.70132.13223.32291.10962.82482.21353.68872.45951.80653.86512.65513.10802.5518
H113.34703.87972.07233.51841.09692.22744.12773.65304.39723.86511.80652.51832.6190
H122.70133.32292.13222.82481.10962.21353.68872.45953.86512.65511.80653.10802.5518
H133.26802.74442.74442.17892.17891.10194.03103.92722.51833.10802.51833.10801.7975
H143.88053.46193.46192.20492.20491.10594.89374.06332.61902.55182.61902.55181.7975

picture of 1,3-Dioxane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C4 110.181 C1 O3 C5 110.181
O2 C1 O3 112.354 O2 C1 H7 106.542
O2 C1 H8 109.086 O2 C4 C6 109.419
O2 C4 H9 104.776 O2 C4 H10 108.622
O3 C1 H7 106.542 O3 C1 H8 109.086
O3 C5 C6 109.419 O3 C5 H11 104.776
O3 C5 H12 108.622 C4 C6 C5 109.242
C4 C6 H13 108.746 C4 C6 H14 110.530
C5 C6 H13 108.746 C5 C6 H14 110.530
C6 C4 H9 112.865 C6 C4 H10 110.987
C6 C5 H11 112.865 C6 C5 H12 110.987
H7 C1 H8 113.261 H9 C4 H10 109.918
H11 C5 H12 109.918 H13 C6 H14 109.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability