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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-304.732752
Energy at 298.15K-304.743967
Nuclear repulsion energy259.120885
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 MP2/3-21G
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' 3197 3051 28.66      
2 A' 3174 3030 20.79      
3 A' 3163 3019 12.42      
4 A' 3107 2965 13.22      
5 A' 3038 2899 79.63      
6 A' 2994 2858 70.96      
7 A' 1600 1528 8.83      
8 A' 1583 1511 1.95      
9 A' 1560 1489 4.40      
10 A' 1441 1375 16.70      
11 A' 1342 1281 2.54      
12 A' 1215 1160 6.11      
13 A' 1151 1099 70.39      
14 A' 1104 1054 49.47      
15 A' 992 947 46.39      
16 A' 884 844 2.68      
17 A' 821 784 9.31      
18 A' 621 593 6.73      
19 A' 479 458 1.53      
20 A' 419 400 13.81      
21 A' 271 259 2.86      
22 A" 3165 3021 31.75      
23 A" 3032 2894 15.89      
24 A" 1586 1514 0.54      
25 A" 1483 1416 6.62      
26 A" 1430 1365 0.81      
27 A" 1421 1356 6.35      
28 A" 1340 1279 0.05      
29 A" 1292 1233 12.36      
30 A" 1247 1190 5.80      
31 A" 1049 1002 5.89      
32 A" 1014 968 76.64      
33 A" 946 903 20.54      
34 A" 858 819 12.52      
35 A" 447 426 9.66      
36 A" 251 240 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 27357.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 26112.8 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 MP2/3-21G
ABC
0.15953 0.15299 0.08793

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.651 -1.231 0.000
O2 0.013 -0.786 1.217
O3 0.013 -0.786 -1.217
C4 0.013 0.695 1.256
C5 0.013 0.695 -1.256
C6 0.723 1.248 0.000
H7 -0.598 -2.317 0.000
H8 -1.696 -0.876 0.000
H9 0.533 0.967 2.176
H10 -1.021 1.072 1.292
H11 0.533 0.967 -2.176
H12 -1.021 1.072 -1.292
H13 1.758 0.895 0.000
H14 0.708 2.344 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.45591.45592.39332.39332.83371.08791.10353.31162.66643.31162.66643.21273.8239
O21.45592.43341.48182.88222.47382.04912.10012.06462.12813.85413.28912.71103.4289
O31.45592.43342.88221.48182.47382.04912.10013.85413.28912.06462.12812.71103.4289
C42.39331.48182.88222.51151.54453.32062.63991.09151.10183.48182.77592.15872.1855
C52.39332.88221.48182.51151.54453.32062.63993.48182.77591.09151.10182.15872.1855
C62.83372.47382.47381.54451.54453.80183.21902.20262.17792.20262.17791.09341.0959
H71.08792.04912.04913.32063.32063.80181.81174.09873.65194.09873.65193.98364.8404
H81.10352.10012.10012.63992.63993.21901.81173.61972.43333.61972.43333.88164.0184
H93.31162.06463.85411.09153.48182.20264.09873.61971.79164.35273.80262.49822.5813
H102.66642.12813.28911.10182.77592.17793.65192.43331.79163.80262.58463.07012.5056
H113.31163.85412.06463.48181.09152.20264.09873.61974.35273.80261.79162.49822.5813
H122.66643.28912.12812.77591.10182.17793.65192.43333.80262.58461.79163.07012.5056
H133.21272.71102.71102.15872.15871.09343.98363.88162.49823.07012.49823.07011.7888
H143.82393.42893.42892.18552.18551.09594.84044.01842.58132.50562.58132.50561.7888

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 109.110 C1 O3 C5 109.110
O2 C1 O3 113.383 O2 C1 H7 106.431
O2 C1 H8 109.516 O2 C4 C6 109.639
O2 C4 H9 105.698 O2 C4 H10 110.036
O3 C1 H7 106.431 O3 C1 H8 109.516
O3 C5 C6 109.639 O3 C5 H11 105.698
O3 C5 H12 110.036 C4 C6 C5 108.793
C4 C6 H13 108.631 C4 C6 H14 110.577
C5 C6 H13 108.631 C5 C6 H14 110.577
C6 C4 H9 112.214 C6 C4 H10 109.640
C6 C5 H11 112.214 C6 C5 H12 109.640
H7 C1 H8 111.529 H9 C4 H10 109.543
H11 C5 H12 109.543 H13 C6 H14 109.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability