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

using model chemistry: MP2/CEP-31G

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-31G
 hartrees
Energy at 0K-58.363876
Energy at 298.15K-58.374890
Nuclear repulsion energy142.980763
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-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' 3217 3109 31.33      
2 A' 3165 3059 51.93      
3 A' 3137 3031 34.50      
4 A' 3053 2950 49.76      
5 A' 3023 2921 140.90      
6 A' 3002 2901 98.53      
7 A' 1529 1477 8.48      
8 A' 1512 1461 0.69      
9 A' 1493 1443 6.56      
10 A' 1402 1355 13.57      
11 A' 1292 1248 3.77      
12 A' 1192 1152 8.09      
13 A' 1126 1088 70.45      
14 A' 1069 1033 61.14      
15 A' 962 929 47.91      
16 A' 887 857 1.76      
17 A' 786 760 13.56      
18 A' 605 584 7.77      
19 A' 461 446 1.66      
20 A' 400 386 13.89      
21 A' 253 244 4.64      
22 A" 3161 3054 42.67      
23 A" 3018 2917 33.03      
24 A" 1517 1466 1.04      
25 A" 1427 1379 8.99      
26 A" 1398 1351 1.07      
27 A" 1377 1331 2.21      
28 A" 1286 1243 0.30      
29 A" 1245 1203 14.79      
30 A" 1198 1157 5.35      
31 A" 1057 1021 0.92      
32 A" 976 943 95.86      
33 A" 904 874 24.91      
34 A" 812 784 30.29      
35 A" 432 417 11.78      
36 A" 242 234 2.82      

Unscaled Zero Point Vibrational Energy (zpe) 26805.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 25901.8 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/CEP-31G
ABC
0.15412 0.14891 0.08507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.656 -1.266 0.000
O2 0.015 -0.795 1.228
O3 0.015 -0.795 -1.228
C4 0.015 0.709 1.279
C5 0.015 0.709 -1.279
C6 0.720 1.280 0.000
H7 -0.572 -2.362 0.000
H8 -1.712 -0.903 0.000
H9 0.555 0.959 2.210
H10 -1.042 1.063 1.344
H11 0.555 0.959 -2.210
H12 -1.042 1.063 -1.344
H13 1.783 0.963 0.000
H14 0.672 2.393 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.47631.47632.44702.44702.89371.09901.11683.36182.71663.36182.71663.30403.8929
O21.47632.45571.50442.92362.51152.07572.12142.08142.14033.89693.34372.77923.4789
O31.47632.45572.92361.50442.51152.07572.12143.89693.34372.08142.14032.77923.4789
C42.44701.50442.92362.55891.56833.37812.68641.10471.11623.53982.85002.19722.2150
C52.44702.92361.50442.55891.56833.37812.68643.53982.85001.10471.11622.19722.2150
C62.89372.51152.51151.56831.56833.86403.26752.23912.22602.23912.22601.10951.1145
H71.09902.07572.07573.37813.37813.86401.85144.14533.70914.14533.70914.07454.9153
H81.11682.12142.12142.68642.68643.26751.85143.67302.47393.67302.47393.96184.0680
H93.36182.08143.89691.10473.53982.23914.14533.67301.81984.41983.89742.52802.6371
H102.71662.14033.34371.11622.85002.22603.70912.47391.81983.89742.68743.12962.5520
H113.36183.89692.08143.53981.10472.23914.14533.67304.41983.89741.81982.52802.6371
H122.71663.34372.14032.85001.11622.22603.70912.47393.89742.68741.81983.12962.5520
H133.30402.77922.77922.19722.19721.10954.07453.96182.52803.12962.52803.12961.8109
H143.89293.47893.47892.21502.21501.11454.91534.06802.63712.55202.63712.55201.8109

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 110.351 C1 O3 C5 110.351
O2 C1 O3 112.550 O2 C1 H7 106.491
O2 C1 H8 109.002 O2 C4 C6 109.625
O2 C4 H9 104.786 O2 C4 H10 108.602
O3 C1 H7 106.491 O3 C1 H8 109.002
O3 C5 C6 109.625 O3 C5 H11 104.786
O3 C5 H12 108.602 C4 C6 C5 109.336
C4 C6 H13 109.073 C4 C6 H14 110.154
C5 C6 H13 109.073 C5 C6 H14 110.154
C6 C4 H9 112.636 C6 C4 H10 110.906
C6 C5 H11 112.636 C6 C5 H12 110.906
H7 C1 H8 113.347 H9 C4 H10 110.045
H11 C5 H12 110.045 H13 C6 H14 109.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability