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-Dioxane)

using model chemistry: MP2=FULL/STO-3G

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=FULL/STO-3G
 hartrees
Energy at 0K-302.279402
Energy at 298.15K-302.290448
Nuclear repulsion energy257.729966
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=FULL/STO-3G
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' 3534 3142 1.96      
2 A' 3480 3093 7.93      
3 A' 3452 3069 4.09      
4 A' 3413 3034 1.10      
5 A' 3341 2970 19.01      
6 A' 3274 2910 30.60      
7 A' 1705 1516 0.69      
8 A' 1688 1501 0.32      
9 A' 1674 1488 4.31      
10 A' 1560 1386 32.54      
11 A' 1429 1270 3.54      
12 A' 1292 1149 8.14      
13 A' 1264 1124 23.67      
14 A' 1177 1046 1.22      
15 A' 1045 929 14.55      
16 A' 986 877 1.37      
17 A' 918 816 0.70      
18 A' 656 583 4.00      
19 A' 501 445 1.48      
20 A' 439 391 8.42      
21 A' 245 218 0.97      
22 A" 3478 3092 1.46      
23 A" 3340 2969 9.96      
24 A" 1698 1509 1.24      
25 A" 1569 1395 21.79      
26 A" 1537 1366 4.26      
27 A" 1482 1317 8.19      
28 A" 1429 1270 0.53      
29 A" 1356 1205 14.07      
30 A" 1314 1168 0.01      
31 A" 1260 1120 17.48      
32 A" 1137 1011 9.96      
33 A" 1000 889 4.27      
34 A" 992 882 0.11      
35 A" 500 444 2.88      
36 A" 275 245 1.98      

Unscaled Zero Point Vibrational Energy (zpe) 29720.3 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 26418.4 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=FULL/STO-3G
ABC
0.15979 0.14964 0.08712

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.674 -1.183 0.000
O2 0.026 -0.804 1.227
O3 0.026 -0.804 -1.227
C4 0.026 0.663 1.272
C5 0.026 0.663 -1.272
C6 0.709 1.277 0.000
H7 -0.719 -2.298 0.000
H8 -1.722 -0.771 0.000
H9 0.577 0.950 2.193
H10 -1.016 1.056 1.354
H11 0.577 0.950 -2.193
H12 -1.016 1.056 -1.354
H13 1.785 1.025 0.000
H14 0.604 2.377 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.46231.46232.34892.34892.82211.11541.12573.30502.63923.30502.63923.30503.7830
O21.46232.45331.46832.89742.51022.07132.13552.07692.13623.88233.34762.81863.4583
O31.46232.45332.89741.46832.51022.07132.13553.88233.34762.07692.13622.81863.4583
C42.34891.46832.89742.54321.56843.30772.59431.11081.11673.51952.85202.20052.2110
C52.34892.89741.46832.54321.56843.30772.59433.51952.85201.11081.11672.20052.2110
C62.82212.51022.51021.56841.56843.84913.17872.22092.20422.22092.20421.10501.1056
H71.11542.07132.07133.30773.30773.84911.82634.12733.62924.12733.62924.16054.8586
H81.12572.13552.13552.59432.59433.17871.82633.61312.38153.61312.38153.94013.9147
H93.30502.07693.88231.11083.51952.22094.12733.61311.80344.38543.88942.50482.6164
H102.63922.13623.34761.11672.85202.20423.62922.38151.80343.88942.70783.11152.4908
H113.30503.88232.07693.51951.11082.22094.12733.61314.38543.88941.80342.50482.6164
H122.63923.34762.13622.85201.11672.20423.62922.38153.88942.70781.80343.11152.4908
H133.30502.81862.81862.20052.20051.10504.16053.94012.50483.11152.50483.11151.7953
H143.78303.45833.45832.21102.21101.10564.85863.91472.61642.49082.61642.49081.7953

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 106.546 C1 O3 C5 106.546
O2 C1 O3 114.031 O2 C1 H7 106.155
O2 C1 H8 110.532 O2 C4 C6 111.463
O2 C4 H9 106.451 O2 C4 H10 110.727
O3 C1 H7 106.155 O3 C1 H8 110.532
O3 C5 C6 111.463 O3 C5 H11 106.451
O3 C5 H12 110.727 C4 C6 C5 108.346
C4 C6 H13 109.579 C4 C6 H14 110.358
C5 C6 H13 109.579 C5 C6 H14 110.358
C6 C4 H9 110.821 C6 C4 H10 109.194
C6 C5 H11 110.821 C6 C5 H12 109.194
H7 C1 H8 109.156 H9 C4 H10 108.112
H11 C5 H12 108.112 H13 C6 H14 108.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability