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 C3H6O3 (1,3,5-Trioxane)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-342.762414
Energy at 298.15K 
HF Energy-341.741780
Nuclear repulsion energy271.376474
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 MP2/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3213 3053 9.07      
2 A1 3009 2859 183.65      
3 A1 1549 1472 4.24      
4 A1 1265 1202 26.47      
5 A1 1011 960 82.14      
6 A1 771 732 0.81      
7 A1 493 468 18.79      
8 A2 1433 1362 0.00      
9 A2 1285 1221 0.00      
10 A2 1017 966 0.00      
11 E 3211 3051 29.72      
11 E 3211 3051 29.72      
12 E 2993 2844 22.30      
12 E 2993 2844 22.30      
13 E 1532 1456 1.23      
13 E 1532 1456 1.23      
14 E 1484 1411 31.39      
14 E 1484 1411 31.39      
15 E 1365 1297 2.48      
15 E 1365 1297 2.48      
16 E 1222 1161 228.54      
16 E 1222 1161 228.54      
17 E 1106 1051 54.28      
17 E 1106 1051 54.28      
18 E 991 942 39.55      
18 E 991 942 39.55      
19 E 532 506 8.39      
19 E 532 506 8.39      
20 E 315 299 0.16      
20 E 315 299 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 22272.9 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 21163.7 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 MP2/6-311G**
ABC
0.17699 0.17699 0.09865

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.317 0.184
C2 -1.141 -0.659 0.184
C3 1.141 -0.659 0.184
O4 -1.164 0.672 -0.271
O5 1.164 0.672 -0.271
O6 0.000 -1.344 -0.271
H7 0.000 2.322 -0.230
H8 0.000 1.340 1.289
H9 -2.011 -1.161 -0.230
H10 -1.161 -0.670 1.289
H11 2.011 -1.161 -0.230
H12 1.161 -0.670 1.289

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.28122.28121.40641.40642.69991.08701.10443.21822.55243.21822.5524
C22.28122.28121.40642.69991.40643.21822.55241.08701.10443.21822.5524
C32.28122.28122.69991.40641.40643.21822.55243.21822.55241.08701.1044
O41.40641.40642.69992.32822.32822.01982.05722.01982.05723.66653.1042
O51.40642.69991.40642.32822.32822.01982.05723.66653.10422.01982.0572
O62.69991.40641.40642.32822.32823.66653.10422.01982.05722.01982.0572
H71.08703.21823.21822.01982.01983.66651.80824.02203.55044.02203.5504
H81.10442.55242.55242.05722.05723.10421.80823.55042.32113.55042.3211
H93.21821.08703.21822.01983.66652.01984.02203.55041.80824.02203.5504
H102.55241.10442.55242.05723.10422.05723.55042.32111.80823.55042.3211
H113.21823.21821.08703.66652.01982.01984.02203.55044.02203.55041.8082
H122.55242.55241.10443.10422.05722.05723.55042.32113.55042.32111.8082

picture of 1,3,5-Trioxane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 C2 108.386 C1 O5 C3 108.386
C2 O6 C3 108.386 O4 C1 O5 111.723
O4 C1 H7 107.504 O4 C1 H8 109.448
O4 C2 O6 111.723 O4 C2 H9 107.504
O4 C2 H10 109.448 O5 C1 H7 107.504
O5 C1 H8 109.448 O5 C3 O6 111.723
O5 C3 H11 107.504 O5 C3 H12 109.448
O6 C2 H9 107.504 O6 C2 H10 109.448
O6 C3 H11 107.504 O6 C3 H12 109.448
H7 C1 H8 111.202 H9 C2 H10 111.202
H11 C3 H12 111.202
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability