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: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A1
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-342.565966
Energy at 298.15K-342.575774
HF Energy-341.651129
Nuclear repulsion energy270.122194
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 MP2/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3235 3051 11.50      
2 A1 3030 2857 160.23      
3 A1 1584 1494 4.66      
4 A1 1271 1199 20.58      
5 A1 1008 950 80.49      
6 A1 763 720 0.67      
7 A1 485 457 21.69      
8 A2 1427 1346 0.00      
9 A2 1277 1205 0.00      
10 A2 1018 960 0.00      
11 E 3232 3048 27.83      
11 E 3232 3048 27.83      
12 E 3015 2843 19.32      
12 E 3015 2843 19.32      
13 E 1564 1475 0.17      
13 E 1564 1475 0.17      
14 E 1480 1396 33.93      
14 E 1480 1396 33.93      
15 E 1360 1283 1.03      
15 E 1360 1283 1.03      
16 E 1223 1153 226.19      
16 E 1223 1153 226.19      
17 E 1113 1050 57.72      
17 E 1113 1050 57.72      
18 E 984 927 38.63      
18 E 984 927 38.63      
19 E 529 499 10.16      
19 E 529 499 10.16      
20 E 308 290 0.12      
20 E 308 290 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 22356.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 21082.3 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 MP2/6-31G*
ABC
0.17531 0.17531 0.09763

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.459 0.051
C2 -1.263 -0.729 0.051
C3 1.263 -0.729 0.051
O4 -1.265 0.730 -0.059
O5 1.265 0.730 -0.059
O6 0.000 -1.461 -0.059
H7 0.000 2.094 -0.793
H8 0.000 2.012 0.958
H9 -1.814 -1.047 -0.793
H10 -1.743 -1.006 0.958
H11 1.814 -1.047 -0.793
H12 1.743 -1.006 0.958

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.52702.52701.46391.46392.92161.05671.06233.20683.15223.20683.1522
C22.52702.52701.46392.92161.46393.20683.15221.05671.06233.20683.1522
C32.52702.52702.92161.46391.46393.20683.15223.20683.15221.05671.0623
O41.46391.46392.92162.52992.52992.00022.06802.00022.06803.63033.6186
O51.46392.92161.46392.52992.52992.00022.06803.63033.61862.00022.0680
O62.92161.46391.46392.52992.52993.63033.61862.00022.06802.00022.0680
H71.05673.20683.20682.00022.00023.63031.75293.62773.96453.62773.9645
H81.06233.15223.15222.06802.06803.61861.75293.96453.48553.96453.4855
H93.20681.05673.20682.00023.63032.00023.62773.96451.75293.62773.9645
H103.15221.06233.15222.06803.61862.06803.96453.48551.75293.96453.4855
H113.20683.20681.05673.63032.00022.00023.62773.96453.62773.96451.7529
H123.15223.15221.06233.61862.06802.06803.96453.48553.96453.48551.7529

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 119.332 C1 O5 C3 119.332
C2 O6 C3 119.332 O4 C1 O5 119.560
O4 C1 H7 103.862 O4 C1 H8 108.853
O4 C2 O6 119.560 O4 C2 H9 103.862
O4 C2 H10 108.853 O5 C1 H7 103.862
O5 C1 H8 108.853 O5 C3 O6 119.560
O5 C3 H11 103.862 O5 C3 H12 108.853
O6 C2 H9 103.862 O6 C2 H10 108.853
O6 C3 H11 103.862 O6 C3 H12 108.853
H7 C1 H8 111.632 H9 C2 H10 111.632
H11 C3 H12 111.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability