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All results from a given calculation for C3H6O3 (1,3,5-Trioxane)

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 C1 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-340.375934
Energy at 298.15K 
HF Energy-339.751823
Nuclear repulsion energy262.265222
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 A1 3223 3066 13.91      
2 A1 3015 2868 169.56      
3 A1 1605 1527 8.82      
4 A1 1230 1170 6.66      
5 A1 946 899 74.90      
6 A1 698 664 0.75      
7 A1 443 421 25.01      
8 A2 1423 1353 0.00      
9 A2 1262 1200 0.00      
10 A2 928 883 0.00      
11 E 3217 3061 23.50      
11 E 3217 3061 23.50      
12 E 3002 2856 19.83      
12 E 3002 2856 19.83      
13 E 1586 1508 0.42      
13 E 1586 1508 0.42      
14 E 1478 1406 23.22      
14 E 1478 1406 23.22      
15 E 1338 1273 0.75      
15 E 1338 1273 0.75      
16 E 1148 1093 109.34      
16 E 1148 1093 109.34      
17 E 1048 997 113.56      
17 E 1048 997 113.56      
18 E 892 848 16.44      
18 E 892 848 16.44      
19 E 502 478 14.14      
19 E 502 478 14.14      
20 E 290 276 0.10      
20 E 290 276 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 21887.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 20821.2 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
0.16472 0.16472 0.09141

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.369 0.192
C2 -1.186 -0.685 0.192
C3 1.186 -0.685 0.192
O4 -1.213 0.700 -0.276
O5 1.213 0.700 -0.276
O6 0.000 -1.400 -0.276
H7 0.000 2.366 -0.239
H8 0.000 1.400 1.295
H9 -2.049 -1.183 -0.239
H10 -1.212 -0.700 1.295
H11 2.049 -1.183 -0.239
H12 1.212 -0.700 1.295

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.37132.37131.46211.46212.80881.08611.10293.30092.63913.30092.6391
C22.37132.37131.46212.80881.46213.30092.63911.08611.10293.30092.6391
C32.37132.37132.80881.46211.46213.30092.63913.30092.63911.08611.1029
O41.46211.46212.80882.42552.42552.06052.10442.06052.10443.76613.2107
O51.46212.80881.46212.42552.42552.06052.10443.76613.21072.06052.1044
O62.80881.46211.46212.42552.42553.76613.21072.06052.10442.06052.1044
H71.08613.30093.30092.06052.06053.76611.81304.09733.63604.09733.6360
H81.10292.63912.63912.10442.10443.21071.81303.63602.42433.63602.4243
H93.30091.08613.30092.06053.76612.06054.09733.63601.81304.09743.6360
H102.63911.10292.63912.10443.21072.10443.63602.42431.81303.63602.4243
H113.30093.30091.08613.76612.06052.06054.09733.63604.09743.63601.8130
H122.63912.63911.10293.21072.10442.10443.63602.42433.63602.42431.8130

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 108.369 C1 O5 C3 108.369
C2 O6 C3 108.368 O4 C1 O5 112.079
O4 C1 H7 106.996 O4 C1 H8 109.459
O4 C2 O6 112.079 O4 C2 H9 106.996
O4 C2 H10 109.459 O5 C1 H7 106.996
O5 C1 H8 109.459 O5 C3 O6 112.079
O5 C3 H11 106.996 O5 C3 H12 109.459
O6 C2 H9 106.996 O6 C2 H10 109.459
O6 C3 H11 106.996 O6 C3 H12 109.459
H7 C1 H8 111.839 H9 C2 H10 111.839
H11 C3 H12 111.839
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability