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

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-340.414733
Energy at 298.15K 
HF Energy-339.752148
Nuclear repulsion energy262.245789
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 QCISD/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 3163 3040 13.38      
2 A1 2968 2853 159.38      
3 A1 1585 1523 8.80      
4 A1 1227 1179 7.99      
5 A1 942 906 75.88      
6 A1 704 677 0.90      
7 A1 439 422 26.03      
8 A2 1404 1350 0.00      
9 A2 1249 1201 0.00      
10 A2 949 912 0.00      
11 E 3156 3033 24.80      
11 E 3156 3033 24.80      
12 E 2954 2839 20.33      
12 E 2954 2839 20.33      
13 E 1565 1504 0.40      
13 E 1565 1504 0.40      
14 E 1461 1405 24.27      
14 E 1461 1405 24.27      
15 E 1328 1276 0.32      
15 E 1328 1276 0.32      
16 E 1143 1099 124.98      
16 E 1143 1099 124.97      
17 E 1048 1007 92.81      
17 E 1048 1007 92.81      
18 E 893 859 14.01      
18 E 893 859 14.01      
19 E 504 484 14.43      
19 E 504 484 14.43      
20 E 286 275 0.15      
20 E 286 275 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 21652.9 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 20810.6 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 QCISD/3-21G*
ABC
0.16478 0.16478 0.09139

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.372 0.191
C2 -1.188 -0.686 0.191
C3 1.188 -0.686 0.191
O4 -1.210 0.699 -0.274
O5 1.210 0.699 -0.274
O6 0.000 -1.397 -0.274
H7 0.000 2.371 -0.247
H8 0.000 1.410 1.296
H9 -2.053 -1.185 -0.247
H10 -1.221 -0.705 1.296
H11 2.053 -1.185 -0.247
H12 1.221 -0.705 1.296

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.37692.37691.46091.46092.80811.09011.10633.30892.65113.30892.6511
C22.37692.37691.46092.80811.46093.30892.65111.09011.10633.30892.6511
C32.37692.37692.80811.46091.46093.30892.65113.30892.65111.09011.1063
O41.46091.46092.80812.41972.41972.06422.10652.06422.10653.76793.2165
O51.46092.80811.46092.41972.41972.06422.10653.76793.21652.06422.1065
O62.80811.46091.46092.41972.41973.76793.21652.06422.10652.06422.1065
H71.09013.30893.30892.06422.06423.76791.81784.10643.65134.10643.6513
H81.10632.65112.65112.10652.10653.21651.81783.65132.44203.65132.4420
H93.30891.09013.30892.06423.76792.06424.10643.65131.81784.10643.6513
H102.65111.10632.65112.10653.21652.10653.65132.44201.81783.65132.4420
H113.30893.30891.09013.76792.06422.06424.10643.65134.10643.65131.8178
H122.65112.65111.10633.21652.10652.10653.65132.44203.65132.44201.8178

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 108.886 C1 O5 C3 108.886
C2 O6 C3 108.886 O4 C1 O5 111.826
O4 C1 H7 107.141 O4 C1 H8 109.503
O4 C2 O6 111.826 O4 C2 H9 107.141
O4 C2 H10 109.503 O5 C1 H7 107.141
O5 C1 H8 109.503 O5 C3 O6 111.826
O5 C3 H11 107.141 O5 C3 H12 109.503
O6 C2 H9 107.141 O6 C2 H10 109.503
O6 C3 H11 107.141 O6 C3 H12 109.503
H7 C1 H8 111.710 H9 C2 H10 111.710
H11 C3 H12 111.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability