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: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-340.402945
Energy at 298.15K 
HF Energy-339.753615
Nuclear repulsion energy262.852182
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 CCD/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 3172 3034 13.50      
2 A1 2982 2853 155.75      
3 A1 1594 1524 7.82      
4 A1 1234 1180 8.19      
5 A1 956 915 78.35      
6 A1 714 683 1.06      
7 A1 435 416 27.29      
8 A2 1414 1353 0.00      
9 A2 1257 1203 0.00      
10 A2 994 951 0.00      
11 E 3165 3027 24.92      
11 E 3165 3027 24.92      
12 E 2969 2839 19.34      
12 E 2969 2839 19.34      
13 E 1573 1505 0.31      
13 E 1573 1505 0.31      
14 E 1470 1406 23.54      
14 E 1470 1406 23.54      
15 E 1335 1277 0.11      
15 E 1335 1277 0.11      
16 E 1156 1106 141.58      
16 E 1156 1106 141.58      
17 E 1061 1015 75.90      
17 E 1061 1015 75.90      
18 E 909 869 11.87      
18 E 909 869 11.87      
19 E 509 487 14.35      
19 E 509 487 14.35      
20 E 283 270 0.21      
20 E 283 270 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 21804.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 20856.0 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 CCD/3-21G*
ABC
0.16557 0.16557 0.09174

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.371 0.188
C2 -1.187 -0.685 0.188
C3 1.187 -0.685 0.188
O4 -1.206 0.696 -0.271
O5 1.206 0.696 -0.271
O6 0.000 -1.393 -0.271
H7 0.000 2.366 -0.256
H8 0.000 1.420 1.293
H9 -2.049 -1.183 -0.256
H10 -1.230 -0.710 1.293
H11 2.049 -1.183 -0.256
H12 1.230 -0.710 1.293

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.37442.37441.45611.45612.80141.08981.10563.30442.65743.30442.6574
C22.37442.37441.45612.80141.45613.30442.65741.08981.10563.30442.6574
C32.37442.37442.80141.45611.45613.30442.65743.30442.65741.08981.1056
O41.45611.45612.80142.41232.41232.06002.10302.06002.10303.75903.2180
O51.45612.80141.45612.41232.41232.06002.10303.75903.21802.06002.1030
O62.80141.45611.45612.41232.41233.75903.21802.06002.10302.06002.1030
H71.08983.30443.30442.06002.06003.75901.81454.09843.65684.09843.6568
H81.10562.65742.65742.10302.10303.21801.81453.65682.45943.65682.4594
H93.30441.08983.30442.06003.75902.06004.09843.65681.81454.09843.6568
H102.65741.10562.65742.10303.21802.10303.65682.45941.81453.65682.4594
H113.30443.30441.08983.75902.06002.06004.09843.65684.09843.65681.8145
H122.65742.65741.10563.21802.10302.10303.65682.45943.65682.45941.8145

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 109.236 C1 O5 C3 109.236
C2 O6 C3 109.236 O4 C1 O5 111.858
O4 C1 H7 107.144 O4 C1 H8 109.596
O4 C2 O6 111.858 O4 C2 H9 107.144
O4 C2 H10 109.596 O5 C1 H7 107.144
O5 C1 H8 109.596 O5 C3 O6 111.858
O5 C3 H11 107.144 O5 C3 H12 109.596
O6 C2 H9 107.144 O6 C2 H10 109.596
O6 C3 H11 107.144 O6 C3 H12 109.596
H7 C1 H8 111.479 H9 C2 H10 111.479
H11 C3 H12 111.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability