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=FULL/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=FULL/6-31G**
 hartrees
Energy at 0K-342.637550
Energy at 298.15K 
HF Energy-341.660898
Nuclear repulsion energy270.697188
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=FULL/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 3257 3043 12.79      
2 A1 3053 2852 168.13      
3 A1 1585 1481 3.92      
4 A1 1272 1188 22.03      
5 A1 1009 943 80.49      
6 A1 764 714 0.96      
7 A1 484 453 20.30      
8 A2 1430 1336 0.00      
9 A2 1280 1196 0.00      
10 A2 1022 955 0.00      
11 E 3254 3040 30.65      
11 E 3254 3040 30.65      
12 E 3038 2839 21.74      
12 E 3038 2839 21.74      
13 E 1565 1462 0.02      
13 E 1565 1462 0.02      
14 E 1484 1387 38.47      
14 E 1484 1387 38.47      
15 E 1363 1273 1.34      
15 E 1363 1273 1.34      
16 E 1224 1143 229.10      
16 E 1224 1143 229.10      
17 E 1113 1040 52.36      
17 E 1113 1040 52.36      
18 E 986 922 37.04      
18 E 986 922 37.04      
19 E 530 495 9.89      
19 E 530 495 9.89      
20 E 308 288 0.12      
20 E 308 288 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 22441.8 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 20969.7 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=FULL/6-31G**
ABC
0.17602 0.17602 0.09802

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.323 0.185
C2 -1.146 -0.662 0.185
C3 1.146 -0.662 0.185
O4 -1.167 0.674 -0.271
O5 1.167 0.674 -0.271
O6 0.000 -1.347 -0.271
H7 0.000 2.325 -0.229
H8 0.000 1.350 1.285
H9 -2.013 -1.162 -0.229
H10 -1.169 -0.675 1.285
H11 2.013 -1.162 -0.229
H12 1.169 -0.675 1.285

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.29182.29181.41091.41092.70901.08361.10013.22522.56303.22522.5630
C22.29182.29181.41092.70901.41093.22522.56301.08361.10013.22522.5630
C32.29182.29182.70901.41091.41093.22522.56303.22522.56301.08361.1001
O41.41091.41092.70902.33372.33372.02212.05842.02212.05843.67223.1135
O51.41092.70901.41092.33372.33372.02212.05843.67223.11352.02212.0584
O62.70901.41091.41092.33372.33373.67223.11352.02212.05842.02212.0584
H71.08363.22523.22522.02212.02213.67221.80034.02643.55754.02643.5575
H81.10012.56302.56302.05842.05843.11351.80033.55752.33833.55752.3383
H93.22521.08363.22522.02213.67222.02214.02643.55751.80034.02643.5575
H102.56301.10012.56302.05843.11352.05843.55752.33831.80033.55752.3383
H113.22523.22521.08363.67222.02212.02214.02643.55754.02643.55751.8003
H122.56302.56301.10013.11352.05842.05843.55752.33833.55752.33831.8003

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 108.617 C1 O5 C3 108.617
C2 O6 C3 108.617 O4 C1 O5 111.588
O4 C1 H7 107.589 O4 C1 H8 109.501
O4 C2 O6 111.588 O4 C2 H9 107.589
O4 C2 H10 109.501 O5 C1 H7 107.589
O5 C1 H8 109.501 O5 C3 O6 111.588
O5 C3 H11 107.589 O5 C3 H12 109.501
O6 C2 H9 107.589 O6 C2 H10 109.501
O6 C3 H11 107.589 O6 C3 H12 109.501
H7 C1 H8 111.055 H9 C2 H10 111.055
H11 C3 H12 111.055
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability