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: HF/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 HF/6-31G**
 hartrees
Energy at 0K-341.664937
Energy at 298.15K 
HF Energy-341.664937
Nuclear repulsion energy273.901091
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 HF/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 3331 3006 20.19      
2 A1 3154 2847 216.99      
3 A1 1685 1521 1.76      
4 A1 1372 1238 40.63      
5 A1 1086 980 100.80      
6 A1 845 763 1.04      
7 A1 466 421 26.57      
8 A2 1537 1387 0.00      
9 A2 1375 1241 0.00      
10 A2 1171 1057 0.00      
11 E 3325 3001 53.18      
11 E 3325 3001 53.18      
12 E 3131 2826 28.04      
12 E 3131 2826 28.04      
13 E 1663 1501 0.03      
13 E 1663 1501 0.03      
14 E 1599 1444 64.78      
14 E 1599 1444 64.78      
15 E 1458 1316 6.31      
15 E 1458 1316 6.31      
16 E 1349 1218 332.80      
16 E 1349 1218 332.80      
17 E 1198 1082 47.04      
17 E 1198 1082 47.04      
18 E 1070 966 33.49      
18 E 1070 966 33.49      
19 E 580 523 10.33      
19 E 580 523 10.33      
20 E 294 266 0.36      
20 E 294 266 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 23678.8 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 21372.5 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 HF/6-31G**
ABC
0.18035 0.18035 0.09969

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.326 0.169
C2 -1.148 -0.663 0.169
C3 1.148 -0.663 0.169
O4 -1.144 0.661 -0.248
O5 1.144 0.661 -0.248
O6 0.000 -1.321 -0.248
H7 0.000 2.304 -0.283
H8 0.000 1.413 1.258
H9 -1.995 -1.152 -0.283
H10 -1.223 -0.706 1.258
H11 1.995 -1.152 -0.283
H12 1.223 -0.706 1.258

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 O6 H7 H8 H9 H10 H11 H12
C12.29622.29621.38771.38772.67961.07741.09233.21312.60983.21312.6098
C22.29622.29631.38772.67961.38773.21312.60981.07741.09233.21312.6098
C32.29622.29632.67961.38771.38773.21312.60983.21312.60981.07741.0923
O41.38771.38772.67962.28832.28832.00272.03542.00272.03543.62533.1211
O51.38772.67961.38772.28832.28832.00272.03543.62533.12112.00272.0354
O62.67961.38771.38772.28832.28833.62533.12112.00272.03542.00272.0354
H71.07743.21313.21312.00272.00273.62531.77983.99063.59603.99063.5960
H81.09232.60982.60982.03542.03543.12111.77983.59602.44663.59602.4466
H93.21311.07743.21312.00273.62532.00273.99063.59601.77983.99063.5960
H102.60981.09232.60982.03543.12112.03543.59602.44661.77983.59602.4466
H113.21313.21311.07743.62532.00272.00273.99063.59603.99063.59601.7798
H122.60982.60981.09233.12112.03542.03543.59602.44663.59602.44661.7798

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 111.662 C1 O5 C3 111.662
C2 O6 C3 111.662 O4 C1 O5 111.076
O4 C1 H7 108.010 O4 C1 H8 109.745
O4 C2 O6 111.076 O4 C2 H9 108.010
O4 C2 H10 109.745 O5 C1 H7 108.010
O5 C1 H8 109.745 O5 C3 O6 111.076
O5 C3 H11 108.010 O5 C3 H12 109.745
O6 C2 H9 108.010 O6 C2 H10 109.745
O6 C3 H11 108.010 O6 C3 H12 109.745
H7 C1 H8 110.223 H9 C2 H10 110.223
H11 C3 H12 110.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.384      
2 C 0.384      
3 C 0.384      
4 O -0.625      
5 O -0.625      
6 O -0.625      
7 H 0.148      
8 H 0.094      
9 H 0.148      
10 H 0.094      
11 H 0.148      
12 H 0.094      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.198 2.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.689 0.000 0.000
y 0.000 -34.689 0.000
z 0.000 0.000 -35.409
Traceless
 xyz
x 0.360 0.000 0.000
y 0.000 0.360 0.000
z 0.000 0.000 -0.720
Polar
3z2-r2-1.440
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.625 0.000 0.000
y 0.000 5.625 0.000
z 0.000 0.000 4.823


<r2> (average value of r2) Å2
<r2> 124.232
(<r2>)1/2 11.146