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All results from a given calculation for C4H8O2 (1,4-Dioxane)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-57.833741
Energy at 298.15K-57.845148
Nuclear repulsion energy146.316336
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/CEP-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 Ag 3337 3008 0.00      
2 Ag 3240 2921 0.00      
3 Ag 1647 1484 0.00      
4 Ag 1546 1393 0.00      
5 Ag 1417 1278 0.00      
6 Ag 1258 1134 0.00      
7 Ag 1110 1001 0.00      
8 Ag 888 800 0.00      
9 Ag 449 405 0.00      
10 Ag 413 373 0.00      
11 Au 3329 3001 142.19      
12 Au 3233 2915 91.98      
13 Au 1634 1473 0.55      
14 Au 1517 1367 30.79      
15 Au 1372 1237 69.26      
16 Au 1253 1129 158.20      
17 Au 1202 1083 22.54      
18 Au 974 878 33.78      
19 Au 249 225 2.79      
20 Bg 3334 3006 0.00      
21 Bg 3235 2916 0.00      
22 Bg 1630 1470 0.00      
23 Bg 1490 1343 0.00      
24 Bg 1324 1194 0.00      
25 Bg 1231 1110 0.00      
26 Bg 937 845 0.00      
27 Bg 521 469 0.00      
28 Bu 3340 3011 136.70      
29 Bu 3241 2921 225.84      
30 Bu 1641 1479 14.12      
31 Bu 1540 1388 4.24      
32 Bu 1407 1268 11.91      
33 Bu 1135 1023 16.36      
34 Bu 923 832 76.98      
35 Bu 656 592 31.35      
36 Bu 270 243 43.64      

Unscaled Zero Point Vibrational Energy (zpe) 28960.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 26105.3 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/CEP-31G
ABC
0.16121 0.15677 0.08896

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.768 1.209
C2 0.000 0.768 -1.209
C3 0.000 -0.768 1.209
C4 0.000 -0.768 -1.209
O5 -0.629 -1.253 0.000
O6 0.629 1.253 0.000
H7 -1.021 1.147 1.263
H8 -1.021 1.147 -1.263
H9 1.021 -1.147 -1.263
H10 1.021 -1.147 1.263
H11 0.576 1.168 -2.036
H12 0.576 1.168 2.036
H13 -0.576 -1.168 -2.036
H14 -0.576 -1.168 2.036

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.41751.53642.86442.43741.44621.09032.70123.28942.17093.31921.08403.82192.1828
C22.41752.86441.53642.43741.44622.70121.09032.17093.28941.08403.31922.18283.8219
C31.53642.86442.41751.44622.43742.17093.28942.70121.09033.82192.18283.31921.0840
C42.86441.53642.41751.44622.43743.28942.17091.09032.70122.18283.82191.08403.3192
O52.43742.43741.44621.44622.80362.74002.74002.08072.08073.38463.38462.03812.0381
O61.44621.44622.43742.43742.80362.08072.08072.74002.74002.03812.03813.38463.3846
H71.09032.70122.17093.28942.74002.08072.52653.97663.07093.66501.77374.05472.4808
H82.70121.09033.28942.17092.74002.08072.52653.07093.97661.77373.66502.48084.0547
H93.28942.17092.70121.09032.08072.74003.97663.07092.52652.48084.05471.77373.6650
H102.17093.28941.09032.70122.08072.74003.07093.97662.52654.05472.48083.66501.7737
H113.31921.08403.82192.18283.38462.03813.66501.77372.48084.05474.07132.60454.8331
H121.08403.31922.18283.82193.38462.03811.77373.66504.05472.48084.07134.83312.6045
H133.82192.18283.31921.08402.03813.38464.05472.48081.77373.66502.60454.83314.0713
H142.18283.82191.08403.31922.03813.38462.48084.05473.66501.77374.83312.60454.0713

picture of 1,4-Dioxane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 O5 109.575 C1 C3 H10 110.327
C1 C3 H14 111.651 C1 O6 C2 113.395
C2 C4 O5 109.575 C2 C4 H9 110.327
C2 C4 H13 111.651 C3 C1 O6 109.575
C3 C1 H7 110.327 C3 C1 H12 111.651
C3 O5 C4 113.395 C4 C2 O6 109.575
C4 C2 H8 110.327 C4 C2 H11 111.651
O5 C3 H10 109.434 O5 C3 H14 106.438
O5 C4 H9 109.434 O5 C4 H13 106.438
O6 C1 H7 109.434 O6 C1 H12 106.438
O6 C2 H8 109.434 O6 C2 H11 106.438
H7 C1 H12 109.324 H8 C2 H11 109.324
H9 C4 H13 109.324 H10 C3 H14 109.324
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.053      
2 C -0.053      
3 C -0.053      
4 C -0.053      
5 O -0.439      
6 O -0.439      
7 H 0.106      
8 H 0.106      
9 H 0.106      
10 H 0.106      
11 H 0.165      
12 H 0.165      
13 H 0.165      
14 H 0.165      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.489 -0.007 0.000
y -0.007 5.815 0.000
z 0.000 0.000 7.391


<r2> (average value of r2) Å2
<r2> 118.729
(<r2>)1/2 10.896