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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-307.357037
Energy at 298.15K-307.368276
HF Energy-307.357037
Nuclear repulsion energy264.930263
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 HSEh1PBE/6-31+G**
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 3131 2990 0.00      
2 Ag 3011 2875 0.00      
3 Ag 1494 1427 0.00      
4 Ag 1429 1364 0.00      
5 Ag 1335 1274 0.00      
6 Ag 1150 1098 0.00      
7 Ag 1046 999 0.00      
8 Ag 866 827 0.00      
9 Ag 439 419 0.00      
10 Ag 420 401 0.00      
11 Au 3130 2989 83.42      
12 Au 3005 2869 56.27      
13 Au 1482 1415 2.11      
14 Au 1396 1333 19.75      
15 Au 1288 1230 57.88      
16 Au 1184 1130 172.02      
17 Au 1111 1061 4.01      
18 Au 910 869 18.06      
19 Au 255 244 1.06      
20 Bg 3131 2989 0.00      
21 Bg 3016 2880 0.00      
22 Bg 1479 1412 0.00      
23 Bg 1357 1296 0.00      
24 Bg 1242 1186 0.00      
25 Bg 1175 1121 0.00      
26 Bg 869 830 0.00      
27 Bg 491 469 0.00      
28 Bu 3131 2990 41.36      
29 Bu 3020 2883 162.40      
30 Bu 1488 1421 16.94      
31 Bu 1407 1343 4.56      
32 Bu 1322 1262 11.77      
33 Bu 1072 1024 10.36      
34 Bu 914 873 75.61      
35 Bu 611 583 13.89      
36 Bu 272 259 21.29      

Unscaled Zero Point Vibrational Energy (zpe) 27039.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 25816.9 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 HSEh1PBE/6-31+G**
ABC
0.17039 0.15741 0.09197

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.764 1.158
C2 0.000 0.764 -1.158
C3 0.000 -0.764 1.158
C4 0.000 -0.764 -1.158
O5 -0.659 -1.254 0.000
O6 0.659 1.254 0.000
H7 -1.035 1.123 1.180
H8 -1.035 1.123 -1.180
H9 1.035 -1.123 -1.180
H10 1.035 -1.123 1.180
H11 0.527 1.149 -2.036
H12 0.527 1.149 2.036
H13 -0.527 -1.149 -2.036
H14 -0.527 -1.149 2.036

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.31521.52722.77352.41801.41951.09602.58153.17702.15193.25981.09473.75992.1700
C22.31522.77351.52722.41801.41952.58151.09602.15193.17701.09473.25982.17003.7599
C31.52722.77352.31521.41952.41802.15193.17702.58151.09603.75992.17003.25981.0947
C42.77351.52722.31521.41952.41803.17702.15191.09602.58152.17003.75991.09473.2598
O52.41802.41801.41951.41952.83392.68042.68042.06862.06863.36613.36612.04312.0431
O61.41951.41952.41802.41802.83392.06862.06862.68042.68042.04312.04313.36613.3661
H71.09602.58152.15193.17702.68042.06862.35953.85973.05453.57531.78173.97032.4809
H82.58151.09603.17702.15192.68042.06862.35953.05453.85971.78173.57532.48093.9703
H93.17702.15192.58151.09602.06862.68043.85973.05452.35952.48093.97031.78173.5753
H102.15193.17701.09602.58152.06862.68043.05453.85972.35953.97032.48093.57531.7817
H113.25981.09473.75992.17003.36612.04313.57531.78172.48093.97034.07232.52884.7936
H121.09473.25982.17003.75993.36612.04311.78173.57533.97032.48094.07234.79362.5288
H133.75992.17003.25981.09472.04313.36613.97032.48091.78173.57532.52884.79364.0723
H142.17003.75991.09473.25982.04313.36612.48093.97033.57531.78174.79362.52884.0723

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 110.229 C1 C3 H10 109.132
C1 C3 H14 110.636 C1 O6 C2 109.268
C2 C4 O5 110.229 C2 C4 H9 109.132
C2 C4 H13 110.636 C3 C1 O6 110.229
C3 C1 H7 109.132 C3 C1 H12 110.636
C3 O5 C4 109.268 C4 C2 O6 110.229
C4 C2 H8 109.132 C4 C2 H11 110.636
O5 C3 H10 109.973 O5 C3 H14 108.010
O5 C4 H9 109.973 O5 C4 H13 108.010
O6 C1 H7 109.973 O6 C1 H12 108.010
O6 C2 H8 109.973 O6 C2 H11 108.010
H7 C1 H12 108.840 H8 C2 H11 108.840
H9 C4 H13 108.840 H10 C3 H14 108.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.150      
2 C -0.150      
3 C -0.150      
4 C -0.150      
5 O -0.331      
6 O -0.331      
7 H 0.153      
8 H 0.153      
9 H 0.153      
10 H 0.153      
11 H 0.162      
12 H 0.162      
13 H 0.162      
14 H 0.162      


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
Primitive
 xyz
x -38.952 -3.552 0.000
y -3.552 -41.424 0.000
z 0.000 0.000 -30.596
Traceless
 xyz
x -2.942 -3.552 0.000
y -3.552 -6.650 0.000
z 0.000 0.000 9.592
Polar
3z2-r219.183
x2-y22.472
xy-3.552
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.291 -0.125 0.000
y -0.125 7.536 0.000
z 0.000 0.000 8.941


<r2> (average value of r2) Å2
<r2> 139.386
(<r2>)1/2 11.806