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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-307.627324
Energy at 298.15K-307.638560
Nuclear repulsion energy264.738272
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 mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3130 3000 0.00      
2 Ag 3013 2887 0.00      
3 Ag 1480 1418 0.00      
4 Ag 1417 1358 0.00      
5 Ag 1326 1271 0.00      
6 Ag 1143 1095 0.00      
7 Ag 1048 1004 0.00      
8 Ag 864 828 0.00      
9 Ag 438 420 0.00      
10 Ag 413 395 0.00      
11 Au 3129 2999 84.74      
12 Au 3006 2881 58.33      
13 Au 1466 1405 3.00      
14 Au 1383 1325 16.96      
15 Au 1279 1226 53.41      
16 Au 1179 1130 164.65      
17 Au 1102 1056 5.43      
18 Au 910 872 18.05      
19 Au 253 242 0.80      
20 Bg 3130 2999 0.00      
21 Bg 3016 2890 0.00      
22 Bg 1463 1402 0.00      
23 Bg 1341 1285 0.00      
24 Bg 1232 1181 0.00      
25 Bg 1165 1116 0.00      
26 Bg 863 827 0.00      
27 Bg 490 469 0.00      
28 Bu 3131 3000 43.49      
29 Bu 3020 2894 157.83      
30 Bu 1471 1410 15.51      
31 Bu 1391 1333 2.28      
32 Bu 1312 1258 11.54      
33 Bu 1066 1022 10.13      
34 Bu 910 872 70.10      
35 Bu 608 583 13.63      
36 Bu 266 255 17.98      

Unscaled Zero Point Vibrational Energy (zpe) 26925.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 25803.0 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 mPW1PW91/aug-cc-pVDZ
ABC
0.17017 0.15722 0.09185

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.758 1.166
C2 0.000 0.758 -1.166
C3 0.000 -0.758 1.166
C4 0.000 -0.758 -1.166
O5 -0.633 -1.259 0.000
O6 0.633 1.259 0.000
H7 -1.039 1.130 1.217
H8 -1.039 1.130 -1.217
H9 1.039 -1.130 -1.217
H10 1.039 -1.130 1.217
H11 0.560 1.150 -2.023
H12 0.560 1.150 2.023
H13 -0.560 -1.150 -2.023
H14 -0.560 -1.150 2.023

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.33121.51622.78092.41441.41781.10442.62573.21272.15573.26141.09663.75802.1653
C22.33122.78091.51622.41441.41782.62571.10442.15573.21271.09663.26142.16533.7580
C31.51622.78092.33121.41782.41442.15573.21272.62571.10443.75802.16533.26141.0966
C42.78091.51622.33121.41782.41443.21272.15571.10442.62572.16533.75801.09663.2614
O52.41442.41441.41781.41782.81882.71222.71222.07162.07163.36453.36452.02782.0278
O61.41781.41782.41442.41442.81882.07162.07162.71222.71222.02782.02783.36453.3645
H71.10442.62572.15573.21272.71222.07162.43443.91783.06973.61331.79013.99112.4651
H82.62571.10443.21272.15572.71222.07162.43443.06973.91781.79013.61332.46513.9911
H93.21272.15572.62571.10442.07162.71223.91783.06972.43442.46513.99111.79013.6133
H102.15573.21271.10442.62572.07162.71223.06973.91782.43443.99112.46513.61331.7901
H113.26141.09663.75802.16533.36452.02783.61331.79012.46513.99114.04692.55724.7871
H121.09663.26142.16533.75803.36452.02781.79013.61333.99112.46514.04694.78712.5572
H133.75802.16533.26141.09662.02783.36453.99112.46511.79013.61332.55724.78714.0469
H142.16533.75801.09663.26142.02783.36452.46513.99113.61331.79014.78712.55724.0469

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 110.705 C1 C3 H10 109.689
C1 C3 H14 110.917 C1 O6 C2 110.588
C2 C4 O5 110.705 C2 C4 H9 109.689
C2 C4 H13 110.917 C3 C1 O6 110.705
C3 C1 H7 109.689 C3 C1 H12 110.917
C3 O5 C4 110.588 C4 C2 O6 110.705
C4 C2 H8 109.689 C4 C2 H11 110.917
O5 C3 H10 109.815 O5 C3 H14 106.807
O5 C4 H9 109.815 O5 C4 H13 106.807
O6 C1 H7 109.815 O6 C1 H12 106.807
O6 C2 H8 109.815 O6 C2 H11 106.807
H7 C1 H12 108.850 H8 C2 H11 108.850
H9 C4 H13 108.850 H10 C3 H14 108.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.810      
2 C 0.810      
3 C 0.810      
4 C 0.810      
5 O -0.600      
6 O -0.600      
7 H -0.192      
8 H -0.192      
9 H -0.192      
10 H -0.192      
11 H -0.318      
12 H -0.318      
13 H -0.318      
14 H -0.318      


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 -38.580 -3.224 0.000
y -3.224 -40.948 0.000
z 0.000 0.000 -30.996
Traceless
 xyz
x -2.608 -3.224 0.000
y -3.224 -6.160 0.000
z 0.000 0.000 8.768
Polar
3z2-r217.535
x2-y22.368
xy-3.224
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.669 -0.078 0.000
y -0.078 8.088 0.000
z 0.000 0.000 9.509


<r2> (average value of r2) Å2
<r2> 139.459
(<r2>)1/2 11.809