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

using model chemistry: HSEh1PBE/3-21G

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/3-21G
 hartrees
Energy at 0K-305.650481
Energy at 298.15K-305.661602
HF Energy-305.650481
Nuclear repulsion energy261.285638
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/3-21G
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 3146 3031 0.00      
2 Ag 3036 2925 0.00      
3 Ag 1537 1480 0.00      
4 Ag 1436 1384 0.00      
5 Ag 1332 1283 0.00      
6 Ag 1144 1102 0.00      
7 Ag 1020 983 0.00      
8 Ag 848 817 0.00      
9 Ag 431 415 0.00      
10 Ag 400 385 0.00      
11 Au 3143 3027 57.76      
12 Au 3031 2920 34.09      
13 Au 1520 1464 1.18      
14 Au 1400 1348 24.31      
15 Au 1296 1248 22.19      
16 Au 1126 1085 115.53      
17 Au 1100 1060 4.58      
18 Au 897 864 16.60      
19 Au 232 224 2.20      
20 Bg 3143 3028 0.00      
21 Bg 3042 2930 0.00      
22 Bg 1522 1466 0.00      
23 Bg 1380 1329 0.00      
24 Bg 1248 1202 0.00      
25 Bg 1109 1069 0.00      
26 Bg 878 846 0.00      
27 Bg 468 450 0.00      
28 Bu 3146 3030 45.32      
29 Bu 3046 2934 121.82      
30 Bu 1531 1475 20.18      
31 Bu 1441 1388 0.78      
32 Bu 1323 1275 3.81      
33 Bu 1081 1041 9.77      
34 Bu 857 825 39.48      
35 Bu 588 567 16.77      
36 Bu 269 259 25.33      

Unscaled Zero Point Vibrational Energy (zpe) 27072.4 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 26078.8 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/3-21G
ABC
0.16457 0.15391 0.08990

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.767 1.187
C2 0.000 -0.767 -1.187
C3 0.000 0.767 1.187
C4 0.000 0.767 -1.187
O5 0.675 1.263 0.000
O6 -0.675 -1.263 0.000
H7 1.047 -1.101 1.206
H8 1.047 -1.101 -1.206
H9 -1.047 1.101 -1.206
H10 -1.047 1.101 1.206
H11 -0.521 -1.155 -2.069
H12 -0.521 -1.155 2.069
H13 0.521 1.155 -2.069
H14 0.521 1.155 2.069

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.37381.53412.82632.44611.45241.09942.63363.21172.14183.31981.09533.81652.1782
C22.37382.82631.53412.44611.45242.63361.09942.14183.21171.09533.31982.17823.8165
C31.53412.82632.37381.45242.44612.14183.21172.63361.09943.81652.17823.31981.0953
C42.82631.53412.37381.45242.44613.21172.14181.09942.63362.17823.81651.09533.3198
O52.44612.44611.45241.45242.86322.67992.67992.10862.10863.39943.39942.07722.0772
O61.45241.45242.44612.44612.86322.10862.10862.67992.67992.07722.07723.39943.3994
H71.09942.63362.14183.21172.67992.10862.41283.88053.03923.63151.79034.01192.4724
H82.63361.09943.21172.14182.67992.10862.41283.03923.88051.79033.63152.47244.0119
H93.21172.14182.63361.09942.10862.67993.88053.03922.41282.47244.01191.79033.6315
H102.14183.21171.09942.63362.10862.67993.03923.88052.41284.01192.47243.63151.7903
H113.31981.09533.81652.17823.39942.07723.63151.79032.47244.01194.13742.53464.8521
H121.09533.31982.17823.81653.39942.07721.79033.63154.01192.47244.13744.85212.5346
H133.81652.17823.31981.09532.07723.39944.01192.47241.79033.63152.53464.85214.1374
H142.17823.81651.09533.31982.07723.39942.47244.01193.63151.79034.85212.53464.1374

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 109.953 C1 C3 H10 107.694
C1 C3 H14 110.765 C1 O6 C2 109.609
C2 C4 O5 109.953 C2 C4 H9 107.694
C2 C4 H13 110.765 C3 C1 O6 109.953
C3 C1 H7 107.694 C3 C1 H12 110.765
C3 O5 C4 109.609 C4 C2 O6 109.953
C4 C2 H8 107.694 C4 C2 H11 110.765
O5 C3 H10 110.686 O5 C3 H14 108.427
O5 C4 H9 110.686 O5 C4 H13 108.427
O6 C1 H7 110.686 O6 C1 H12 108.427
O6 C2 H8 110.686 O6 C2 H11 108.427
H7 C1 H12 109.320 H8 C2 H11 109.320
H9 C4 H13 109.320 H10 C3 H14 109.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.205      
3 C -0.205      
4 C -0.205      
5 O -0.477      
6 O -0.477      
7 H 0.215      
8 H 0.215      
9 H 0.215      
10 H 0.215      
11 H 0.229      
12 H 0.229      
13 H 0.229      
14 H 0.229      


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 -38.469 -3.736 0.000
y -3.736 -41.132 0.000
z 0.000 0.000 -29.589
Traceless
 xyz
x -3.108 -3.736 0.000
y -3.736 -7.103 0.000
z 0.000 0.000 10.211
Polar
3z2-r220.423
x2-y22.663
xy-3.736
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.849 -0.080 0.000
y -0.080 5.962 0.000
z 0.000 0.000 7.988


<r2> (average value of r2) Å2
<r2> 141.669
(<r2>)1/2 11.902