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

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-307.560745
Energy at 298.15K-307.571743
Nuclear repulsion energy261.567381
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 BLYP/6-31G(2df,p)
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 3003 2986 0.00      
2 Ag 2886 2870 0.00      
3 Ag 1448 1440 0.00      
4 Ag 1374 1367 0.00      
5 Ag 1287 1280 0.00      
6 Ag 1110 1104 0.00      
7 Ag 973 968 0.00      
8 Ag 811 807 0.00      
9 Ag 427 425 0.00      
10 Ag 399 397 0.00      
11 Au 3001 2985 99.19      
12 Au 2877 2861 51.74      
13 Au 1435 1427 0.01      
14 Au 1347 1340 19.58      
15 Au 1239 1232 29.89      
16 Au 1078 1072 25.21      
17 Au 1069 1063 149.81      
18 Au 857 852 17.06      
19 Au 236 235 0.73      
20 Bg 3001 2985 0.00      
21 Bg 2889 2873 0.00      
22 Bg 1435 1427 0.00      
23 Bg 1322 1315 0.00      
24 Bg 1198 1191 0.00      
25 Bg 1067 1061 0.00      
26 Bg 833 829 0.00      
27 Bg 472 470 0.00      
28 Bu 3002 2985 56.10      
29 Bu 2895 2879 177.09      
30 Bu 1442 1434 9.33      
31 Bu 1372 1364 6.00      
32 Bu 1278 1271 8.94      
33 Bu 1032 1026 8.84      
34 Bu 844 839 54.75      
35 Bu 589 586 9.94      
36 Bu 257 256 13.62      

Unscaled Zero Point Vibrational Energy (zpe) 25891.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 25749.0 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 BLYP/6-31G(2df,p)
ABC
0.16618 0.15313 0.08954

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.769 1.180
C2 0.000 0.769 -1.180
C3 0.000 -0.769 1.180
C4 0.000 -0.769 -1.180
O5 -0.644 -1.276 0.000
O6 0.644 1.276 0.000
H7 -1.045 1.138 1.237
H8 -1.045 1.138 -1.237
H9 1.045 -1.138 -1.237
H10 1.045 -1.138 1.237
H11 0.565 1.165 -2.039
H12 0.565 1.165 2.039
H13 -0.565 -1.165 -2.039
H14 -0.565 -1.165 2.039

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.36101.53712.81732.44711.43721.11022.65933.25122.17513.29271.10163.79792.1900
C22.36102.81731.53712.44711.43722.65931.11022.17513.25121.10163.29272.19003.7979
C31.53712.81732.36101.43722.44712.17513.25122.65931.11023.79792.19003.29271.1016
C42.81731.53712.36101.43722.44713.25122.17511.11022.65932.19003.79791.10163.2927
O52.44712.44711.43721.43722.85852.74192.74192.09812.09813.40283.40282.04362.0436
O61.43721.43722.44712.44712.85852.09812.09812.74192.74192.04362.04363.40283.4028
H71.11022.65932.17513.25122.74192.09812.47333.95843.09063.65011.79924.03322.4861
H82.65931.11023.25122.17512.74192.09812.47333.09063.95841.79923.65012.48614.0332
H93.25122.17512.65931.11022.09812.74193.95843.09062.47332.48614.03321.79923.6501
H102.17513.25121.11022.65932.09812.74193.09063.95842.47334.03322.48613.65011.7992
H113.29271.10163.79792.19003.40282.04363.65011.79922.48614.03324.07802.59004.8310
H121.10163.29272.19003.79793.40282.04361.79923.65014.03322.48614.07804.83102.5900
H133.79792.19003.29271.10162.04363.40284.03322.48611.79923.65012.59004.83104.0780
H142.19003.79791.10163.29272.04363.40282.48614.03323.65011.79924.83102.59004.0780

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 110.676 C1 C3 H10 109.437
C1 C3 H14 111.116 C1 O6 C2 110.444
C2 C4 O5 110.676 C2 C4 H9 109.437
C2 C4 H13 111.116 C3 C1 O6 110.676
C3 C1 H7 109.437 C3 C1 H12 111.116
C3 O5 C4 110.444 C4 C2 O6 110.676
C4 C2 H8 109.437 C4 C2 H11 111.116
O5 C3 H10 110.236 O5 C3 H14 106.457
O5 C4 H9 110.236 O5 C4 H13 106.457
O6 C1 H7 110.236 O6 C1 H12 106.457
O6 C2 H8 110.236 O6 C2 H11 106.457
H7 C1 H12 108.871 H8 C2 H11 108.871
H9 C4 H13 108.871 H10 C3 H14 108.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.072      
2 C -0.072      
3 C -0.072      
4 C -0.072      
5 O -0.192      
6 O -0.192      
7 H 0.078      
8 H 0.078      
9 H 0.078      
10 H 0.078      
11 H 0.090      
12 H 0.090      
13 H 0.090      
14 H 0.090      


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 -37.937 -2.715 0.000
y -2.715 -40.284 0.000
z 0.000 0.000 -31.474
Traceless
 xyz
x -2.058 -2.715 0.000
y -2.715 -5.578 0.000
z 0.000 0.000 7.636
Polar
3z2-r215.272
x2-y22.347
xy-2.715
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.790 -0.118 0.000
y -0.118 7.197 0.000
z 0.000 0.000 9.035


<r2> (average value of r2) Å2
<r2> 142.151
(<r2>)1/2 11.923