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

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-305.741666
Energy at 298.15K-305.753073
Nuclear repulsion energy262.376858
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/SDD
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 3332 3000 0.00      
2 Ag 3233 2911 0.00      
3 Ag 1655 1490 0.00      
4 Ag 1547 1393 0.00      
5 Ag 1427 1285 0.00      
6 Ag 1262 1137 0.00      
7 Ag 1111 1001 0.00      
8 Ag 887 799 0.00      
9 Ag 453 408 0.00      
10 Ag 410 370 0.00      
11 Au 3326 2995 118.73      
12 Au 3225 2904 73.48      
13 Au 1642 1479 0.94      
14 Au 1519 1368 24.60      
15 Au 1384 1246 65.70      
16 Au 1255 1130 163.15      
17 Au 1207 1087 24.66      
18 Au 972 876 34.30      
19 Au 247 223 2.68      
20 Bg 3329 2998 0.00      
21 Bg 3228 2907 0.00      
22 Bg 1640 1477 0.00      
23 Bg 1499 1349 0.00      
24 Bg 1334 1201 0.00      
25 Bg 1234 1111 0.00      
26 Bg 939 846 0.00      
27 Bg 523 471 0.00      
28 Bu 3332 3001 87.19      
29 Bu 3235 2912 196.21      
30 Bu 1650 1486 15.48      
31 Bu 1547 1393 2.32      
32 Bu 1414 1273 11.09      
33 Bu 1140 1027 16.57      
34 Bu 918 826 76.41      
35 Bu 661 595 32.91      
36 Bu 268 242 43.44      

Unscaled Zero Point Vibrational Energy (zpe) 28994.1 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 26106.3 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/SDD
ABC
0.16192 0.15866 0.08961

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.763 1.207
C2 0.000 0.763 -1.207
C3 0.000 -0.763 1.207
C4 0.000 -0.763 -1.207
O5 -0.622 -1.247 0.000
O6 0.622 1.247 0.000
H7 -1.016 1.139 1.265
H8 -1.016 1.139 -1.265
H9 1.016 -1.139 -1.265
H10 1.016 -1.139 1.265
H11 0.574 1.162 -2.029
H12 0.574 1.162 2.029
H13 -0.574 -1.162 -2.029
H14 -0.574 -1.162 2.029

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.41441.52672.85652.42601.44151.08502.69953.28112.15763.31051.07863.80872.1702
C22.41442.85651.52672.42601.44152.69951.08502.15763.28111.07863.31052.17023.8087
C31.52672.85652.41441.44152.42602.15763.28112.69951.08503.80872.17023.31051.0786
C42.85651.52672.41441.44152.42603.28112.15761.08502.69952.17023.80871.07863.3105
O52.42602.42601.44151.44152.78692.72952.72952.07272.07273.36863.36862.03112.0311
O61.44151.44152.42602.42602.78692.07272.07272.72952.72952.03112.03113.36863.3686
H71.08502.69952.15763.28112.72952.07272.53093.96553.05293.65801.76424.04232.4639
H82.69951.08503.28112.15762.72952.07272.53093.05293.96551.76423.65802.46394.0423
H93.28112.15762.69951.08502.07272.72953.96553.05292.53092.46394.04231.76423.6580
H102.15763.28111.08502.69952.07272.72953.05293.96552.53094.04232.46393.65801.7642
H113.31051.07863.80872.17023.36862.03113.65801.76422.46394.04234.05752.59154.8145
H121.07863.31052.17023.80873.36862.03111.76423.65804.04232.46394.05754.81452.5915
H133.80872.17023.31051.07862.03113.36864.04232.46391.76423.65802.59154.81454.0575
H142.17023.80871.07863.31052.03113.36862.46394.04233.65801.76424.81452.59154.0575

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 109.606 C1 C3 H10 110.263
C1 C3 H14 111.669 C1 O6 C2 113.743
C2 C4 O5 109.606 C2 C4 H9 110.263
C2 C4 H13 111.669 C3 C1 O6 109.606
C3 C1 H7 110.263 C3 C1 H12 111.669
C3 O5 C4 113.743 C4 C2 O6 109.606
C4 C2 H8 110.263 C4 C2 H11 111.669
O5 C3 H10 109.437 O5 C3 H14 106.519
O5 C4 H9 109.437 O5 C4 H13 106.519
O6 C1 H7 109.437 O6 C1 H12 106.519
O6 C2 H8 109.437 O6 C2 H11 106.519
H7 C1 H12 109.260 H8 C2 H11 109.260
H9 C4 H13 109.260 H10 C3 H14 109.260
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.101      
2 C -0.101      
3 C -0.101      
4 C -0.101      
5 O -0.513      
6 O -0.513      
7 H 0.171      
8 H 0.171      
9 H 0.171      
10 H 0.171      
11 H 0.187      
12 H 0.187      
13 H 0.187      
14 H 0.187      


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 5.575 0.005 0.000
y 0.005 5.707 0.000
z 0.000 0.000 7.442


<r2> (average value of r2) Å2
<r2> 142.100
(<r2>)1/2 11.921