return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/6-311G**

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/6-311G**
 hartrees
Energy at 0K-305.903694
Energy at 298.15K-305.915256
Nuclear repulsion energy266.816026
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/6-311G**
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 3247 2950 0.00      
2 Ag 3146 2858 0.00      
3 Ag 1635 1485 0.00      
4 Ag 1573 1429 0.00      
5 Ag 1447 1314 0.00      
6 Ag 1258 1142 0.00      
7 Ag 1116 1014 0.00      
8 Ag 919 835 0.00      
9 Ag 467 424 0.00      
10 Ag 442 402 0.00      
11 Au 3243 2946 140.40      
12 Au 3136 2849 43.46      
13 Au 1618 1470 0.06      
14 Au 1531 1391 40.13      
15 Au 1397 1270 83.27      
16 Au 1287 1169 213.92      
17 Au 1209 1098 5.53      
18 Au 967 878 27.02      
19 Au 261 237 1.16      
20 Bg 3243 2946 0.00      
21 Bg 3144 2857 0.00      
22 Bg 1612 1465 0.00      
23 Bg 1482 1346 0.00      
24 Bg 1350 1227 0.00      
25 Bg 1277 1161 0.00      
26 Bg 939 853 0.00      
27 Bg 528 479 0.00      
28 Bu 3245 2948 85.49      
29 Bu 3154 2865 206.95      
30 Bu 1629 1480 9.20      
31 Bu 1542 1401 8.82      
32 Bu 1438 1306 18.07      
33 Bu 1154 1048 14.79      
34 Bu 988 897 90.75      
35 Bu 667 606 18.33      
36 Bu 285 259 25.69      

Unscaled Zero Point Vibrational Energy (zpe) 28787.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 26153.0 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 HF/6-311G**
ABC
0.17172 0.16043 0.09301

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.759 1.163
C2 0.000 0.759 -1.163
C3 0.000 -0.759 1.163
C4 0.000 -0.759 -1.163
O5 -0.613 -1.244 0.000
O6 0.613 1.244 0.000
H7 -1.025 1.126 1.224
H8 -1.025 1.126 -1.224
H9 1.025 -1.126 -1.224
H10 1.025 -1.126 1.224
H11 0.558 1.147 -2.006
H12 0.558 1.147 2.006
H13 -0.558 -1.147 -2.006
H14 -0.558 -1.147 2.006

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.32581.51752.77712.39581.40131.09022.62353.20942.14623.24081.08283.73952.1572
C22.32582.77711.51752.39581.40132.62351.09022.14623.20941.08283.24082.15723.7395
C31.51752.77712.32581.40132.39582.14623.20942.62351.09023.73952.15723.24081.0828
C42.77711.51752.32581.40132.39583.20942.14621.09022.62352.15723.73951.08283.2408
O52.39582.39581.40131.40132.77392.69932.69932.04782.04783.33343.33342.00902.0090
O61.40131.40132.39582.39582.77392.04782.04782.69932.69932.00902.00903.33343.3334
H71.09022.62352.14623.20942.69932.04782.44833.90713.04493.59691.76523.97712.4485
H82.62351.09023.20942.14622.69932.04782.44833.04493.90711.76523.59692.44853.9771
H93.20942.14622.62351.09022.04782.69933.90713.04492.44832.44853.97711.76523.5969
H102.14623.20941.09022.62352.04782.69933.04493.90712.44833.97712.44853.59691.7652
H113.24081.08283.73952.15723.33342.00903.59691.76522.44853.97714.01172.55084.7540
H121.08283.24082.15723.73953.33342.00901.76523.59693.97712.44854.01174.75402.5508
H133.73952.15723.24081.08282.00903.33343.97712.44851.76523.59692.55084.75404.0117
H142.15723.73951.08283.24082.00903.33342.44853.97713.59691.76524.75402.55084.0117

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 110.271 C1 C3 H10 109.689
C1 C3 H14 111.006 C1 O6 C2 112.175
C2 C4 O5 110.271 C2 C4 H9 109.689
C2 C4 H13 111.006 C3 C1 O6 110.271
C3 C1 H7 109.689 C3 C1 H12 111.006
C3 O5 C4 112.175 C4 C2 O6 110.271
C4 C2 H8 109.689 C4 C2 H11 111.006
O5 C3 H10 109.931 O5 C3 H14 107.250
O5 C4 H9 109.931 O5 C4 H13 107.250
O6 C1 H7 109.931 O6 C1 H12 107.250
O6 C2 H8 109.931 O6 C2 H11 107.250
H7 C1 H12 108.649 H8 C2 H11 108.649
H9 C4 H13 108.649 H10 C3 H14 108.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.068      
2 C 0.068      
3 C 0.068      
4 C 0.068      
5 O -0.480      
6 O -0.480      
7 H 0.081      
8 H 0.081      
9 H 0.081      
10 H 0.081      
11 H 0.091      
12 H 0.091      
13 H 0.091      
14 H 0.091      


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 -38.300 -3.519 0.000
y -3.519 -41.338 0.000
z 0.000 0.000 -30.381
Traceless
 xyz
x -2.441 -3.519 0.000
y -3.519 -6.997 0.000
z 0.000 0.000 9.438
Polar
3z2-r218.876
x2-y23.037
xy-3.519
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.223 -0.181 0.000
y -0.181 6.375 0.000
z 0.000 0.000 7.892


<r2> (average value of r2) Å2
<r2> 137.825
(<r2>)1/2 11.740