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: MP3=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-306.752303
Energy at 298.15K-306.763654
HF Energy-305.823184
Nuclear repulsion energy264.651923
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 MP3=FULL/6-31G*
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 3167 2972 0.00      
2 Ag 3065 2876 0.00      
3 Ag 1563 1467 0.00      
4 Ag 1481 1390 0.00      
5 Ag 1372 1287 0.00      
6 Ag 1193 1120 0.00      
7 Ag 1074 1008 0.00      
8 Ag 886 831 0.00      
9 Ag 453 425 0.00      
10 Ag 436 409 0.00      
11 Au 3165 2970 74.73      
12 Au 3060 2871 35.63      
13 Au 1548 1452 0.19      
14 Au 1445 1355 32.61      
15 Au 1322 1240 46.40      
16 Au 1219 1144 148.10      
17 Au 1149 1079 4.65      
18 Au 935 877 21.74      
19 Au 262 246 1.53      
20 Bg 3166 2971 0.00      
21 Bg 3068 2878 0.00      
22 Bg 1545 1450 0.00      
23 Bg 1402 1316 0.00      
24 Bg 1274 1196 0.00      
25 Bg 1208 1133 0.00      
26 Bg 899 844 0.00      
27 Bg 495 465 0.00      
28 Bu 3168 2972 52.34      
29 Bu 3071 2882 126.65      
30 Bu 1559 1462 10.14      
31 Bu 1459 1369 3.96      
32 Bu 1359 1275 9.95      
33 Bu 1101 1033 11.63      
34 Bu 935 878 66.17      
35 Bu 630 592 15.23      
36 Bu 286 268 23.40      

Unscaled Zero Point Vibrational Energy (zpe) 27710.2 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 26000.5 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 MP3=FULL/6-31G*
ABC
0.16987 0.15723 0.09201

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.761 1.167
C2 0.000 0.761 -1.167
C3 0.000 -0.761 1.167
C4 0.000 -0.761 -1.167
O5 -0.637 -1.252 0.000
O6 0.637 1.252 0.000
H7 -1.038 1.125 1.223
H8 -1.038 1.125 -1.223
H9 1.038 -1.125 -1.223
H10 1.038 -1.125 1.223
H11 0.558 1.156 -2.021
H12 0.558 1.156 2.021
H13 -0.558 -1.156 -2.021
H14 -0.558 -1.156 2.021

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.33401.52142.78612.41251.41741.10172.63103.21642.15333.26051.09413.76162.1715
C22.33402.78611.52142.41251.41742.63101.10172.15333.21641.09413.26052.17153.7616
C31.52142.78612.33401.41742.41252.15333.21642.63101.10173.76162.17153.26051.0941
C42.78611.52142.33401.41742.41253.21642.15331.10172.63102.17153.76161.09413.2605
O52.41252.41251.41741.41742.80992.70352.70352.07772.07773.36353.36352.02482.0248
O61.41741.41742.41252.41252.80992.07772.07772.70352.70352.02482.02483.36353.3635
H71.10172.63102.15333.21642.70352.07772.44573.91863.06163.61541.78473.99472.4641
H82.63101.10173.21642.15332.70352.07772.44573.06163.91861.78473.61542.46413.9947
H93.21642.15332.63101.10172.07772.70353.91863.06162.44572.46413.99471.78473.6154
H102.15333.21641.10172.63102.07772.70353.06163.91862.44573.99472.46413.61541.7847
H113.26051.09413.76162.17153.36352.02483.61541.78472.46413.99474.04202.56764.7886
H121.09413.26052.17153.76163.36352.02481.78473.61543.99472.46414.04204.78862.5676
H133.76162.17153.26051.09412.02483.36353.99472.46411.78473.61542.56764.78864.0420
H142.17153.76161.09413.26052.02483.36352.46413.99473.61541.78474.78862.56764.0420

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 110.299 C1 C3 H10 109.310
C1 C3 H14 111.197 C1 O6 C2 110.840
C2 C4 O5 110.299 C2 C4 H9 109.310
C2 C4 H13 111.197 C3 C1 O6 110.299
C3 C1 H7 109.310 C3 C1 H12 111.197
C3 O5 C4 110.840 C4 C2 O6 110.299
C4 C2 H8 109.310 C4 C2 H11 111.197
O5 C3 H10 110.508 O5 C3 H14 106.751
O5 C4 H9 110.508 O5 C4 H13 106.751
O6 C1 H7 110.508 O6 C1 H12 106.751
O6 C2 H8 110.508 O6 C2 H11 106.751
H7 C1 H12 108.744 H8 C2 H11 108.744
H9 C4 H13 108.744 H10 C3 H14 108.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability