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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-58.800902
Energy at 298.15K-58.812133
HF Energy-57.973498
Nuclear repulsion energy146.393420
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 MP2/CEP-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 3164 3004 0.00      
2 Ag 3065 2910 0.00      
3 Ag 1527 1450 0.00      
4 Ag 1455 1381 0.00      
5 Ag 1344 1276 0.00      
6 Ag 1165 1106 0.00      
7 Ag 1050 997 0.00      
8 Ag 850 807 0.00      
9 Ag 442 420 0.00      
10 Ag 426 404 0.00      
11 Au 3160 3000 72.05      
12 Au 3064 2909 90.29      
13 Au 1515 1438 0.80      
14 Au 1422 1350 29.73      
15 Au 1289 1224 41.82      
16 Au 1177 1117 150.52      
17 Au 1124 1067 11.26      
18 Au 909 863 20.26      
19 Au 258 245 1.70      
20 Bg 3168 3007 0.00      
21 Bg 3067 2912 0.00      
22 Bg 1507 1431 0.00      
23 Bg 1369 1300 0.00      
24 Bg 1248 1185 0.00      
25 Bg 1155 1097 0.00      
26 Bg 879 834 0.00      
27 Bg 482 458 0.00      
28 Bu 3170 3010 84.08      
29 Bu 3067 2912 149.45      
30 Bu 1517 1440 13.27      
31 Bu 1424 1352 7.06      
32 Bu 1326 1259 7.12      
33 Bu 1070 1016 9.17      
34 Bu 902 856 70.30      
35 Bu 610 579 15.04      
36 Bu 285 271 24.66      

Unscaled Zero Point Vibrational Energy (zpe) 27325.9 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 25943.2 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 MP2/CEP-31G*
ABC
0.16787 0.15189 0.08995

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.769 1.171
C2 0.000 0.769 -1.171
C3 0.000 -0.769 1.171
C4 0.000 -0.769 -1.171
O5 -0.669 -1.275 0.000
O6 0.669 1.275 0.000
H7 -1.044 1.143 1.200
H8 -1.044 1.143 -1.200
H9 1.044 -1.143 -1.200
H10 1.044 -1.143 1.200
H11 0.558 1.162 -2.039
H12 0.558 1.162 2.039
H13 -0.558 -1.162 -2.039
H14 -0.558 -1.162 2.039

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.34271.53762.80222.44831.44041.10952.61793.21982.17833.28191.10373.78722.1887
C22.34272.80221.53762.44831.44042.61791.10952.17833.21981.10373.28192.18873.7872
C31.53762.80222.34271.44042.44832.17833.21982.61791.10953.78722.18873.28191.1037
C42.80221.53762.34271.44042.44833.21982.17831.10952.61792.18873.78721.10373.2819
O52.44832.44831.44041.44042.87852.72472.72472.09562.09563.40533.40532.04502.0450
O61.44041.44042.44832.44832.87852.09562.09562.72472.72472.04502.04503.40533.4053
H71.10952.61792.17833.21982.72472.09562.40013.91723.09593.61351.80854.00462.5000
H82.61791.10953.21982.17832.72472.09562.40013.09593.91721.80853.61352.50004.0046
H93.21982.17832.61791.10952.09562.72473.91723.09592.40012.50004.00461.80853.6135
H102.17833.21981.10952.61792.09562.72473.09593.91722.40014.00462.50003.61351.8085
H113.28191.10373.78722.18873.40532.04503.61351.80852.50004.00464.07772.57734.8239
H121.10373.28192.18873.78723.40532.04501.80853.61354.00462.50004.07774.82392.5773
H133.78722.18873.28191.10372.04503.40534.00462.50001.80853.61352.57734.82394.0777
H142.18873.78721.10373.28192.04503.40532.50004.00463.61351.80854.82392.57734.0777

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 110.555 C1 C3 H10 109.690
C1 C3 H14 110.853 C1 O6 C2 108.816
C2 C4 O5 110.555 C2 C4 H9 109.690
C2 C4 H13 110.853 C3 C1 O6 110.555
C3 C1 H7 109.690 C3 C1 H12 110.853
C3 O5 C4 108.816 C4 C2 O6 110.555
C4 C2 H8 109.690 C4 C2 H11 110.853
O5 C3 H10 109.853 O5 C3 H14 106.238
O5 C4 H9 109.853 O5 C4 H13 106.238
O6 C1 H7 109.853 O6 C1 H12 106.238
O6 C2 H8 109.853 O6 C2 H11 106.238
H7 C1 H12 109.595 H8 C2 H11 109.595
H9 C4 H13 109.595 H10 C3 H14 109.595
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability