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

using model chemistry: MP2/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 MP2/SDD
 hartrees
Energy at 0K-306.316833
Energy at 298.15K-306.327780
HF Energy-305.730863
Nuclear repulsion energy255.969804
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/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 3142 3033 0.00      
2 Ag 3033 2928 0.00      
3 Ag 1517 1465 0.00      
4 Ag 1409 1360 0.00      
5 Ag 1298 1253 0.00      
6 Ag 1152 1112 0.00      
7 Ag 1003 968 0.00      
8 Ag 776 749 0.00      
9 Ag 412 398 0.00      
10 Ag 390 377 0.00      
11 Au 3140 3031 72.81      
12 Au 3031 2926 69.56      
13 Au 1508 1456 1.45      
14 Au 1384 1336 13.03      
15 Au 1252 1209 26.39      
16 Au 1111 1072 25.54      
17 Au 1071 1034 81.52      
18 Au 872 842 30.93      
19 Au 233 225 2.89      
20 Bg 3145 3035 0.00      
21 Bg 3035 2929 0.00      
22 Bg 1506 1453 0.00      
23 Bg 1368 1320 0.00      
24 Bg 1200 1159 0.00      
25 Bg 1067 1030 0.00      
26 Bg 847 818 0.00      
27 Bg 461 445 0.00      
28 Bu 3146 3037 66.31      
29 Bu 3036 2930 146.41      
30 Bu 1512 1459 13.91      
31 Bu 1417 1368 1.46      
32 Bu 1278 1233 3.91      
33 Bu 1042 1006 10.91      
34 Bu 782 755 43.01      
35 Bu 588 567 24.87      
36 Bu 257 248 34.30      

Unscaled Zero Point Vibrational Energy (zpe) 26709.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 25782.5 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 MP2/SDD
ABC
0.15619 0.14891 0.08587

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.774 1.225
C2 0.000 0.774 -1.225
C3 0.000 -0.774 1.225
C4 0.000 -0.774 -1.225
O5 -0.693 -1.279 0.000
O6 0.693 1.279 0.000
H7 -1.040 1.155 1.239
H8 -1.040 1.155 -1.239
H9 1.040 -1.155 -1.239
H10 1.040 -1.155 1.239
H11 0.571 1.189 -2.070
H12 0.571 1.189 2.070
H13 -0.571 -1.189 -2.070
H14 -0.571 -1.189 2.070

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.45061.54832.89872.48921.49561.10752.70133.29772.19193.37031.10103.87802.2119
C22.45062.89871.54832.48921.49562.70131.10752.19193.29771.10103.37032.21193.8780
C31.54832.89872.45061.49562.48922.19193.29772.70131.10753.87802.21193.37031.1010
C42.89871.54832.45061.49562.48923.29772.19191.10752.70132.21193.87801.10103.3703
O52.48922.48921.49561.49562.90932.75302.75302.13382.13383.46023.46022.07582.0758
O61.49561.49562.48922.48922.90932.13382.13382.75302.75302.07582.07583.46023.4602
H71.10752.70132.19193.29772.75302.13382.47723.97503.10873.68041.81344.08192.5308
H82.70131.10753.29772.19192.75302.13382.47723.10873.97501.81343.68042.53084.0819
H93.29772.19192.70131.10752.13382.75303.97503.10872.47722.53084.08191.81343.6804
H102.19193.29771.10752.70132.13382.75303.10873.97502.47724.08192.53083.68041.8134
H113.37031.10103.87802.21193.46022.07583.68041.81342.53084.08194.14052.63754.9093
H121.10103.37032.21193.87803.46022.07581.81343.68044.08192.53084.14054.90932.6375
H133.87802.21193.37031.10102.07583.46024.08192.53081.81343.68042.63754.90934.1405
H142.21193.87801.10103.37032.07583.46022.53084.08193.68041.81344.90932.63754.1405

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 109.718 C1 C3 H10 110.139
C1 C3 H14 112.109 C1 O6 C2 110.023
C2 C4 O5 109.718 C2 C4 H9 110.139
C2 C4 H13 112.109 C3 C1 O6 109.718
C3 C1 H7 110.139 C3 C1 H12 112.109
C3 O5 C4 110.023 C4 C2 O6 109.718
C4 C2 H8 110.139 C4 C2 H11 112.109
O5 C3 H10 109.206 O5 C3 H14 105.137
O5 C4 H9 109.206 O5 C4 H13 105.137
O6 C1 H7 109.206 O6 C1 H12 105.137
O6 C2 H8 109.206 O6 C2 H11 105.137
H7 C1 H12 110.390 H8 C2 H11 110.390
H9 C4 H13 110.390 H10 C3 H14 110.390
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability