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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-306.693203
Energy at 298.15K-306.704512
HF Energy-305.822264
Nuclear repulsion energy264.259647
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 MP2/6-31G*
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 3171 2991 0.00      
2 Ag 3065 2890 0.00      
3 Ag 1557 1468 0.00      
4 Ag 1467 1383 0.00      
5 Ag 1360 1283 0.00      
6 Ag 1184 1117 0.00      
7 Ag 1061 1001 0.00      
8 Ag 873 823 0.00      
9 Ag 449 424 0.00      
10 Ag 431 407 0.00      
11 Au 3170 2990 66.82      
12 Au 3062 2887 43.37      
13 Au 1542 1454 0.16      
14 Au 1431 1350 28.88      
15 Au 1313 1238 35.53      
16 Au 1194 1126 148.55      
17 Au 1142 1077 11.08      
18 Au 928 875 23.36      
19 Au 264 249 1.56      
20 Bg 3172 2992 0.00      
21 Bg 3069 2894 0.00      
22 Bg 1540 1452 0.00      
23 Bg 1392 1313 0.00      
24 Bg 1264 1192 0.00      
25 Bg 1178 1111 0.00      
26 Bg 893 842 0.00      
27 Bg 489 461 0.00      
28 Bu 3173 2992 51.79      
29 Bu 3071 2896 121.11      
30 Bu 1552 1463 10.34      
31 Bu 1449 1366 3.31      
32 Bu 1345 1268 8.07      
33 Bu 1089 1027 10.20      
34 Bu 913 861 62.92      
35 Bu 624 588 14.94      
36 Bu 285 269 22.22      

Unscaled Zero Point Vibrational Energy (zpe) 27579.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 26007.5 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 MP2/6-31G*
ABC
0.16949 0.15665 0.09185

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.759 1.165
C2 0.000 0.759 -1.165
C3 0.000 -0.759 1.165
C4 0.000 -0.759 -1.165
O5 -0.656 -1.252 0.000
O6 0.656 1.252 0.000
H7 -1.037 1.127 1.204
H8 -1.037 1.127 -1.204
H9 1.037 -1.127 -1.204
H10 1.037 -1.127 1.204
H11 0.553 1.155 -2.021
H12 0.553 1.155 2.021
H13 -0.553 -1.155 -2.021
H14 -0.553 -1.155 2.021

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.32961.51722.78002.41441.42481.10112.61203.20012.15193.25791.09373.75742.1680
C22.32962.78001.51722.41441.42482.61201.10112.15193.20011.09373.25792.16803.7574
C31.51722.78002.32961.42482.41442.15193.20012.61201.10113.75742.16803.25791.0937
C42.78001.51722.32961.42482.41443.20012.15191.10112.61202.16803.75741.09373.2579
O52.41442.41441.42481.42482.82662.69312.69312.08112.08113.36733.36732.02632.0263
O61.42481.42482.41442.41442.82662.08112.08112.69312.69312.02632.02633.36733.3673
H71.10112.61202.15193.20012.69312.08112.40813.89583.06243.59601.78783.98022.4712
H82.61201.10113.20012.15192.69312.08112.40813.06243.89581.78783.59602.47123.9802
H93.20012.15192.61201.10112.08112.69313.89583.06242.40812.47123.98021.78783.5960
H102.15193.20011.10112.61202.08112.69313.06243.89582.40813.98022.47123.59601.7878
H113.25791.09373.75742.16803.36732.02633.59601.78782.47123.98024.04272.56054.7853
H121.09373.25792.16803.75743.36732.02631.78783.59603.98022.47124.04274.78532.5605
H133.75742.16803.25791.09372.02633.36733.98022.47121.78783.59602.56054.78534.0427
H142.16803.75741.09373.25792.02633.36732.47123.98023.59601.78784.78532.56054.0427

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 110.261 C1 C3 H10 109.523
C1 C3 H14 111.239 C1 O6 C2 109.668
C2 C4 O5 110.261 C2 C4 H9 109.523
C2 C4 H13 111.239 C3 C1 O6 110.261
C3 C1 H7 109.523 C3 C1 H12 111.239
C3 O5 C4 109.668 C4 C2 O6 110.261
C4 C2 H8 109.523 C4 C2 H11 111.239
O5 C3 H10 110.296 O5 C3 H14 106.390
O5 C4 H9 110.296 O5 C4 H13 106.390
O6 C1 H7 110.296 O6 C1 H12 106.390
O6 C2 H8 110.296 O6 C2 H11 106.390
H7 C1 H12 109.087 H8 C2 H11 109.087
H9 C4 H13 109.087 H10 C3 H14 109.087
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability