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All results from a given calculation for C5H10O (2H-Pyran, tetrahydro-)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-269.094335
Energy at 298.15K-269.107225
HF Energy-268.522245
Nuclear repulsion energy256.264565
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3151 2998 63.24      
2 A' 3143 2990 13.94      
3 A' 3126 2973 23.37      
4 A' 3089 2938 6.48      
5 A' 3073 2923 19.25      
6 A' 3029 2882 78.58      
7 A' 1597 1519 7.22      
8 A' 1581 1504 1.87      
9 A' 1578 1501 8.08      
10 A' 1466 1394 0.73      
11 A' 1431 1361 2.09      
12 A' 1340 1275 1.39      
13 A' 1334 1269 3.90      
14 A' 1211 1152 1.58      
15 A' 1073 1021 4.76      
16 A' 1022 972 5.63      
17 A' 899 856 8.10      
18 A' 851 809 11.40      
19 A' 808 768 3.25      
20 A' 557 530 3.80      
21 A' 436 415 2.13      
22 A' 396 377 6.02      
23 A' 251 238 5.55      
24 A" 3146 2993 10.17      
25 A" 3139 2986 40.54      
26 A" 3089 2938 27.26      
27 A" 3027 2879 12.93      
28 A" 1583 1506 0.05      
29 A" 1566 1490 2.25      
30 A" 1430 1360 1.81      
31 A" 1427 1358 0.16      
32 A" 1418 1349 14.10      
33 A" 1349 1283 2.46      
34 A" 1251 1190 8.30      
35 A" 1220 1161 6.29      
36 A" 1087 1034 2.94      
37 A" 1077 1024 60.01      
38 A" 1030 980 6.40      
39 A" 874 832 0.81      
40 A" 840 799 0.35      
41 A" 459 437 0.08      
42 A" 240 228 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 32845.6 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 31246.0 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 MP2/3-21G*
ABC
0.15087 0.14604 0.08443

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 1.467 0.000
C2 0.066 -1.477 0.000
H3 -1.000 -1.743 0.000
H4 0.647 -2.407 0.000
C5 0.379 -0.639 1.268
C6 0.379 -0.639 -1.268
C7 -0.377 0.704 -1.207
C8 -0.377 0.704 1.207
H9 0.093 -1.183 2.177
H10 0.093 -1.183 -2.177
H11 1.454 -0.431 1.308
H12 1.454 -0.431 -1.308
H13 -1.463 0.514 -1.215
H14 -1.463 0.514 1.215
H15 -0.118 1.351 -2.050
H16 -0.118 1.351 2.050

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.94483.36263.92752.48752.48751.47691.47693.43083.43082.72552.72552.12682.12682.05632.0563
C22.94481.09911.09621.55161.55162.53192.53192.19652.19652.17522.17522.78902.78903.49743.4974
H33.36261.09911.77562.17472.17472.79922.79922.49942.49943.07533.07532.60522.60523.81493.8149
H43.92751.09621.77562.19172.19173.49043.49042.55762.55762.50322.50323.80243.80244.34824.3482
C52.48751.55162.17472.19172.53592.91581.54271.09703.49901.09612.79893.29962.17383.90052.1952
C62.48751.55162.17472.19172.53591.54272.91583.49901.09702.79891.09612.17383.29962.19523.9005
C71.47692.53192.79923.49042.91581.54272.41413.90292.17333.31172.15711.10212.66101.09333.3303
C81.47692.53192.79923.49041.54272.91582.41412.17333.90292.15713.31172.66101.10213.33031.0933
H93.43082.19652.49942.55761.09703.49903.90292.17334.35331.78153.81574.09942.49544.93232.5461
H103.43082.19652.49942.55763.49901.09702.17333.90294.35333.81571.78152.49544.09942.54614.9323
H112.72552.17523.07532.50321.09612.79893.31172.15711.78153.81572.61553.97083.06794.11342.4898
H122.72552.17523.07532.50322.79891.09612.15713.31173.81571.78152.61553.06793.97082.48984.1134
H132.12682.78902.60523.80243.29962.17381.10212.66104.09942.49543.97083.06792.42991.79003.6283
H142.12682.78902.60523.80242.17383.29962.66101.10212.49544.09943.06793.97082.42993.62831.7900
H152.05633.49743.81494.34823.90052.19521.09333.33034.93232.54614.11342.48981.79003.62834.0992
H162.05633.49743.81494.34822.19523.90053.33031.09332.54614.93232.48984.11343.62831.79004.0992

picture of 2H-Pyran, tetrahydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C7 C6 110.913 O1 C7 H13 110.263
O1 C7 H15 105.293 O1 C8 C5 110.913
O1 C8 H14 110.263 O1 C8 H16 105.293
C2 C5 C8 109.820 C2 C5 H9 110.891
C2 C5 H11 109.273 C2 C6 C7 109.820
C2 C6 H10 110.891 C2 C6 H12 109.273
H3 C2 H4 107.958 H3 C2 C5 109.057
H3 C2 C6 109.057 H4 C2 C5 110.559
H4 C2 C6 110.559 C5 C2 C6 109.607
C5 C8 H14 109.421 C5 C8 H16 111.637
C6 C7 H13 109.421 C6 C7 H15 111.637
C7 O1 C8 109.626 C7 C6 H10 109.683
C7 C6 H12 108.480 C8 C5 H9 109.683
C8 C5 H11 108.480 H9 C5 H11 108.647
H10 C6 H12 108.647 H13 C7 H15 109.245
H14 C8 H16 109.245
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability