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All results from a given calculation for C5H6O (2H-Pyran)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CBS-Q
 hartrees
Energy at 0K-268.845091
Energy at 298.15K-268.839142
HF Energy-267.638369
Nuclear repulsion energy224.623156
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3405 3405 21.64 165.82 0.14 0.24
2 A 3381 3381 10.42 54.89 0.60 0.75
3 A 3371 3371 22.70 121.98 0.25 0.39
4 A 3347 3347 7.00 71.73 0.75 0.86
5 A 3276 3276 41.84 106.59 0.44 0.61
6 A 3150 3150 96.94 130.29 0.26 0.41
7 A 1875 1875 38.11 9.37 0.60 0.75
8 A 1817 1817 60.04 88.25 0.17 0.30
9 A 1648 1648 0.15 16.74 0.68 0.81
10 A 1572 1572 12.29 6.36 0.29 0.44
11 A 1550 1550 3.68 5.13 0.67 0.80
12 A 1480 1480 1.58 1.16 0.58 0.74
13 A 1396 1396 5.29 7.97 0.70 0.83
14 A 1367 1367 82.65 7.47 0.51 0.68
15 A 1282 1282 2.25 20.15 0.67 0.81
16 A 1211 1211 62.18 6.09 0.37 0.54
17 A 1168 1168 9.32 1.81 0.53 0.69
18 A 1094 1094 1.69 3.05 0.75 0.86
19 A 1066 1066 38.09 2.29 0.42 0.59
20 A 1064 1064 1.77 2.49 0.75 0.86
21 A 1040 1040 2.95 5.11 0.49 0.66
22 A 1019 1019 11.49 7.29 0.12 0.21
23 A 942 942 9.37 9.00 0.16 0.27
24 A 861 861 15.81 7.01 0.74 0.85
25 A 800 800 39.81 5.14 0.75 0.86
26 A 664 664 0.04 5.08 0.71 0.83
27 A 604 604 18.56 1.31 0.75 0.86
28 A 540 540 15.66 2.15 0.73 0.84
29 A 357 357 13.11 4.53 0.75 0.86
30 A 165 165 3.57 1.38 0.70 0.83

Unscaled Zero Point Vibrational Energy (zpe) 23253.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 23253.9 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 CBS-Q
ABC
0.18747 0.17666 0.09623

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.155 -1.319 -0.225
C2 1.075 -0.824 -0.006
C3 1.330 0.472 0.116
C4 0.215 1.414 -0.059
C5 -1.024 0.946 -0.067
C6 -1.250 -0.524 0.192
H7 1.825 -1.595 0.010
H8 2.336 0.816 0.274
H9 0.425 2.459 -0.219
H10 -1.883 1.577 -0.224
H11 -2.108 -0.901 -0.352
H12 -1.422 -0.706 1.256

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.34412.35142.76232.43061.41572.01343.31873.82183.37252.00102.0435
C21.34411.32612.39752.74582.35221.07622.08753.35293.81603.20252.8003
C32.35141.32611.47022.40812.76622.12801.07502.20883.41483.73123.2034
C42.76232.39751.47021.32402.44143.41322.22901.07792.11053.29172.9832
C52.43062.74582.40811.32401.50903.81823.37982.10031.07782.15992.1529
C61.41572.35222.76622.44141.50903.26133.82883.44492.23351.08371.0932
H72.01341.07622.12803.41323.81823.26132.47864.29494.88574.01043.5902
H83.31872.08751.07502.22903.37983.82882.47862.56794.31604.80504.1719
H93.82183.35292.20881.07792.10033.44494.29492.56792.47044.20923.9496
H103.37253.81603.41482.11051.07782.23354.88574.31602.47042.49152.7594
H112.00103.20253.73123.29172.15991.08374.01044.80504.20922.49151.7589
H122.04352.80033.20342.98322.15291.09323.59024.17193.94962.75941.7589

picture of 2H-Pyran state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 123.435 O1 C2 H7 112.116
O1 C6 C5 112.377 O1 C6 H11 105.602
O1 C6 H12 108.394 C2 O1 C6 116.900
C2 C3 C4 117.965 C2 C3 H8 120.417
C3 C2 H7 124.384 C3 C4 C5 118.950
C3 C4 H9 119.387 C4 C3 H8 121.501
C4 C5 C6 118.887 C4 C5 H10 122.635
C5 C4 H9 121.613 C5 C6 H11 111.784
C5 C6 H12 110.638 C6 C5 H10 118.456
H11 C6 H12 107.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability