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All results from a given calculation for C5H8O (2H-Pyran, 3,4-dihydro-)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-270.444902
Energy at 298.15K-270.454814
Nuclear repulsion energy241.316465
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3228 3088 28.70      
2 A 3206 3067 3.10      
3 A 3132 2996 38.60      
4 A 3116 2981 37.23      
5 A 3074 2941 43.27      
6 A 3062 2930 10.03      
7 A 3033 2901 51.05      
8 A 3024 2893 36.40      
9 A 1740 1665 74.90      
10 A 1528 1462 1.83      
11 A 1513 1447 2.63      
12 A 1500 1435 2.32      
13 A 1448 1385 3.63      
14 A 1414 1352 5.50      
15 A 1387 1327 1.70      
16 A 1363 1304 4.62      
17 A 1314 1257 3.61      
18 A 1295 1238 100.12      
19 A 1267 1212 5.62      
20 A 1220 1168 3.66      
21 A 1118 1070 56.70      
22 A 1112 1064 17.44      
23 A 1080 1033 9.08      
24 A 1045 1000 2.39      
25 A 961 919 11.15      
26 A 945 904 0.40      
27 A 922 882 21.29      
28 A 895 857 1.04      
29 A 861 824 3.80      
30 A 768 735 7.17      
31 A 745 713 19.14      
32 A 510 488 5.74      
33 A 495 473 2.13      
34 A 447 428 15.33      
35 A 281 269 0.66      
36 A 184 176 3.25      

Unscaled Zero Point Vibrational Energy (zpe) 27116.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25942.3 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 B3PW91/6-31G*
ABC
0.17388 0.15859 0.09040

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.628 1.864 -0.197
C2 0.873 1.092 -0.082
H3 -0.750 2.389 0.094
C4 -0.432 1.350 0.063
H5 -2.312 0.496 -0.521
H6 -1.869 0.156 1.142
C7 -1.458 0.253 0.125
H8 -0.723 -1.083 -1.414
H9 -1.434 -1.928 -0.033
C10 -0.820 -1.066 -0.321
H11 1.065 -2.124 -0.014
H12 0.498 -1.189 1.390
C13 0.567 -1.200 0.292
O14 1.439 -0.145 -0.114

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 H12 C13 O14
H11.08652.45192.13874.18344.11603.49593.96214.87683.82074.03193.62163.27912.0198
C21.08652.08451.33793.26973.14522.48553.00853.80012.75323.22192.73992.34161.3601
H32.45192.08451.08622.53002.70852.24983.78494.37223.48044.86484.00423.82743.3540
C42.13871.33791.08622.14632.15781.50342.86153.42942.47763.78373.01202.74832.4011
H54.18343.26972.53002.14631.75391.09842.41112.62412.16944.30403.79333.43913.8266
H64.11603.14522.70852.15781.75391.10083.06242.43152.17593.89182.73422.91513.5512
C73.49592.48552.24981.50341.09841.10082.16642.18711.53203.46922.73962.49812.9334
H83.96213.00853.78492.86152.41113.06242.16641.76781.09702.49793.06042.14232.6914
H94.87683.80014.37223.42942.62412.43152.18711.76781.09642.50652.51082.15423.3819
C103.82072.75323.48042.47762.16942.17591.53201.09701.09642.18322.16371.52282.4482
H114.03193.22194.86483.78374.30403.89183.46922.49792.50652.18321.78031.09352.0165
H123.62162.73994.00423.01203.79332.73422.73963.06042.51082.16371.78031.10052.0586
C133.27912.34163.82742.74833.43912.91512.49812.14232.15421.52281.09351.10051.4272
O142.01981.36013.35402.40113.82663.55122.93342.69143.38192.44822.01652.05861.4272

picture of 2H-Pyran, 3,4-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 123.474 H1 C2 O14 110.791
C2 C4 H3 118.248 C2 C4 C7 121.929
C2 O14 C13 114.281 H3 C4 C7 119.772
C4 C2 O14 125.734 C4 C7 H5 110.194
C4 C7 H6 110.962 C4 C7 C10 109.416
H5 C7 H6 105.789 H5 C7 C10 110.034
H6 C7 C10 110.399 C7 C10 H8 109.878
C7 C10 H9 111.554 C7 C10 C13 109.720
H8 C10 H9 107.406 H8 C10 C13 108.627
H9 C10 C13 109.585 C10 C13 H11 112.077
C10 C13 H12 110.097 C10 C13 O14 112.137
H11 C13 H12 108.476 H11 C13 O14 105.489
H12 C13 O14 108.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.166     0.123
2 C 0.097     0.071
3 H 0.155     0.148
4 C -0.212     -0.425
5 H 0.173     -0.010
6 H 0.171     -0.001
7 C -0.343     0.227
8 H 0.183     0.086
9 H 0.167     0.021
10 C -0.356     -0.185
11 H 0.176     0.020
12 H 0.165     0.018
13 C -0.083     0.246
14 O -0.458     -0.338


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.112 -0.527 0.271 1.260
CHELPG        
AIM        
ESP -1.093 -0.512 0.292 1.242


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.377 0.747 0.165
y 0.747 -32.995 -0.524
z 0.165 -0.524 -37.151
Traceless
 xyz
x -2.304 0.747 0.165
y 0.747 4.269 -0.524
z 0.165 -0.524 -1.965
Polar
3z2-r2-3.930
x2-y2-4.382
xy0.747
xz0.165
yz-0.524


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 140.678
(<r2>)1/2 11.861