return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-271.470286
Energy at 298.15K-271.483005
Nuclear repulsion energy258.816087
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 PBEPBE/6-311G*
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' 3025 2993 41.61      
2 A' 3010 2979 75.16      
3 A' 2999 2968 43.09      
4 A' 2960 2929 19.02      
5 A' 2946 2915 27.21      
6 A' 2873 2843 126.20      
7 A' 1464 1449 5.36      
8 A' 1449 1434 7.43      
9 A' 1445 1430 10.44      
10 A' 1375 1360 4.62      
11 A' 1338 1324 1.47      
12 A' 1294 1281 4.07      
13 A' 1255 1242 5.61      
14 A' 1141 1130 2.83      
15 A' 1024 1013 8.21      
16 A' 994 984 8.68      
17 A' 867 858 22.44      
18 A' 838 829 5.37      
19 A' 810 802 3.43      
20 A' 546 540 3.22      
21 A' 425 421 1.44      
22 A' 392 388 3.85      
23 A' 248 245 3.41      
24 A" 3023 2991 53.14      
25 A" 3003 2972 40.08      
26 A" 2960 2930 37.37      
27 A" 2865 2835 24.86      
28 A" 1448 1433 2.04      
29 A" 1432 1417 3.52      
30 A" 1349 1335 5.51      
31 A" 1338 1324 0.87      
32 A" 1313 1299 0.28      
33 A" 1271 1258 7.02      
34 A" 1189 1177 28.88      
35 A" 1163 1151 0.03      
36 A" 1079 1067 65.08      
37 A" 1038 1028 28.24      
38 A" 958 948 4.17      
39 A" 868 859 0.34      
40 A" 794 786 0.63      
41 A" 449 445 0.01      
42 A" 231 228 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 31244.9 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 30920.0 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 PBEPBE/6-311G*
ABC
0.15489 0.14861 0.08600

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.673 -1.270 0.000
C2 0.626 1.330 0.000
H3 1.708 1.095 0.000
H4 0.545 2.429 0.000
C5 -0.019 0.732 1.259
C6 -0.019 0.732 -1.259
C7 -0.019 -0.797 -1.178
C8 -0.019 -0.797 1.178
H9 0.511 1.058 2.171
H10 0.511 1.058 -2.171
H11 -1.063 1.082 1.348
H12 -1.063 1.082 -1.348
H13 1.027 -1.175 -1.201
H14 1.027 -1.175 1.201
H15 -0.561 -1.248 -2.023
H16 -0.561 -1.248 2.023

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.90653.35603.89472.45422.45421.42841.42843.39693.39692.73882.73882.08402.08402.02612.0261
C22.90651.10651.10261.53621.53622.51512.51512.19092.19092.17542.17542.80652.80653.48543.4854
H33.35601.10651.76982.16802.16802.81942.81942.47912.47913.08133.08132.65692.65693.83823.8382
H43.89471.10261.76982.18732.18733.48013.48012.56772.56772.49342.49343.82953.82954.34044.3404
C52.45421.53622.16802.18732.51902.87741.53071.10403.48651.10442.83033.28442.17603.87172.1906
C62.45421.53622.16802.18732.51901.53072.87743.48651.10402.83031.10442.17603.28442.19063.8717
C71.42842.51512.81943.48012.87741.53072.35673.86532.16973.31662.15561.11302.62701.10063.2781
C81.42842.51512.81943.48011.53072.87742.35672.16973.86532.15563.31662.62701.11303.27811.1006
H93.39692.19092.47912.56771.10403.48653.86532.16974.34201.77663.85514.07762.48894.90522.5483
H103.39692.19092.47912.56773.48651.10402.16973.86534.34203.85511.77662.48894.07762.54834.9052
H112.73882.17543.08132.49341.10442.83033.31662.15561.77663.85512.69593.99513.07964.12842.4772
H122.73882.17543.08132.49342.83031.10442.15563.31663.85511.77662.69593.07963.99512.47724.1284
H132.08402.80652.65693.82953.28442.17601.11302.62704.07762.48893.99513.07962.40261.79003.5951
H142.08402.80652.65693.82952.17603.28442.62701.11302.48894.07763.07963.99512.40263.59511.7900
H152.02613.48543.83824.34043.87172.19061.10063.27814.90522.54834.12842.47721.79003.59514.0459
H162.02613.48543.83824.34042.19063.87173.27811.10062.54834.90522.47724.12843.59511.79004.0459

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 112.019 O1 C7 H13 109.549
O1 C7 H15 105.751 O1 C8 C5 112.019
O1 C8 H14 109.549 O1 C8 H16 105.751
C2 C5 C8 110.178 C2 C5 H9 111.099
C2 C5 H11 109.856 C2 C6 C7 110.178
C2 C6 H10 111.099 C2 C6 H12 109.856
H3 C2 H4 106.482 H3 C2 C5 109.161
H3 C2 C6 109.161 H4 C2 C5 110.902
H4 C2 C6 110.902 C5 C2 C6 110.138
C5 C8 H14 109.781 C5 C8 H16 111.668
C6 C7 H13 109.781 C6 C7 H15 111.668
C7 O1 C8 111.161 C7 C6 H10 109.818
C7 C6 H12 108.691 C8 C5 H9 109.818
C8 C5 H11 108.691 H9 C5 H11 107.121
H10 C6 H12 107.121 H13 C7 H15 107.920
H14 C8 H16 107.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.287      
2 C -0.440      
3 H 0.207      
4 H 0.219      
5 C -0.421      
6 C -0.421      
7 C -0.250      
8 C -0.250      
9 H 0.210      
10 H 0.210      
11 H 0.214      
12 H 0.214      
13 H 0.186      
14 H 0.186      
15 H 0.213      
16 H 0.213      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.894 1.014 0.000 1.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.495 -1.476 0.000
y -1.476 -40.791 0.000
z 0.000 0.000 -35.991
Traceless
 xyz
x -1.104 -1.476 0.000
y -1.476 -3.047 0.000
z 0.000 0.000 4.152
Polar
3z2-r28.303
x2-y21.295
xy-1.476
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.212 0.040 0.000
y 0.040 8.844 0.000
z 0.000 0.000 9.821


<r2> (average value of r2) Å2
<r2> 153.878
(<r2>)1/2 12.405