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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (2H-Pyran, tetrahydro-)

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-271.422922
Energy at 298.15K-271.435641
Nuclear repulsion energy258.418890
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/cc-pVDZ
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' 3023 3005 43.51      
2 A' 3017 2999 43.93      
3 A' 3007 2990 35.27      
4 A' 2962 2945 17.47      
5 A' 2949 2932 26.10      
6 A' 2865 2848 115.28      
7 A' 1422 1414 3.21      
8 A' 1408 1400 6.90      
9 A' 1400 1392 7.29      
10 A' 1356 1349 7.72      
11 A' 1323 1315 0.54      
12 A' 1274 1267 3.81      
13 A' 1237 1230 5.55      
14 A' 1128 1122 2.58      
15 A' 1022 1016 8.14      
16 A' 996 990 8.35      
17 A' 873 868 19.64      
18 A' 832 827 4.02      
19 A' 814 810 3.21      
20 A' 543 540 2.78      
21 A' 425 423 1.39      
22 A' 393 391 3.52      
23 A' 248 247 2.83      
24 A" 3021 3003 39.24      
25 A" 3012 2995 42.76      
26 A" 2962 2945 28.53      
27 A" 2858 2841 23.83      
28 A" 1406 1398 1.45      
29 A" 1388 1380 2.05      
30 A" 1333 1325 8.94      
31 A" 1324 1316 1.35      
32 A" 1290 1283 0.01      
33 A" 1250 1243 7.20      
34 A" 1179 1173 32.97      
35 A" 1142 1136 0.35      
36 A" 1090 1084 64.57      
37 A" 1039 1033 23.49      
38 A" 947 941 2.50      
39 A" 873 868 0.57      
40 A" 789 784 0.57      
41 A" 451 448 0.00      
42 A" 231 230 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 31050.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 30870.4 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/cc-pVDZ
ABC
0.15469 0.14816 0.08590

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.674 -1.272 0.000
C2 0.628 1.330 0.000
H3 1.716 1.090 0.000
H4 0.550 2.437 0.000
C5 -0.020 0.733 1.259
C6 -0.020 0.733 -1.259
C7 -0.020 -0.797 -1.177
C8 -0.020 -0.797 1.177
H9 0.512 1.061 2.178
H10 0.512 1.061 -2.178
H11 -1.071 1.084 1.344
H12 -1.071 1.084 -1.344
H13 1.036 -1.175 -1.205
H14 1.036 -1.175 1.205
H15 -0.564 -1.251 -2.030
H16 -0.564 -1.251 2.030

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.90953.35993.90572.45572.45571.42791.42793.40413.40412.74122.74122.09412.09412.03292.0329
C22.90951.11421.10991.53671.53672.51612.51612.19762.19762.18072.18072.80952.80953.49313.4931
H33.35991.11421.78212.17382.17382.82112.82112.48902.48903.09463.09462.65382.65383.84653.8465
H43.90571.10991.78212.19432.19433.48883.48882.57682.57682.50322.50323.83873.83874.35454.3545
C52.45571.53672.17382.19432.51782.87651.53211.11103.49301.11212.82923.28992.18093.87882.1964
C62.45571.53672.17382.19432.51781.53212.87653.49301.11102.82921.11212.18093.28992.19643.8788
C71.42792.51612.82113.48882.87651.53212.35423.87162.17603.31682.16181.12152.63271.10853.2842
C81.42792.51612.82113.48881.53212.87652.35422.17603.87162.16183.31682.63271.12153.28421.1085
H93.40412.19762.48902.57681.11103.49303.87162.17604.35571.78943.86134.08842.49374.91962.5534
H103.40412.19762.48902.57683.49301.11102.17603.87164.35573.86131.78942.49374.08842.55344.9196
H112.74122.18073.09462.50321.11212.82923.31682.16181.78943.86132.68784.00513.09254.13412.4859
H122.74122.18073.09462.50322.82921.11212.16183.31683.86131.78942.68783.09254.00512.48594.1341
H132.09412.80952.65383.83873.28992.18091.12152.63274.08842.49374.00513.09252.40991.80153.6095
H142.09412.80952.65383.83872.18093.28992.63271.12152.49374.08843.09254.00512.40993.60951.8015
H152.03293.49313.84654.35453.87882.19641.10853.28424.91962.55344.13412.48591.80153.60954.0596
H162.03293.49313.84654.35452.19643.87883.28421.10852.55344.91962.48594.13413.60951.80154.0596

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 112.074 O1 C7 H13 109.872
O1 C7 H15 105.855 O1 C8 C5 112.074
O1 C8 H14 109.872 O1 C8 H16 105.855
C2 C5 C8 110.149 C2 C5 H9 111.176
C2 C5 H11 109.786 C2 C6 C7 110.149
C2 C6 H10 111.176 C2 C6 H12 109.786
H3 C2 H4 106.503 H3 C2 C5 109.135
H3 C2 C6 109.135 H4 C2 C5 110.984
H4 C2 C6 110.984 C5 C2 C6 110.007
C5 C8 H14 109.575 C5 C8 H16 111.557
C6 C7 H13 109.575 C6 C7 H15 111.557
C7 O1 C8 111.045 C7 C6 H10 109.803
C7 C6 H12 108.647 C8 C5 H9 109.803
C8 C5 H11 108.647 H9 C5 H11 107.203
H10 C6 H12 107.203 H13 C7 H15 107.767
H14 C8 H16 107.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.275      
2 C -0.046      
3 H 0.019      
4 H 0.017      
5 C -0.039      
6 C -0.039      
7 C 0.116      
8 C 0.116      
9 H 0.013      
10 H 0.013      
11 H 0.027      
12 H 0.027      
13 H 0.006      
14 H 0.006      
15 H 0.020      
16 H 0.020      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.785 0.934 0.000 1.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.161 -1.298 0.000
y -1.298 -40.246 0.000
z 0.000 0.000 -35.903
Traceless
 xyz
x -1.087 -1.298 0.000
y -1.298 -2.714 0.000
z 0.000 0.000 3.800
Polar
3z2-r27.601
x2-y21.084
xy-1.298
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.094 0.057 0.000
y 0.057 8.765 0.000
z 0.000 0.000 9.798


<r2> (average value of r2) Å2
<r2> 153.992
(<r2>)1/2 12.409