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

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-48.828199
Energy at 298.15K-48.841333
Nuclear repulsion energy144.452903
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 HF/CEP-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' 3326 2998 80.61      
2 A' 3280 2957 200.16      
3 A' 3254 2934 77.88      
4 A' 3221 2904 12.15      
5 A' 3201 2886 168.11      
6 A' 3195 2880 37.83      
7 A' 1656 1493 5.97      
8 A' 1638 1477 4.74      
9 A' 1630 1469 7.64      
10 A' 1544 1392 7.96      
11 A' 1519 1369 1.43      
12 A' 1417 1277 3.03      
13 A' 1392 1254 5.38      
14 A' 1288 1161 4.84      
15 A' 1136 1024 8.55      
16 A' 1107 998 11.39      
17 A' 940 848 6.41      
18 A' 928 837 27.65      
19 A' 865 780 4.22      
20 A' 603 543 7.29      
21 A' 454 409 4.56      
22 A' 398 359 6.34      
23 A' 250 225 9.39      
24 A" 3319 2992 79.08      
25 A" 3269 2947 51.52      
26 A" 3216 2899 119.49      
27 A" 3194 2879 18.47      
28 A" 1644 1482 0.25      
29 A" 1621 1462 3.83      
30 A" 1521 1371 7.36      
31 A" 1513 1364 0.75      
32 A" 1493 1346 5.28      
33 A" 1401 1263 7.50      
34 A" 1330 1199 50.34      
35 A" 1288 1161 2.39      
36 A" 1215 1095 66.30      
37 A" 1159 1045 27.30      
38 A" 1066 961 6.31      
39 A" 951 857 1.86      
40 A" 892 804 0.91      
41 A" 491 442 0.05      
42 A" 240 217 1.02      

Unscaled Zero Point Vibrational Energy (zpe) 34531.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 31126.4 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 HF/CEP-31G
ABC
0.15101 0.14879 0.08467

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 1.433 0.000
C2 0.043 -1.464 0.000
H3 -1.017 -1.734 0.000
H4 0.608 -2.395 0.000
C5 0.364 -0.639 1.270
C6 0.364 -0.639 -1.270
C7 -0.342 0.730 -1.215
C8 -0.342 0.730 1.215
H9 0.051 -1.175 2.167
H10 0.051 -1.175 -2.167
H11 1.440 -0.479 1.342
H12 1.440 -0.479 -1.342
H13 -1.427 0.604 -1.262
H14 -1.427 0.604 1.262
H15 -0.033 1.377 -2.027
H16 -0.033 1.377 2.027

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.89733.32683.87632.45772.45771.44441.44443.39163.39162.74392.74392.07802.07802.02802.0280
C22.89731.09331.08951.54821.54822.53702.53702.18632.18632.17312.17312.83382.83383.49103.4910
H33.32681.09331.75372.17242.17242.82932.82932.47962.47963.06773.06772.68912.68913.84193.8419
H43.87631.08951.75372.18112.18113.48493.48492.54872.54872.48282.48283.83823.83824.33044.3304
C52.45771.54822.17242.18112.54062.92361.54131.09093.49311.09022.82943.34192.18043.88532.1901
C62.45771.54822.17242.18112.54061.54132.92363.49311.09092.82941.09022.18043.34192.19013.8853
C71.44442.53702.82933.48492.92361.54132.42923.90142.16603.34212.15681.09392.70731.08363.3200
C81.44442.53702.82933.48491.54132.92362.42922.16603.90142.15683.34212.70731.09393.32001.0836
H93.39162.18632.47962.54871.09093.49313.90142.16604.33441.75973.83754.13672.48384.91062.5579
H103.39162.18632.47962.54873.49311.09092.16603.90144.33443.83751.75972.48384.13672.55794.9106
H112.74392.17313.06772.48281.09022.82943.34212.15681.75973.83752.68314.02173.06594.11862.4669
H122.74392.17313.06772.48282.82941.09022.15683.34213.83751.75972.68313.06594.02172.46694.1186
H132.07802.83382.68913.83823.34192.18041.09392.70734.13672.48384.02173.06592.52461.76813.6553
H142.07802.83382.68913.83822.18043.34192.70731.09392.48384.13673.06594.02172.52463.65531.7681
H152.02803.49103.84194.33043.88532.19011.08363.32004.91062.55794.11862.46691.76813.65534.0540
H162.02803.49103.84194.33042.19013.88533.32001.08362.55794.91062.46694.11863.65531.76814.0540

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 110.760 O1 C7 H13 109.117
O1 C7 H15 105.801 O1 C8 C5 110.760
O1 C8 H14 109.117 O1 C8 H16 105.801
C2 C5 C8 110.400 C2 C5 H9 110.682
C2 C5 H11 109.676 C2 C6 C7 110.400
C2 C6 H10 110.682 C2 C6 H12 109.676
H3 C2 H4 106.916 H3 C2 C5 109.447
H3 C2 C6 109.447 H4 C2 C5 110.350
H4 C2 C6 110.350 C5 C2 C6 110.265
C5 C8 H14 110.514 C5 C8 H16 111.914
C6 C7 H13 110.514 C6 C7 H15 111.914
C7 O1 C8 114.469 C7 C6 H10 109.563
C7 C6 H12 108.886 C8 C5 H9 109.563
C8 C5 H11 108.886 H9 C5 H11 107.570
H10 C6 H12 107.570 H13 C7 H15 108.584
H14 C8 H16 108.584
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.429      
2 C -0.162      
3 H 0.071      
4 H 0.131      
5 C -0.138      
6 C -0.138      
7 C -0.118      
8 C -0.118      
9 H 0.112      
10 H 0.112      
11 H 0.088      
12 H 0.088      
13 H 0.081      
14 H 0.081      
15 H 0.171      
16 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.717 -2.171 0.000 2.287
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.734 -0.760 0.000
y -0.760 -43.715 0.000
z 0.000 0.000 -34.849
Traceless
 xyz
x 1.548 -0.760 0.000
y -0.760 -7.424 0.000
z 0.000 0.000 5.876
Polar
3z2-r211.751
x2-y25.981
xy-0.760
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.675 -0.168 0.000
y -0.168 7.266 0.000
z 0.000 0.000 8.149


<r2> (average value of r2) Å2
<r2> 129.871
(<r2>)1/2 11.396