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: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-271.643723
Energy at 298.15K-271.656583
Nuclear repulsion energy260.908608
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 B1B95/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' 3113 2993 40.10      
2 A' 3106 2986 46.00      
3 A' 3096 2976 36.43      
4 A' 3049 2931 16.69      
5 A' 3035 2917 27.45      
6 A' 2960 2846 112.61      
7 A' 1470 1413 2.71      
8 A' 1457 1400 8.80      
9 A' 1445 1389 7.39      
10 A' 1408 1353 9.69      
11 A' 1370 1317 0.72      
12 A' 1319 1268 4.77      
13 A' 1275 1226 5.67      
14 A' 1164 1119 3.37      
15 A' 1062 1021 10.69      
16 A' 1027 987 9.05      
17 A' 912 876 20.12      
18 A' 856 823 4.26      
19 A' 845 812 2.14      
20 A' 547 526 3.48      
21 A' 429 412 1.43      
22 A' 394 378 3.62      
23 A' 251 241 3.27      
24 A" 3111 2990 43.79      
25 A" 3102 2982 41.00      
26 A" 3050 2931 26.89      
27 A" 2955 2840 20.32      
28 A" 1455 1398 1.65      
29 A" 1435 1379 2.22      
30 A" 1381 1328 9.25      
31 A" 1375 1322 1.64      
32 A" 1332 1281 0.10      
33 A" 1291 1241 9.76      
34 A" 1234 1186 56.08      
35 A" 1180 1134 0.19      
36 A" 1154 1109 60.76      
37 A" 1073 1031 11.59      
38 A" 973 935 2.35      
39 A" 907 872 0.56      
40 A" 812 780 0.36      
41 A" 457 439 0.01      
42 A" 236 227 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 32050.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 30806.7 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 B1B95/cc-pVDZ
ABC
0.15747 0.15120 0.08762

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.669 -1.252 0.000
C2 0.627 1.316 0.000
H3 1.703 1.070 0.000
H4 0.556 2.414 0.000
C5 -0.020 0.726 1.248
C6 -0.020 0.726 -1.248
C7 -0.020 -0.792 -1.165
C8 -0.020 -0.792 1.165
H9 0.503 1.051 2.160
H10 0.503 1.051 -2.160
H11 -1.063 1.074 1.329
H12 -1.063 1.074 -1.329
H13 1.025 -1.167 -1.187
H14 1.025 -1.167 1.187
H15 -0.555 -1.242 -2.013
H16 -0.555 -1.242 2.013

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.87693.32003.86532.42742.42741.41111.41113.36843.36842.70772.70772.07002.07002.01612.0161
C22.87691.10421.09991.52501.52502.49402.49402.18002.18002.16302.16302.78072.78073.46273.4627
H33.32001.10421.76672.15592.15592.79212.79212.47122.47123.06863.06862.62192.62193.80723.8072
H43.86531.09991.76672.17702.17703.45903.45902.55482.55482.48602.48603.80123.80124.31824.3182
C52.42741.52502.15592.17702.49672.85121.51981.10073.46391.10202.80153.25662.16273.84612.1774
C62.42741.52502.15592.17702.49671.51982.85123.46391.10072.80151.10202.16273.25662.17743.8461
C71.41112.49402.79213.45902.85121.51982.33083.83792.15853.28442.14331.11042.60141.09823.2541
C81.41112.49402.79213.45901.51982.85122.33082.15853.83792.14333.28442.60141.11043.25411.0982
H93.36842.18002.47122.55481.10073.46393.83792.15854.32051.77363.82444.04902.47714.87752.5293
H103.36842.18002.47122.55483.46391.10072.15853.83794.32053.82441.77362.47714.04902.52934.8775
H112.70772.16303.06862.48601.10202.80153.28442.14331.77363.82442.65713.96323.06564.09702.4676
H122.70772.16303.06862.48602.80151.10202.14333.28443.82441.77362.65713.06563.96322.46764.0970
H132.07002.78072.62193.80123.25662.16271.11042.60144.04902.47713.96323.06562.37431.78353.5692
H142.07002.78072.62193.80122.16273.25662.60141.11042.47714.04903.06563.96322.37433.56921.7835
H152.01613.46273.80724.31823.84612.17741.09823.25414.87752.52934.09702.46761.78353.56924.0257
H162.01613.46273.80724.31822.17743.84613.25411.09822.52934.87752.46764.09703.56921.78354.0257

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 111.779 O1 C7 H13 109.786
O1 C7 H15 106.250 O1 C8 C5 111.779
O1 C8 H14 109.786 O1 C8 H16 106.250
C2 C5 C8 109.987 C2 C5 H9 111.217
C2 C5 H11 109.802 C2 C6 C7 109.987
C2 C6 H10 111.217 C2 C6 H12 109.802
H3 C2 H4 106.564 H3 C2 C5 109.120
H3 C2 C6 109.120 H4 C2 C5 111.031
H4 C2 C6 111.031 C5 C2 C6 109.887
C5 C8 H14 109.649 C5 C8 H16 111.537
C6 C7 H13 109.649 C6 C7 H15 111.537
C7 O1 C8 111.356 C7 C6 H10 109.879
C7 C6 H12 108.626 C8 C5 H9 109.879
C8 C5 H11 108.626 H9 C5 H11 107.257
H10 C6 H12 107.257 H13 C7 H15 107.711
H14 C8 H16 107.711
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.319      
2 C -0.051      
3 H 0.020      
4 H 0.019      
5 C -0.045      
6 C -0.045      
7 C 0.137      
8 C 0.137      
9 H 0.016      
10 H 0.016      
11 H 0.029      
12 H 0.029      
13 H 0.005      
14 H 0.005      
15 H 0.023      
16 H 0.023      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.866 0.973 0.000 1.303
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.834 -1.438 0.000
y -1.438 -39.969 0.000
z 0.000 0.000 -35.458
Traceless
 xyz
x -1.121 -1.438 0.000
y -1.438 -2.822 0.000
z 0.000 0.000 3.943
Polar
3z2-r27.886
x2-y21.134
xy-1.438
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.785 0.043 0.000
y 0.043 8.385 0.000
z 0.000 0.000 9.328


<r2> (average value of r2) Å2
<r2> 151.289
(<r2>)1/2 12.300