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 C5H8O (2H-Pyran, 3,4-dihydro-)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-270.249585
Energy at 298.15K-270.259529
Nuclear repulsion energy241.759052
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 HSEh1PBE/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 3243 3084 27.00      
2 A 3221 3063 2.65      
3 A 3148 2994 36.91      
4 A 3133 2979 35.01      
5 A 3091 2939 40.27      
6 A 3078 2927 10.04      
7 A 3046 2897 50.62      
8 A 3040 2891 33.99      
9 A 1754 1668 76.75      
10 A 1530 1455 2.10      
11 A 1515 1441 2.93      
12 A 1501 1428 2.57      
13 A 1453 1382 4.11      
14 A 1418 1349 6.03      
15 A 1394 1325 1.66      
16 A 1367 1300 4.74      
17 A 1319 1254 3.94      
18 A 1302 1239 107.14      
19 A 1273 1211 3.95      
20 A 1224 1164 3.72      
21 A 1127 1072 55.26      
22 A 1117 1062 13.30      
23 A 1087 1034 10.65      
24 A 1051 999 2.41      
25 A 969 922 12.09      
26 A 953 906 0.34      
27 A 930 885 20.78      
28 A 898 854 1.07      
29 A 870 827 3.65      
30 A 772 735 7.88      
31 A 749 712 18.25      
32 A 513 488 6.20      
33 A 498 473 2.10      
34 A 450 428 15.10      
35 A 284 270 0.67      
36 A 186 177 3.28      

Unscaled Zero Point Vibrational Energy (zpe) 27251.1 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 25915.8 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 HSEh1PBE/6-31G*
ABC
0.17462 0.15914 0.09080

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.009 1.398 -0.085
C2 1.139 0.816 -0.038
H3 -0.148 2.404 -0.331
C4 -0.069 1.398 -0.047
H5 -2.185 1.134 -0.031
H6 -1.312 0.427 1.340
C7 -1.268 0.613 0.264
H8 -0.985 -0.652 -1.481
H9 -1.934 -1.413 -0.170
C10 -1.094 -0.751 -0.399
H11 0.399 -2.327 -0.132
H12 0.052 -1.356 1.310
C13 0.187 -1.318 0.226
O14 1.341 -0.520 -0.057

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 H12 C13 O14
H11.04722.39172.07784.20223.74153.38713.88744.84273.78704.05843.65563.28502.0310
C21.04722.06491.34143.33972.83882.43462.95793.79862.75173.23042.77832.35151.3508
H32.39172.06491.04772.41962.83822.19463.37024.21693.29434.76664.10753.77803.2919
C42.07781.34141.04772.13272.10041.46662.66423.37572.40713.75593.07312.74202.3804
H54.20223.33972.41962.13271.77201.09522.59442.56272.20904.32073.60573.42133.8945
H63.74152.83882.83822.10041.77201.09253.03752.45992.11173.56122.24502.55613.1441
C73.38712.43462.19461.46661.09521.09252.17352.17611.52663.40322.59092.41812.8620
H83.88742.95793.37022.66422.59443.03752.17351.78831.09182.55803.05992.17532.7304
H94.84273.79864.21693.37572.56272.45992.17611.78831.09382.50642.47742.15993.3963
C103.78702.75173.29432.40712.20902.11171.52661.09181.09382.18742.14481.53382.4693
H114.05843.23044.76663.75594.32073.56123.40322.55802.50642.18741.77361.09182.0395
H123.65562.77834.10753.07313.60572.24502.59093.05992.47742.14481.77361.09352.0572
C133.28502.35153.77802.74203.42132.55612.41812.17532.15991.53381.09181.09351.4312
O142.03101.35083.29192.38043.89453.14412.86202.73043.39632.46932.03952.05721.4312

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 120.381 H1 C2 O14 115.177
C2 C4 H3 119.085 C2 C4 C7 120.158
C2 O14 C13 115.370 H3 C4 C7 120.667
C4 C2 O14 124.305 C4 C7 H5 111.892
C4 C7 H6 109.453 C4 C7 C10 107.042
H5 C7 H6 108.181 H5 C7 C10 113.799
H6 C7 C10 106.277 C7 C10 H8 111.125
C7 C10 H9 111.216 C7 C10 C13 104.389
H8 C10 H9 109.811 H8 C10 C13 110.759
H9 C10 C13 109.428 C10 C13 H11 111.727
C10 C13 H12 108.268 C10 C13 O14 112.727
H11 C13 H12 108.504 H11 C13 O14 107.100
H12 C13 O14 108.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.169      
2 C 0.098      
3 H 0.158      
4 C -0.216      
5 H 0.175      
6 H 0.173      
7 C -0.349      
8 H 0.185      
9 H 0.169      
10 C -0.362      
11 H 0.178      
12 H 0.166      
13 C -0.085      
14 O -0.459      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.104 -0.511 0.268 1.246
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.448 0.765 0.158
y 0.765 -33.079 -0.529
z 0.158 -0.529 -37.250
Traceless
 xyz
x -2.284 0.765 0.158
y 0.765 4.270 -0.529
z 0.158 -0.529 -1.986
Polar
3z2-r2-3.972
x2-y2-4.369
xy0.765
xz0.158
yz-0.529


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.794 -0.260 -0.227
y -0.260 8.433 -0.103
z -0.227 -0.103 5.689


<r2> (average value of r2) Å2
<r2> 140.264
(<r2>)1/2 11.843