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: BLYP/aug-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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-270.453446
Energy at 298.15K-270.463159
Nuclear repulsion energy238.133750
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 BLYP/aug-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 3126 3120 22.48      
2 A 3104 3098 2.92      
3 A 3035 3029 33.26      
4 A 3009 3003 42.42      
5 A 2971 2966 47.78      
6 A 2960 2955 13.24      
7 A 2935 2929 50.91      
8 A 2921 2916 36.03      
9 A 1631 1628 78.26      
10 A 1446 1443 2.63      
11 A 1433 1430 3.51      
12 A 1422 1419 2.18      
13 A 1369 1367 3.29      
14 A 1335 1332 2.84      
15 A 1310 1308 1.70      
16 A 1295 1292 3.58      
17 A 1245 1243 2.23      
18 A 1216 1214 42.27      
19 A 1193 1190 26.52      
20 A 1159 1157 3.72      
21 A 1061 1059 4.11      
22 A 1036 1034 74.06      
23 A 1015 1013 28.05      
24 A 995 994 3.21      
25 A 904 903 7.11      
26 A 883 882 1.04      
27 A 863 862 13.53      
28 A 850 849 8.89      
29 A 802 800 11.45      
30 A 729 728 4.14      
31 A 703 701 31.33      
32 A 495 494 3.89      
33 A 480 479 1.78      
34 A 432 431 12.44      
35 A 266 265 0.47      
36 A 172 172 2.48      

Unscaled Zero Point Vibrational Energy (zpe) 25901.0 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 25851.8 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 BLYP/aug-cc-pVDZ
ABC
0.16885 0.15480 0.08787

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.705 1.839 -0.200
C2 0.920 1.082 -0.081
H3 -0.679 2.439 0.087
C4 -0.392 1.381 0.062
H5 -2.316 0.581 -0.524
H6 -1.881 0.224 1.154
C7 -1.463 0.308 0.128
H8 -0.784 -1.079 -1.425
H9 -1.517 -1.894 -0.018
C10 -0.869 -1.051 -0.322
H11 1.004 -2.182 -0.046
H12 0.471 -1.244 1.397
C13 0.527 -1.246 0.289
O14 1.457 -0.191 -0.110

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 H12 C13 O14
H11.09672.47542.16254.22584.15913.53444.02634.93503.87204.08493.68493.33802.0468
C21.09672.10371.35303.30473.17882.51493.06333.84792.79473.26612.79262.39001.3822
H32.47542.10371.09692.55032.73602.27153.83044.41503.51884.92004.07503.88243.3937
C42.16251.35301.09692.16442.17841.51792.90063.46402.50743.82813.06892.79192.4325
H54.22583.30472.55032.16441.76931.10782.43192.65022.19044.34583.84613.47593.8734
H64.15913.17882.73602.17841.76931.11043.09022.44842.19723.94342.78362.95073.5928
C73.53442.51492.27151.51791.10781.11042.18962.20751.54943.50922.78592.52982.9719
H84.02633.06333.83042.90062.43193.09022.18961.78381.10642.51323.09352.16452.7462
H94.93503.84794.41503.46402.65022.44842.20751.78381.10652.53722.52582.16643.4286
C103.87202.79473.51882.50742.19042.19721.54941.10641.10652.20542.18881.53652.4890
H114.08493.26614.92003.82814.34583.94343.50922.51322.53722.20541.80181.10292.0435
H123.68492.79264.07503.06893.84612.78362.78593.09352.52582.18881.80181.10972.0860
C133.33802.39003.88242.79193.47592.95072.52982.16452.16641.53651.10291.10971.4616
O142.04681.38223.39372.43253.87343.59282.97192.74623.42862.48902.04352.08601.4616

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 123.620 H1 C2 O14 110.797
C2 C4 H3 117.967 C2 C4 C7 122.221
C2 O14 C13 114.340 H3 C4 C7 119.763
C4 C2 O14 125.581 C4 C7 H5 110.058
C4 C7 H6 111.012 C4 C7 C10 109.665
H5 C7 H6 105.809 H5 C7 C10 109.930
H6 C7 C10 110.305 C7 C10 H8 109.952
C7 C10 H9 111.345 C7 C10 C13 110.127
H8 C10 H9 107.437 H8 C10 C13 108.884
H9 C10 C13 109.023 C10 C13 H11 112.307
C10 C13 H12 110.580 C10 C13 O14 112.209
H11 C13 H12 109.040 H11 C13 O14 104.789
H12 C13 O14 107.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.747      
2 C 0.478      
3 H -0.773      
4 C 1.130      
5 H -0.419      
6 H -0.443      
7 C 0.976      
8 H -0.574      
9 H -0.394      
10 C 1.010      
11 H -0.528      
12 H -0.508      
13 C 1.300      
14 O -0.505      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.242 -0.663 0.254 1.431
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.177 0.803 0.189
y 0.803 -35.039 -0.553
z 0.189 -0.553 -38.756
Traceless
 xyz
x -2.280 0.803 0.189
y 0.803 3.928 -0.553
z 0.189 -0.553 -1.648
Polar
3z2-r2-3.297
x2-y2-4.138
xy0.803
xz0.189
yz-0.553


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.022 -0.190 -0.121
y -0.190 10.772 -0.068
z -0.121 -0.068 8.110


<r2> (average value of r2) Å2
<r2> 145.028
(<r2>)1/2 12.043