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 (Furan, 2,3-dihydro-5-methyl-)

using model chemistry: M06-2X/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 M06-2X/6-31G*
 hartrees
Energy at 0K-270.418049
Energy at 298.15K-270.427240
HF Energy-270.418049
Nuclear repulsion energy238.451837
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 M06-2X/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 3281 3107 2.82      
2 A 3189 3020 9.97      
3 A 3162 2995 34.95      
4 A 3152 2985 9.10      
5 A 3121 2956 29.32      
6 A 3090 2926 42.56      
7 A 3086 2923 14.61      
8 A 3068 2905 41.93      
9 A 1789 1694 57.35      
10 A 1549 1467 0.15      
11 A 1526 1445 0.32      
12 A 1520 1439 3.79      
13 A 1501 1422 7.34      
14 A 1452 1375 30.95      
15 A 1426 1351 4.79      
16 A 1347 1276 11.69      
17 A 1292 1223 67.85      
18 A 1277 1209 3.35      
19 A 1231 1166 25.60      
20 A 1224 1159 6.57      
21 A 1095 1037 16.61      
22 A 1091 1033 38.29      
23 A 1079 1022 4.15      
24 A 1041 986 4.71      
25 A 1005 952 8.95      
26 A 957 906 19.21      
27 A 938 888 21.04      
28 A 867 821 3.02      
29 A 759 719 26.31      
30 A 699 662 0.38      
31 A 642 608 1.26      
32 A 564 534 1.67      
33 A 335 317 2.20      
34 A 228 216 5.80      
35 A 173 164 2.73      
36 A 119 113 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 26937.3 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 25509.6 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 M06-2X/6-31G*
ABC
0.25285 0.10959 0.08022

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.321 -0.761 0.246
H2 -2.106 -1.442 -0.089
H3 -1.241 -0.798 1.337
O4 -0.017 -1.091 -0.258
C5 -1.493 0.711 -0.143
H6 -2.246 1.176 0.494
H7 -1.758 0.816 -1.204
C8 -0.097 1.132 0.058
H9 0.245 2.115 0.202
C10 2.158 0.011 0.056
H11 2.595 -0.381 -0.867
H12 2.543 1.016 0.228
H13 2.476 -0.637 0.878
C14 0.691 0.052 -0.036

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09221.09491.43581.53132.16102.18532.26133.27423.56774.08854.25273.85072.1873
H21.09221.78752.12442.23902.68642.54203.26844.27344.50634.88155.26834.75113.1709
H31.09491.78752.03162.12842.37043.05392.58263.46143.72114.44424.34083.74862.5177
O41.43582.12442.03162.33163.26722.74942.24663.24932.45812.77493.35162.77711.3630
C51.53132.23902.12842.33161.09121.09831.47192.26063.72204.29264.06424.31342.2828
H62.16102.68642.37043.26721.09121.80322.19362.67794.57625.26464.79905.07243.1887
H72.18532.54203.05392.74941.09831.80322.10972.77044.19084.52684.53714.93602.8178
C82.26133.26842.58262.24661.47192.19362.10971.05062.51753.22352.64763.22741.3392
H93.27424.27343.46143.24932.26062.67792.77041.05062.84693.59102.54693.60582.1233
C103.56774.50633.72112.45813.72204.57624.19082.51752.84691.09441.09071.09381.4705
H114.08854.88154.44422.77494.29265.26464.52683.22353.59101.09441.77661.76822.1230
H124.25275.26834.34083.35164.06424.79904.53712.64762.54691.09071.77661.77752.1050
H133.85074.75113.74862.77714.31345.07244.93603.22743.60581.09381.76821.77752.1206
C142.18733.17092.51771.36302.28283.18872.81781.33922.12331.47052.12302.10502.1206

picture of Furan, 2,3-dihydro-5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 C14 102.769 C1 C5 H6 109.844
C1 C5 H7 111.353 C1 C5 C8 97.678
H2 C1 H3 109.634 H2 C1 O4 113.661
H2 C1 C5 116.175 H3 C1 O4 106.005
H3 C1 C5 107.109 O4 C1 C5 103.545
O4 C14 C8 112.482 O4 C14 C10 120.301
C5 C8 H9 126.508 C5 C8 C14 108.500
H6 C5 H7 110.894 H6 C5 C8 116.928
H7 C5 C8 109.474 C8 C14 C10 127.211
H9 C8 C14 124.924 H11 C10 H12 108.790
H11 C10 H13 107.820 H11 C10 C14 110.883
H12 C10 H13 108.914 H12 C10 C14 109.656
H13 C10 C14 110.720
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.056      
2 H 0.169      
3 H 0.162      
4 O -0.529      
5 C -0.363      
6 H 0.167      
7 H 0.169      
8 C -0.268      
9 H 0.157      
10 C -0.538      
11 H 0.187      
12 H 0.175      
13 H 0.186      
14 C 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.382 0.730 0.151 0.838
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.008 1.212 -0.019
y 1.212 -37.386 -0.191
z -0.019 -0.191 -37.103
Traceless
 xyz
x 5.237 1.212 -0.019
y 1.212 -2.831 -0.191
z -0.019 -0.191 -2.406
Polar
3z2-r2-4.813
x2-y25.378
xy1.212
xz-0.019
yz-0.191


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.401 -0.533 0.023
y -0.533 8.106 0.011
z 0.023 0.011 5.721


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000