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 C5H6O (3-Methylfuran)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-269.026652
Energy at 298.15K-269.033109
HF Energy-269.026652
Nuclear repulsion energy220.154924
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 PBEPBE/6-31G(2df,p)
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' 3217 3184 0.87      
2 A' 3205 3172 0.99      
3 A' 3184 3151 1.50      
4 A' 3061 3029 14.06      
5 A' 2970 2939 32.29      
6 A' 1597 1580 2.19      
7 A' 1497 1482 10.02      
8 A' 1449 1434 6.04      
9 A' 1371 1357 3.93      
10 A' 1362 1348 0.66      
11 A' 1252 1239 4.46      
12 A' 1221 1208 2.50      
13 A' 1175 1163 13.99      
14 A' 1074 1063 12.03      
15 A' 1029 1018 14.31      
16 A' 982 972 6.25      
17 A' 950 941 1.41      
18 A' 864 855 19.88      
19 A' 630 624 1.79      
20 A' 306 303 0.90      
21 A" 3028 2997 15.58      
22 A" 1432 1418 5.14      
23 A" 1023 1012 2.27      
24 A" 787 779 8.60      
25 A" 734 726 45.93      
26 A" 687 680 0.68      
27 A" 609 602 10.05      
28 A" 606 600 0.95      
29 A" 258 255 2.39      
30 A" 122 121 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20840.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 20625.4 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 PBEPBE/6-31G(2df,p)
ABC
0.29537 0.11148 0.08218

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.691 -1.471 0.000
C2 -1.081 -0.159 0.000
C3 0.675 -1.465 0.000
C4 0.000 0.683 0.000
C5 1.151 -0.184 0.000
C6 -0.014 2.181 0.000
H7 -2.155 0.009 0.000
H8 1.145 -2.444 0.000
H9 2.196 0.117 0.000
H10 -1.044 2.570 0.000
H11 0.499 2.592 0.886
H12 0.499 2.592 -0.886

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.36871.36582.26172.24693.71402.08152.07793.29504.05634.32484.3248
C21.36872.18901.37062.23312.57201.08643.19053.28962.72943.29383.2938
C31.36582.18902.25171.36663.71083.19081.08592.19504.38634.15624.1562
C42.26171.37062.25171.44151.49822.25783.33022.26822.15672.16282.1628
C52.24692.23311.36661.44152.63703.31192.25991.08763.52242.98612.9861
C63.71402.57203.71081.49822.63703.04984.76833.02451.10091.10351.1035
H72.08151.08643.19082.25783.31193.04984.11174.35262.79193.80783.8078
H82.07793.19051.08593.33022.25994.76834.11172.76865.47135.15385.1538
H93.29503.28962.19502.26821.08763.02454.35262.76864.06433.12903.1290
H104.05632.72944.38632.15673.52241.10092.79195.47134.06431.77961.7796
H114.32483.29384.15622.16282.98611.10353.80785.15383.12901.77961.7730
H124.32483.29384.15622.16282.98611.10353.80785.15383.12901.77961.7730

picture of 3-Methylfuran state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 111.312 O1 C2 H7 115.475
O1 C3 C5 110.633 O1 C3 H8 115.412
C2 O1 C3 106.357 C2 C4 C5 105.114
C2 C4 C6 127.360 C3 C5 C4 106.585
C3 C5 H9 126.482 C4 C2 H7 133.213
C4 C5 H9 126.933 C4 C6 H10 111.239
C4 C6 H11 111.566 C4 C6 H12 111.566
C5 C3 H8 133.956 C5 C4 C6 127.527
H10 C6 H11 107.669 H10 C6 H12 107.669
H11 C6 H12 106.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.114      
2 C -0.104      
3 C -0.007      
4 C 0.254      
5 C -0.279      
6 C -0.543      
7 H 0.131      
8 H 0.134      
9 H 0.108      
10 H 0.136      
11 H 0.142      
12 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.347 0.699 0.000 0.780
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.794 -1.744 0.000
y -1.744 -32.941 0.000
z 0.000 0.000 -37.030
Traceless
 xyz
x 3.192 -1.744 0.000
y -1.744 1.471 0.000
z 0.000 0.000 -4.662
Polar
3z2-r2-9.325
x2-y21.147
xy-1.744
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.743 -0.243 0.000
y -0.243 10.049 0.000
z 0.000 0.000 4.607


<r2> (average value of r2) Å2
<r2> 144.558
(<r2>)1/2 12.023