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: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-270.431229
Energy at 298.15K-270.440136
Nuclear repulsion energy235.402964
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/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 3171 3146 6.29      
2 A 3066 3043 16.14      
3 A 3028 3004 45.25      
4 A 3015 2992 18.45      
5 A 2978 2955 60.50      
6 A 2967 2945 29.33      
7 A 2958 2935 37.57      
8 A 2929 2906 61.09      
9 A 1677 1664 45.87      
10 A 1493 1481 0.32      
11 A 1472 1461 0.14      
12 A 1466 1455 4.39      
13 A 1448 1437 5.82      
14 A 1389 1378 7.41      
15 A 1364 1353 8.89      
16 A 1283 1273 11.97      
17 A 1232 1223 27.38      
18 A 1213 1204 6.59      
19 A 1173 1164 7.37      
20 A 1160 1151 42.93      
21 A 1055 1047 0.74      
22 A 1033 1025 2.81      
23 A 1006 998 10.07      
24 A 975 968 12.99      
25 A 940 933 49.81      
26 A 901 894 12.61      
27 A 873 866 17.74      
28 A 825 818 5.17      
29 A 698 693 16.47      
30 A 682 677 4.61      
31 A 612 607 0.74      
32 A 532 528 1.96      
33 A 324 322 1.96      
34 A 216 214 5.91      
35 A 162 161 1.84      
36 A 88 87 1.27      

Unscaled Zero Point Vibrational Energy (zpe) 25699.9 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 25502.0 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/6-31G**
ABC
0.24649 0.10685 0.07801

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.380 -0.824 0.072
H2 -1.913 -1.400 -0.699
H3 -1.694 -1.190 1.066
O4 0.055 -1.110 -0.072
C5 -1.550 0.721 -0.057
H6 -2.197 1.124 0.741
H7 -2.014 1.011 -1.019
C8 -0.104 1.184 0.041
H9 0.217 2.223 0.074
C10 2.211 0.006 0.007
H11 2.568 -0.511 -0.900
H12 2.673 1.002 0.049
H13 2.560 -0.583 0.872
C14 0.716 0.113 0.001

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.10021.10401.47111.56002.21582.22722.37973.44053.68714.07844.44594.02842.2973
H21.10021.79072.08602.24612.92002.43433.23994.27344.41424.57265.23074.81103.1129
H31.10401.79072.08812.22142.39033.04853.03554.03524.21934.74224.99104.30182.9390
O41.47112.08602.08812.43543.27533.11142.30263.34052.42912.71263.36582.72831.3923
C51.56002.24612.22142.43541.10391.10701.52102.32233.82914.38004.23334.41112.3462
H62.21582.92002.39033.27531.10391.77322.20812.73514.60725.29864.92095.05663.1709
H72.22722.43433.04853.11141.10701.77322.19152.76474.46334.83004.80745.20063.0496
C82.37973.23993.03552.30261.52102.20812.19151.08802.59823.30132.78303.30361.3490
H93.44054.27344.03523.34052.32232.73512.76471.08802.98313.73532.74303.74222.1691
C103.68714.41424.21932.42913.82914.60724.46332.59822.98311.10321.09881.10311.4996
H114.07844.57264.74222.71264.38005.29864.83003.30133.73531.10321.78891.77332.1525
H124.44595.23074.99103.36584.23334.92094.80742.78302.74301.09881.78891.79012.1502
H134.02844.81104.30182.72834.41115.05665.20063.30363.74221.10311.77331.79012.1556
C142.29733.11292.93901.39232.34623.17093.04961.34902.16911.49962.15252.15022.1556

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 106.664 C1 C5 H6 111.414
C1 C5 H7 112.135 C1 C5 C8 101.127
H2 C1 H3 108.662 H2 C1 O4 107.561
H2 C1 C5 114.082 H3 C1 O4 107.506
H3 C1 C5 111.849 O4 C1 C5 106.884
O4 C14 C8 114.260 O4 C14 C10 114.219
C5 C8 H9 124.953 C5 C8 C14 109.522
H6 C5 H7 106.647 H6 C5 C8 113.592
H7 C5 C8 112.041 C8 C14 C10 131.518
H9 C8 C14 125.424 H11 C10 H12 108.664
H11 C10 H13 106.984 H11 C10 C14 110.659
H12 C10 H13 108.773 H12 C10 C14 110.740
H13 C10 C14 110.910
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.056      
2 H 0.094      
3 H 0.094      
4 O -0.476      
5 C -0.203      
6 H 0.090      
7 H 0.093      
8 C -0.152      
9 H 0.052      
10 C -0.348      
11 H 0.115      
12 H 0.105      
13 H 0.115      
14 C 0.365      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.384 0.609 0.098 0.727
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.251 1.181 -0.021
y 1.181 -37.482 -0.146
z -0.021 -0.146 -37.052
Traceless
 xyz
x 5.016 1.181 -0.021
y 1.181 -2.831 -0.146
z -0.021 -0.146 -2.185
Polar
3z2-r2-4.371
x2-y25.231
xy1.181
xz-0.021
yz-0.146


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


<r2> (average value of r2) Å2
<r2> 158.986
(<r2>)1/2 12.609