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: LSDA/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 LSDA/6-31G*
 hartrees
Energy at 0K-269.079777
Energy at 298.15K-269.088874
Nuclear repulsion energy239.271919
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 LSDA/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 3196 3136 2.35      
2 A 3106 3048 5.89      
3 A 3061 3003 25.20      
4 A 3053 2996 6.17      
5 A 3023 2966 23.17      
6 A 2990 2934 15.06      
7 A 2959 2904 53.51      
8 A 2943 2888 40.83      
9 A 1730 1698 51.22      
10 A 1475 1447 3.79      
11 A 1453 1426 1.41      
12 A 1449 1422 5.16      
13 A 1426 1399 11.33      
14 A 1397 1370 50.16      
15 A 1364 1339 3.20      
16 A 1300 1276 8.71      
17 A 1249 1226 62.18      
18 A 1233 1210 7.67      
19 A 1191 1168 8.87      
20 A 1177 1155 4.48      
21 A 1057 1037 46.55      
22 A 1051 1031 2.58      
23 A 1031 1011 5.62      
24 A 1005 986 12.49      
25 A 974 955 11.65      
26 A 949 931 4.59      
27 A 918 901 20.40      
28 A 854 838 2.83      
29 A 698 685 24.00      
30 A 665 653 2.64      
31 A 636 625 1.63      
32 A 549 539 1.75      
33 A 325 319 2.26      
34 A 223 219 6.48      
35 A 172 169 3.61      
36 A 153 151 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 26015.7 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 25529.2 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 LSDA/6-31G*
ABC
0.25438 0.11077 0.08121

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.334 -0.808 0.116
H2 -1.927 -1.448 -0.557
H3 -1.565 -1.089 1.164
O4 0.050 -1.083 -0.113
C5 -1.525 0.693 -0.095
H6 -2.238 1.116 0.635
H7 -1.923 0.933 -1.104
C8 -0.117 1.168 0.070
H9 0.204 2.209 0.124
C10 2.170 0.009 0.009
H11 2.528 -0.485 -0.913
H12 2.630 1.007 0.074
H13 2.524 -0.604 0.857
C14 0.701 0.109 0.004

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.10211.10901.43031.52722.18772.20552.32143.38653.59964.01004.36003.93362.2354
H21.10211.79532.05932.22622.84432.44243.24244.28704.38464.57155.21424.74543.1058
H31.10901.79532.05902.18182.36493.05902.89623.88434.06064.62914.81414.12862.8137
O41.43032.05932.05902.37423.26072.98982.26513.30442.38732.67133.32502.69921.3633
C51.52722.22622.18182.37421.10461.11041.49572.31063.75924.29954.17074.35682.3040
H62.18772.84432.36493.26071.10461.77662.19592.72434.58785.26074.90185.06773.1706
H72.20552.44243.05902.98981.11041.77662.16642.76754.34024.67494.70315.09642.9648
C82.32143.24242.89622.26511.49572.19592.16641.09062.56453.27042.75183.27611.3402
H93.38654.28703.88433.30442.31062.72432.76751.09062.95253.70602.70823.71902.1615
C103.59964.38464.06062.38733.75924.58784.34022.56452.95251.10501.10041.10481.4718
H114.01004.57154.62912.67134.29955.26074.67493.27043.70601.10501.79141.77342.1283
H124.36005.21424.81413.32504.17074.90184.70312.75182.70821.10041.79141.79372.1285
H133.93364.74544.12862.69924.35685.06775.09643.27613.71901.10481.77341.79372.1346
C142.23543.10582.81371.36332.30403.17062.96481.34022.16151.47182.12832.12852.1346

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 106.269 C1 C5 H6 111.443
C1 C5 H7 112.521 C1 C5 C8 100.334
H2 C1 H3 108.577 H2 C1 O4 108.114
H2 C1 C5 114.744 H3 C1 O4 107.689
H3 C1 C5 110.711 O4 C1 C5 106.746
O4 C14 C8 113.825 O4 C14 C10 114.657
C5 C8 H9 125.891 C5 C8 C14 108.548
H6 C5 H7 106.660 H6 C5 C8 114.390
H7 C5 C8 111.607 C8 C14 C10 131.506
H9 C8 C14 125.243 H11 C10 H12 108.629
H11 C10 H13 106.735 H11 C10 C14 110.560
H12 C10 H13 108.853 H12 C10 C14 110.855
H13 C10 C14 111.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.135      
2 H 0.178      
3 H 0.172      
4 O -0.419      
5 C -0.394      
6 H 0.176      
7 H 0.177      
8 C -0.236      
9 H 0.145      
10 C -0.630      
11 H 0.201      
12 H 0.192      
13 H 0.199      
14 C 0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.314 0.560 0.127 0.654
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.903 1.147 -0.026
y 1.147 -37.021 -0.211
z -0.026 -0.211 -36.956
Traceless
 xyz
x 5.086 1.147 -0.026
y 1.147 -2.592 -0.211
z -0.026 -0.211 -2.493
Polar
3z2-r2-4.987
x2-y25.118
xy1.147
xz-0.026
yz-0.211


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.973 -0.514 0.039
y -0.514 8.339 -0.005
z 0.039 -0.005 5.899


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