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: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-270.568678
Energy at 298.15K-270.577837
Nuclear repulsion energy237.331626
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 B3LYP/6-31+G**
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 3247 3131 4.63      
2 A 3139 3027 14.44      
3 A 3122 3010 34.37      
4 A 3096 2985 11.63      
5 A 3069 2959 43.90      
6 A 3041 2932 37.06      
7 A 3041 2932 34.18      
8 A 3011 2903 52.27      
9 A 1726 1665 63.92      
10 A 1523 1469 0.61      
11 A 1503 1449 0.74      
12 A 1492 1438 6.62      
13 A 1476 1424 8.59      
14 A 1423 1372 18.13      
15 A 1401 1351 10.27      
16 A 1325 1278 8.40      
17 A 1270 1225 44.95      
18 A 1251 1206 10.84      
19 A 1208 1165 12.54      
20 A 1201 1158 44.40      
21 A 1083 1044 0.30      
22 A 1062 1024 2.75      
23 A 1037 1000 28.51      
24 A 1018 982 20.53      
25 A 978 943 23.52      
26 A 933 900 18.09      
27 A 909 877 27.20      
28 A 857 827 5.99      
29 A 731 705 36.37      
30 A 694 669 2.30      
31 A 629 607 0.93      
32 A 559 539 0.45      
33 A 336 324 2.98      
34 A 228 220 8.17      
35 A 173 167 2.87      
36 A 126 121 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 26458.6 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 25511.4 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 B3LYP/6-31+G**
ABC
0.25122 0.10833 0.07937

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.367 -0.817 0.096
H2 -1.921 -1.416 -0.629
H3 -1.631 -1.143 1.109
O4 0.047 -1.093 -0.094
C5 -1.540 0.711 -0.073
H6 -2.204 1.126 0.692
H7 -1.969 0.974 -1.051
C8 -0.104 1.175 0.050
H9 0.217 2.207 0.101
C10 2.197 0.002 0.010
H11 2.549 -0.494 -0.903
H12 2.657 0.991 0.072
H13 2.536 -0.601 0.860
C14 0.711 0.112 0.002

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09211.09681.45331.54642.19832.20962.35873.41323.65804.05394.41103.98332.2782
H21.09211.78332.06552.23142.87942.42743.23734.27004.40284.57285.21984.77023.1090
H31.09681.78332.06582.20052.37743.04292.97073.95624.14434.68404.90034.20992.8788
O41.45332.06552.06582.40253.25793.04152.27773.31012.41512.69643.34362.71101.3795
C51.54642.23142.20052.40251.09581.09961.51382.31383.80464.34224.20824.38262.3302
H62.19832.87942.37743.25791.09581.76562.19682.71644.59425.26904.90245.04863.1632
H72.20962.42743.04293.04151.09961.76562.17512.76134.40784.75264.76005.14113.0056
C82.35873.23732.97072.27771.51382.19682.17511.08182.58363.27592.76703.28371.3403
H93.41324.27003.95623.31012.31382.71642.76131.08182.96573.70692.72653.72072.1545
C103.65804.40284.14432.41513.80464.59424.40782.58362.96571.09621.09241.09591.4904
H114.05394.57284.68402.69644.34225.26904.75263.27593.70691.09621.77921.76582.1360
H124.41105.21984.90033.34364.20824.90244.76002.76702.72651.09241.77921.78052.1358
H133.98334.77024.20992.71104.38265.04865.14113.28373.72071.09591.76581.78052.1394
C142.27823.10902.87881.37952.33023.16323.00561.34032.15451.49042.13602.13582.1394

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 107.040 C1 C5 H6 111.468
C1 C5 H7 112.148 C1 C5 C8 100.839
H2 C1 H3 109.120 H2 C1 O4 107.628
H2 C1 C5 114.395 H3 C1 O4 107.380
H3 C1 C5 111.588 O4 C1 C5 106.392
O4 C14 C8 113.738 O4 C14 C10 114.552
C5 C8 H9 125.276 C5 C8 C14 109.309
H6 C5 H7 107.071 H6 C5 C8 113.697
H7 C5 C8 111.689 C8 C14 C10 131.701
H9 C8 C14 125.291 H11 C10 H12 108.771
H11 C10 H13 107.322 H11 C10 C14 110.418
H12 C10 H13 108.906 H12 C10 C14 110.632
H13 C10 C14 110.705
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.017     0.043
2 H 0.138     0.058
3 H 0.137     0.052
4 O -0.318     -0.353
5 C -0.476     0.147
6 H 0.148     -0.007
7 H 0.152     0.007
8 C 0.192     -0.432
9 H 0.125     0.149
10 C -0.677     -0.649
11 H 0.167     0.191
12 H 0.155     0.181
13 H 0.167     0.185
14 C 0.073     0.428


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.489 0.768 0.118 0.918
CHELPG        
AIM        
ESP -0.483 0.739 0.111 0.889


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.560 1.281 -0.015
y 1.281 -38.536 -0.279
z -0.015 -0.279 -38.089
Traceless
 xyz
x 5.753 1.281 -0.015
y 1.281 -3.212 -0.279
z -0.015 -0.279 -2.541
Polar
3z2-r2-5.082
x2-y25.976
xy1.281
xz-0.015
yz-0.279


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.578 -0.630 -0.004
y -0.630 9.331 0.008
z -0.004 0.008 7.140


<r2> (average value of r2) Å2
<r2> 157.267
(<r2>)1/2 12.541