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: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-270.415653
Energy at 298.15K-270.424836
Nuclear repulsion energy239.049936
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 B1B95/6-31G*
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 3288 3121 4.35      
2 A 3190 3028 12.53      
3 A 3158 2997 37.62      
4 A 3145 2986 12.04      
5 A 3113 2955 36.38      
6 A 3081 2925 20.27      
7 A 3075 2919 48.03      
8 A 3050 2896 50.07      
9 A 1776 1686 56.71      
10 A 1549 1470 0.27      
11 A 1524 1447 0.36      
12 A 1517 1441 4.20      
13 A 1500 1424 7.79      
14 A 1449 1375 30.49      
15 A 1426 1354 4.10      
16 A 1349 1281 11.21      
17 A 1290 1225 61.34      
18 A 1275 1211 6.60      
19 A 1232 1170 30.12      
20 A 1224 1162 4.77      
21 A 1093 1038 0.61      
22 A 1079 1024 44.19      
23 A 1073 1019 12.94      
24 A 1043 990 5.34      
25 A 1002 951 10.54      
26 A 961 912 15.38      
27 A 936 888 22.25      
28 A 870 826 3.44      
29 A 742 704 26.15      
30 A 692 657 0.72      
31 A 640 607 1.22      
32 A 561 532 1.87      
33 A 333 316 2.16      
34 A 227 215 6.19      
35 A 173 164 2.46      
36 A 126 120 1.65      

Unscaled Zero Point Vibrational Energy (zpe) 26880.1 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 25517.3 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 B1B95/6-31G*
ABC
0.25421 0.11016 0.08066

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.346 -0.812 0.100
H2 -1.911 -1.418 -0.608
H3 -1.605 -1.125 1.117
O4 0.048 -1.086 -0.099
C5 -1.530 0.702 -0.077
H6 -2.202 1.114 0.680
H7 -1.954 0.959 -1.056
C8 -0.108 1.169 0.053
H9 0.211 2.199 0.105
C10 2.180 0.006 0.010
H11 2.533 -0.492 -0.897
H12 2.638 0.993 0.069
H13 2.519 -0.593 0.860
C14 0.701 0.110 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09031.09511.43391.53562.18632.20102.33573.38913.62044.01734.37303.94472.2470
H21.09031.77602.05062.21882.85602.41963.22154.25344.37564.54825.19224.73913.0868
H31.09511.77602.05222.18472.35873.03162.93853.92094.10284.64544.85654.16622.8447
O41.43392.05062.05222.38483.24213.01772.26503.29532.39822.67683.32532.69641.3668
C51.53562.21882.18472.38481.09361.09741.50202.30263.77604.31334.18004.35332.3095
H62.18632.85602.35873.24211.09361.76112.18702.70764.57015.24324.87995.02403.1465
H72.20102.41963.03163.01771.09741.76112.16412.75154.37494.71854.72775.10812.9811
C82.33573.22152.93852.26501.50202.18702.16411.07982.56713.26122.75113.26441.3331
H93.38914.25343.92093.29532.30262.70762.75151.07982.94943.69312.71023.70102.1479
C103.62044.37564.10282.39823.77604.57014.37492.56712.94941.09361.08981.09351.4829
H114.01734.54824.64542.67684.31335.24324.71853.26123.69311.09361.77521.76052.1269
H124.37305.19224.85653.32534.18004.87994.72772.75112.71021.08981.77521.77672.1292
H133.94474.73914.16622.69644.35335.02405.10813.26443.70101.09351.76051.77672.1306
C142.24703.08682.84471.36682.30953.14652.98111.33312.14791.48292.12692.12922.1306

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 106.681 C1 C5 H6 111.402
C1 C5 H7 112.353 C1 C5 C8 100.505
H2 C1 H3 108.713 H2 C1 O4 107.881
H2 C1 C5 114.267 H3 C1 O4 107.731
H3 C1 C5 111.189 O4 C1 C5 106.803
O4 C14 C8 114.049 O4 C14 C10 114.554
C5 C8 H9 125.419 C5 C8 C14 108.950
H6 C5 H7 106.984 H6 C5 C8 113.899
H7 C5 C8 111.776 C8 C14 C10 131.390
H9 C8 C14 125.475 H11 C10 H12 108.785
H11 C10 H13 107.204 H11 C10 C14 110.367
H12 C10 H13 108.932 H12 C10 C14 110.787
H13 C10 C14 110.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 H 0.169      
3 H 0.164      
4 O -0.508      
5 C -0.366      
6 H 0.168      
7 H 0.170      
8 C -0.262      
9 H 0.150      
10 C -0.556      
11 H 0.188      
12 H 0.179      
13 H 0.187      
14 C 0.385      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.366 0.678 0.149 0.785
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.755 1.199 -0.025
y 1.199 -37.021 -0.194
z -0.025 -0.194 -36.779
Traceless
 xyz
x 5.146 1.199 -0.025
y 1.199 -2.754 -0.194
z -0.025 -0.194 -2.391
Polar
3z2-r2-4.783
x2-y25.267
xy1.199
xz-0.025
yz-0.194


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.522 -0.545 0.027
y -0.545 8.114 0.009
z 0.027 0.009 5.688


<r2> (average value of r2) Å2
<r2> 154.517
(<r2>)1/2 12.430