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: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-270.250939
Energy at 298.15K-270.260105
Nuclear repulsion energy238.552883
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 HSEh1PBE/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 3281 3120 4.10      
2 A 3182 3026 12.24      
3 A 3149 2995 38.11      
4 A 3136 2982 11.98      
5 A 3101 2949 39.16      
6 A 3073 2922 20.91      
7 A 3070 2920 44.76      
8 A 3043 2894 51.94      
9 A 1771 1684 56.93      
10 A 1548 1472 0.29      
11 A 1523 1449 0.36      
12 A 1515 1441 4.42      
13 A 1497 1423 8.31      
14 A 1448 1377 30.30      
15 A 1425 1355 4.65      
16 A 1347 1281 10.33      
17 A 1289 1226 63.05      
18 A 1274 1211 5.09      
19 A 1232 1171 28.18      
20 A 1224 1164 5.60      
21 A 1094 1040 0.62      
22 A 1076 1023 13.45      
23 A 1070 1017 43.98      
24 A 1043 992 5.21      
25 A 1003 954 13.22      
26 A 958 911 15.77      
27 A 934 888 21.68      
28 A 868 826 3.05      
29 A 738 702 26.29      
30 A 703 669 1.53      
31 A 642 611 1.13      
32 A 562 534 1.93      
33 A 334 318 2.24      
34 A 226 215 6.57      
35 A 174 165 2.35      
36 A 114 108 1.56      

Unscaled Zero Point Vibrational Energy (zpe) 26831.8 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 25517.1 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 HSEh1PBE/6-31G*
ABC
0.25312 0.10975 0.08027

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.317 -0.760 0.245
H2 -2.101 -1.445 -0.090
H3 -1.239 -0.797 1.337
O4 -0.014 -1.093 -0.257
C5 -1.493 0.708 -0.143
H6 -2.249 1.173 0.494
H7 -1.760 0.814 -1.205
C8 -0.101 1.131 0.058
H9 0.239 2.115 0.202
C10 2.155 0.014 0.055
H11 2.597 -0.377 -0.868
H12 2.539 1.021 0.227
H13 2.479 -0.632 0.878
C14 0.690 0.052 -0.035

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09301.09581.43591.52932.16062.18522.25633.26993.56294.08734.24783.85062.1837
H21.09301.78852.12302.23822.68682.54183.26444.27024.50144.87985.26384.75063.1674
H31.09581.78852.03242.12712.36953.05442.57873.45773.71814.44464.33753.75002.5157
O41.43592.12302.03242.33383.27012.75382.24713.25042.45482.77503.34922.77701.3616
C51.52932.23822.12712.33381.09211.09951.46942.25823.71954.29344.06144.31492.2829
H62.16062.68682.36953.27011.09211.80352.19252.67604.57525.26674.79775.07533.1901
H72.18522.54183.05442.75381.09951.80352.10982.76984.19044.52964.53624.93952.8202
C82.25633.26442.57872.24711.46942.19252.10981.05142.51703.22582.64713.22981.3410
H93.26994.27023.45773.25042.25822.67602.76981.05142.84773.59392.54723.60862.1257
C103.56294.50143.71812.45483.71954.57524.19042.51702.84771.09541.09121.09481.4683
H114.08734.87984.44462.77504.29345.26674.52963.22583.59391.09541.77641.76792.1240
H124.24785.26384.33753.34924.06144.79774.53622.64712.54721.09121.77641.77772.1038
H133.85064.75063.75002.77704.31495.07534.93953.22983.60861.09481.76791.77772.1214
C142.18373.16742.51571.36162.28293.19012.82021.34102.12571.46832.12402.10382.1214

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 102.595 C1 C5 H6 109.897
C1 C5 H7 111.403 C1 C5 C8 97.579
H2 C1 H3 109.590 H2 C1 O4 113.485
H2 C1 C5 116.195 H3 C1 O4 106.011
H3 C1 C5 107.087 O4 C1 C5 103.776
O4 C14 C8 112.498 O4 C14 C10 120.286
C5 C8 H9 126.430 C5 C8 C14 108.560
H6 C5 H7 110.758 H6 C5 C8 116.966
H7 C5 C8 109.581 C8 C14 C10 127.209
H9 C8 C14 124.940 H11 C10 H12 108.669
H11 C10 H13 107.650 H11 C10 C14 111.058
H12 C10 H13 108.823 H12 C10 C14 109.686
H13 C10 C14 110.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.081      
2 H 0.176      
3 H 0.171      
4 O -0.504      
5 C -0.384      
6 H 0.175      
7 H 0.176      
8 C -0.273      
9 H 0.158      
10 C -0.589      
11 H 0.195      
12 H 0.187      
13 H 0.194      
14 C 0.399      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.377 0.660 0.128 0.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.813 1.215 -0.021
y 1.215 -37.103 -0.171
z -0.021 -0.171 -36.881
Traceless
 xyz
x 5.180 1.215 -0.021
y 1.215 -2.756 -0.171
z -0.021 -0.171 -2.423
Polar
3z2-r2-4.847
x2-y25.290
xy1.215
xz-0.021
yz-0.171


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.567 -0.562 0.023
y -0.562 8.153 0.007
z 0.023 0.007 5.700


<r2> (average value of r2) Å2
<r2> 155.159
(<r2>)1/2 12.456