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: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.928165
Energy at 298.15K-268.937704
Nuclear repulsion energy240.174707
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 HF/6-311+G(3df,2p)
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 3376 3068 4.72      
2 A 3254 2957 21.29      
3 A 3243 2947 51.56      
4 A 3218 2924 18.25      
5 A 3197 2905 77.27      
6 A 3177 2886 26.04      
7 A 3167 2878 26.93      
8 A 3152 2864 57.71      
9 A 1865 1694 91.33      
10 A 1655 1503 0.61      
11 A 1627 1478 0.65      
12 A 1604 1458 4.48      
13 A 1590 1445 6.83      
14 A 1549 1407 29.18      
15 A 1530 1390 4.25      
16 A 1448 1316 9.73      
17 A 1386 1259 52.97      
18 A 1364 1239 5.32      
19 A 1318 1198 8.30      
20 A 1307 1187 70.84      
21 A 1175 1068 1.38      
22 A 1162 1056 9.15      
23 A 1154 1049 57.40      
24 A 1101 1000 6.71      
25 A 1060 963 12.64      
26 A 998 907 44.24      
27 A 982 892 9.76      
28 A 922 837 5.51      
29 A 837 760 37.12      
30 A 766 696 0.65      
31 A 669 608 0.98      
32 A 622 565 0.29      
33 A 359 326 3.10      
34 A 248 225 6.83      
35 A 201 183 3.08      
36 A 106 96 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 28193.1 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 25616.2 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 HF/6-311+G(3df,2p)
ABC
0.25787 0.11056 0.08103

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.350 -0.814 0.076
H2 -1.883 -1.379 -0.674
H3 -1.650 -1.165 1.055
O4 0.038 -1.070 -0.077
C5 -1.526 0.710 -0.056
H6 -2.155 1.107 0.732
H7 -1.980 0.990 -1.002
C8 -0.090 1.162 0.036
H9 0.239 2.178 0.080
C10 2.180 -0.006 0.010
H11 2.521 -0.508 -0.889
H12 2.637 0.972 0.062
H13 2.505 -0.596 0.859
C14 0.697 0.107 -0.001

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.07981.08311.41971.54002.18372.19312.34353.38813.62234.00104.36923.93992.2465
H21.07981.75832.03542.20812.86912.39303.18984.21044.34344.49455.14834.71383.0533
H31.08311.75832.03472.18342.34982.99722.98103.96234.13644.64844.89264.19862.8714
O41.41972.03542.03472.37003.19423.02782.23833.25812.39372.67213.30862.68091.3516
C51.54002.20812.18342.37001.08331.08571.50822.30023.77564.30774.17364.33502.3046
H62.18372.86912.34983.19421.08331.74692.17992.70344.53395.20574.84124.96313.1103
H72.19312.39302.99723.02781.08571.74692.16262.73994.39514.74424.73805.10742.9911
C82.34353.18982.98102.23831.50822.17992.16261.06942.55313.23412.73433.24021.3166
H93.38814.21043.96233.25812.30022.70342.73991.06942.92233.65452.68423.66492.1223
C103.62234.34344.13642.39373.77564.53394.39512.55312.92231.08391.08051.08371.4872
H114.00104.49454.64842.67214.30775.20574.74423.23413.65451.08391.76261.74972.1193
H124.36925.14834.89263.30864.17364.84124.73802.73432.68421.08051.76261.76332.1249
H133.93994.71384.19862.68094.33504.96315.10743.24023.66491.08371.74971.76332.1213
C142.24653.05332.87141.35162.30463.11032.99111.31662.12231.48722.11932.12492.1213

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 108.292 C1 C5 H6 111.506
C1 C5 H7 112.124 C1 C5 C8 100.493
H2 C1 H3 108.769 H2 C1 O4 108.277
H2 C1 C5 113.720 H3 C1 O4 108.027
H3 C1 C5 111.500 O4 C1 C5 106.334
O4 C14 C8 114.035 O4 C14 C10 114.881
C5 C8 H9 125.489 C5 C8 C14 109.161
H6 C5 H7 107.298 H6 C5 C8 113.518
H7 C5 C8 111.943 C8 C14 C10 131.078
H9 C8 C14 125.297 H11 C10 H12 109.043
H11 C10 H13 107.643 H11 C10 C14 110.045
H12 C10 H13 109.128 H12 C10 C14 110.702
H13 C10 C14 110.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.315      
2 H 0.122      
3 H 0.124      
4 O -0.996      
5 C -0.450      
6 H 0.117      
7 H 0.118      
8 C -0.340      
9 H 0.119      
10 C -0.119      
11 H 0.133      
12 H 0.124      
13 H 0.131      
14 C 0.601      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.413 0.719 0.108 0.836
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.555 1.148 -0.007
y 1.148 -38.120 -0.206
z -0.007 -0.206 -37.725
Traceless
 xyz
x 5.368 1.148 -0.007
y 1.148 -2.980 -0.206
z -0.007 -0.206 -2.388
Polar
3z2-r2-4.775
x2-y25.566
xy1.148
xz-0.007
yz-0.206


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.174 -0.620 -0.008
y -0.620 8.911 -0.004
z -0.008 -0.004 6.976


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