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All results from a given calculation for C5H8O (Furan, 2,3-dihydro-5-methyl-)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-269.677959
Energy at 298.15K-269.687222
HF Energy-268.831881
Nuclear repulsion energy238.212526
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 MP2=FULL/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 3299 3108 2.62      
2 A 3218 3032 10.18      
3 A 3197 3012 30.04      
4 A 3190 3006 9.37      
5 A 3155 2973 22.48      
6 A 3110 2930 14.20      
7 A 3104 2924 44.05      
8 A 3091 2912 36.11      
9 A 1758 1657 33.13      
10 A 1576 1485 0.17      
11 A 1556 1466 0.45      
12 A 1554 1464 5.84      
13 A 1534 1445 7.60      
14 A 1471 1386 15.95      
15 A 1437 1354 8.05      
16 A 1368 1289 9.91      
17 A 1308 1232 42.37      
18 A 1287 1212 14.55      
19 A 1243 1171 15.55      
20 A 1234 1163 23.62      
21 A 1118 1053 0.42      
22 A 1093 1030 3.30      
23 A 1067 1005 39.86      
24 A 1061 999 7.91      
25 A 997 939 16.40      
26 A 974 918 11.42      
27 A 932 878 22.29      
28 A 889 838 10.14      
29 A 733 691 27.66      
30 A 682 642 0.97      
31 A 638 601 1.64      
32 A 549 517 3.04      
33 A 336 317 2.33      
34 A 231 217 4.91      
35 A 177 167 4.77      
36 A 162 153 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 27163.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 25593.4 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 MP2=FULL/6-31G*
ABC
0.25225 0.10943 0.08034

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.349 -0.808 0.132
H2 -1.942 -1.450 -0.522
H3 -1.552 -1.068 1.178
O4 0.049 -1.093 -0.127
C5 -1.534 0.697 -0.102
H6 -2.240 1.127 0.614
H7 -1.912 0.914 -1.110
C8 -0.116 1.173 0.071
H9 0.199 2.206 0.130
C10 2.186 0.007 0.013
H11 2.537 -0.474 -0.904
H12 2.641 0.996 0.091
H13 2.518 -0.607 0.856
C14 0.705 0.115 -0.001

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09121.09641.45031.53422.18462.19692.33413.38853.63014.03584.37953.93872.2561
H21.09121.78502.06102.22462.83172.43623.24994.28644.41034.60005.23104.74273.1189
H31.09641.78502.06582.18012.36863.04832.88243.85774.06054.62714.79864.10832.8078
O41.45032.06102.06582.38963.27442.97342.28043.31262.40772.67903.33642.70061.3808
C51.53422.22462.18012.38961.09431.09791.50582.30993.78554.31134.19054.36252.3155
H62.18462.83172.36863.27441.09431.76782.19332.71074.60575.26254.91155.06993.1745
H72.19692.43623.04832.97341.09791.76782.16462.76814.34504.66494.70955.07892.9524
C82.33413.24992.88242.28041.50582.19332.16461.08202.58123.27122.76303.27381.3405
H93.38854.28643.85773.31262.30992.71072.76811.08202.96653.70422.72613.71692.1551
C103.63014.41034.06052.40773.78554.60574.34502.58122.96651.09391.09151.09361.4853
H114.03584.60004.62712.67904.31135.26254.66493.27123.70421.09391.77851.76502.1261
H124.37955.23104.79863.33644.19054.91154.70952.76302.72611.09151.77851.78042.1291
H133.93874.74274.10832.70064.36255.06995.07893.27383.71691.09361.76501.78042.1306
C142.25613.11892.80781.38082.31553.17452.95241.34052.15511.48532.12612.12912.1306

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 105.642 C1 C5 H6 111.327
C1 C5 H7 112.100 C1 C5 C8 100.309
H2 C1 H3 109.368 H2 C1 O4 107.538
H2 C1 C5 114.800 H3 C1 O4 107.608
H3 C1 C5 110.842 O4 C1 C5 106.356
O4 C14 C8 113.844 O4 C14 C10 114.246
C5 C8 H9 125.611 C5 C8 C14 108.745
H6 C5 H7 107.490 H6 C5 C8 114.104
H7 C5 C8 111.523 C8 C14 C10 131.905
H9 C8 C14 125.314 H11 C10 H12 108.943
H11 C10 H13 107.585 H11 C10 C14 110.119
H12 C10 H13 109.134 H12 C10 C14 110.500
H13 C10 C14 110.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability