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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-48.607299
Energy at 298.15K-48.616533
HF Energy-47.776908
Nuclear repulsion energy128.234767
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/CEP-121G*
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 3261 3107 4.40      
2 A 3187 3037 15.36      
3 A 3177 3027 37.12      
4 A 3159 3010 13.66      
5 A 3136 2988 28.27      
6 A 3072 2927 52.18      
7 A 3071 2926 27.97      
8 A 3060 2916 49.84      
9 A 1700 1620 37.40      
10 A 1549 1476 0.54      
11 A 1529 1457 0.95      
12 A 1525 1453 7.41      
13 A 1507 1435 9.07      
14 A 1446 1378 15.04      
15 A 1413 1346 7.01      
16 A 1347 1284 10.45      
17 A 1277 1217 41.62      
18 A 1257 1198 19.41      
19 A 1220 1162 8.31      
20 A 1208 1151 36.00      
21 A 1097 1045 0.55      
22 A 1065 1015 2.26      
23 A 1047 997 47.30      
24 A 1039 990 3.35      
25 A 971 926 12.33      
26 A 956 911 13.90      
27 A 914 871 26.60      
28 A 872 831 11.55      
29 A 713 680 41.38      
30 A 659 628 1.25      
31 A 622 593 1.97      
32 A 539 513 1.76      
33 A 329 314 2.55      
34 A 235 224 3.75      
35 A 191 182 7.86      
36 A 167 159 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 26758.0 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 25495.1 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 MP2/CEP-121G*
ABC
0.24888 0.10781 0.07932

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.361 -0.803 0.147
H2 -1.967 -1.460 -0.481
H3 -1.527 -1.035 1.208
O4 0.042 -1.094 -0.148
C5 -1.551 0.708 -0.114
H6 -2.268 1.143 0.590
H7 -1.905 0.906 -1.135
C8 -0.122 1.188 0.081
H9 0.201 2.221 0.153
C10 2.201 0.006 0.013
H11 2.544 -0.459 -0.917
H12 2.655 0.996 0.110
H13 2.526 -0.626 0.846
C14 0.706 0.121 0.001

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09261.09871.46251.54452.19262.20482.34643.40343.65474.06224.40023.95322.2688
H21.09261.79622.06862.23792.83132.45593.27674.31894.44564.64165.26704.75843.1429
H31.09871.79622.07482.18702.38233.06602.86173.83414.05084.62894.77694.09002.7896
O41.46252.06862.07482.40453.29932.96042.29953.33242.42852.69403.35582.71651.3926
C51.54452.23792.18702.40451.09531.09951.52042.33013.81844.33304.22124.39542.3348
H62.19262.83132.38233.29931.09531.77872.20692.72934.64735.29154.94875.11703.2001
H72.20482.45593.06602.96041.09951.77872.17732.79724.35744.65934.72785.09012.9542
C82.34643.27672.86172.29951.52042.20692.17731.08422.60653.28872.78303.29961.3532
H93.40344.31893.83413.33242.33012.72932.79721.08422.98733.71742.74313.74082.1656
C103.65474.44564.05082.42853.81844.64734.35742.60652.98731.09551.09311.09511.4988
H114.06224.64164.62892.69404.33305.29154.65933.28873.71741.09551.78421.77122.1347
H124.40025.26704.77693.35584.22124.94874.72782.78302.74311.09311.78421.78582.1387
H133.95324.75844.09002.71654.39545.11705.09013.29963.74081.09511.77121.78582.1410
C142.26883.14292.78961.39262.33483.20012.95421.35322.16561.49882.13472.13872.1410

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 105.221 C1 C5 H6 111.173
C1 C5 H7 111.895 C1 C5 C8 99.912
H2 C1 H3 110.113 H2 C1 O4 107.226
H2 C1 C5 115.045 H3 C1 O4 107.359
H3 C1 C5 110.534 O4 C1 C5 106.160
O4 C14 C8 113.735 O4 C14 C10 114.210
C5 C8 H9 126.094 C5 C8 C14 108.539
H6 C5 H7 108.273 H6 C5 C8 114.084
H7 C5 C8 111.408 C8 C14 C10 132.040
H9 C8 C14 124.996 H11 C10 H12 109.217
H11 C10 H13 107.901 H11 C10 C14 109.765
H12 C10 H13 109.397 H12 C10 C14 110.230
H13 C10 C14 110.288
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability