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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-48.211720
Energy at 298.15K-48.220733
HF Energy-47.648898
Nuclear repulsion energy125.495705
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 3189 3113 8.32      
2 A 3113 3039 42.85      
3 A 3095 3021 24.24      
4 A 3078 3004 21.50      
5 A 3049 2976 36.13      
6 A 3014 2941 50.14      
7 A 2984 2912 57.18      
8 A 2980 2908 28.14      
9 A 1663 1623 24.85      
10 A 1535 1498 0.71      
11 A 1525 1489 9.00      
12 A 1520 1484 0.38      
13 A 1493 1457 9.65      
14 A 1459 1424 7.77      
15 A 1383 1350 2.25      
16 A 1345 1312 6.55      
17 A 1267 1237 28.14      
18 A 1228 1198 5.08      
19 A 1189 1161 37.94      
20 A 1167 1139 11.52      
21 A 1100 1073 0.84      
22 A 1073 1048 0.92      
23 A 1049 1024 3.48      
24 A 1002 978 14.82      
25 A 921 898 41.15      
26 A 917 895 12.46      
27 A 860 839 20.89      
28 A 819 800 21.73      
29 A 686 669 21.83      
30 A 665 649 16.74      
31 A 602 588 2.27      
32 A 494 482 3.60      
33 A 320 312 3.08      
34 A 222 217 7.97      
35 A 153 150 3.25      
36 A 128 125 3.74      

Unscaled Zero Point Vibrational Energy (zpe) 26143.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 25516.2 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 MP2/CEP-121G
ABC
0.23849 0.10283 0.07531

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 -1.432 -0.816 0.109
H2 -1.984 -1.416 -0.626
H3 -1.676 -1.130 1.137
O4 0.042 -1.134 -0.110
C5 -1.573 0.743 -0.079
H6 -2.230 1.174 0.695
H7 -1.993 0.994 -1.070
C8 -0.104 1.208 0.052
H9 0.217 2.248 0.104
C10 2.250 -0.002 0.014
H11 2.597 -0.510 -0.901
H12 2.714 0.996 0.069
H13 2.576 -0.600 0.881
C14 0.740 0.129 -0.003

Atom - Atom Distances (Å)
  C1 H2 H3 O4 C5 H6 H7 C8 H9 C10 H11 H12 H13 C14
C11.09781.10221.52361.57632.22222.23162.42133.47923.77204.16424.52434.08672.3710
H21.09781.81202.10962.26482.91752.45073.29884.33614.50984.67765.32654.87103.1932
H31.10221.81202.12232.23542.41023.07943.01884.00764.23614.77364.99264.29162.9527
O41.52362.10962.12232.47653.33713.09752.35263.39372.48492.74613.42182.77251.4472
C51.57632.26482.23542.47651.10301.10531.54672.34573.89604.43074.29694.46472.3945
H62.22222.91752.41023.33711.10301.79002.22142.73704.68145.35514.98655.12543.2249
H72.23162.45073.07943.09751.10531.79002.20842.79924.49164.83334.84345.21743.0596
C82.42133.29883.01882.35261.54672.22142.20841.08952.64683.33962.82573.33651.3713
H93.47924.33614.00763.39372.34572.73702.79921.08953.03363.77882.79383.77842.1856
C103.77204.50984.23612.48493.89604.68144.49162.64683.03361.10241.10131.10221.5156
H114.16424.67764.77362.74614.43075.35514.83333.33963.77881.10241.79501.78392.1589
H124.52435.32654.99263.42184.29694.98654.84342.82572.79381.10131.79501.79522.1570
H134.08674.87104.29162.77254.46475.12545.21743.33653.77841.10221.78391.79522.1632
C142.37103.19322.95271.44722.39453.22493.05961.37132.18561.51562.15892.15702.1632

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 105.872 C1 C5 H6 110.835
C1 C5 H7 111.436 C1 C5 C8 101.662
H2 C1 H3 110.900 H2 C1 O4 106.032
H2 C1 C5 114.582 H3 C1 O4 106.750
H3 C1 C5 111.927 O4 C1 C5 106.041
O4 C14 C8 113.145 O4 C14 C10 113.983
C5 C8 H9 124.790 C5 C8 C14 110.150
H6 C5 H7 108.306 H6 C5 C8 112.871
H7 C5 C8 111.679 C8 C14 C10 132.869
H9 C8 C14 124.903 H11 C10 H12 109.085
H11 C10 H13 108.027 H11 C10 C14 110.103
H12 C10 H13 109.113 H12 C10 C14 110.020
H13 C10 C14 110.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability