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All results from a given calculation for C4H6O (Furan, 2,3-dihydro-)

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-230.560369
Energy at 298.15K-230.567699
HF Energy-229.803301
Nuclear repulsion energy174.483398
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/6-31+G**
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 3343 3140 5.13      
2 A 3318 3116 0.87      
3 A 3233 3036 23.23      
4 A 3188 2995 17.01      
5 A 3125 2935 45.89      
6 A 3113 2924 32.20      
7 A 1675 1573 54.34      
8 A 1558 1464 0.54      
9 A 1537 1443 0.92      
10 A 1432 1345 3.90      
11 A 1364 1281 3.97      
12 A 1335 1254 6.54      
13 A 1264 1187 14.07      
14 A 1231 1156 16.68      
15 A 1179 1108 51.19      
16 A 1115 1047 27.30      
17 A 1094 1028 31.91      
18 A 1034 971 4.92      
19 A 969 910 10.41      
20 A 960 902 39.65      
21 A 898 844 6.76      
22 A 870 817 12.21      
23 A 838 787 7.05      
24 A 718 674 51.76      
25 A 660 620 1.46      
26 A 453 426 24.02      
27 A 194 183 1.95      

Unscaled Zero Point Vibrational Energy (zpe) 20848.4 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 19580.9 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/6-31+G**
ABC
0.27135 0.26033 0.14192

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.907 2.125 0.149
C2 0.493 1.134 0.081
H3 2.268 -0.166 0.038
C4 1.202 -0.003 0.015
O5 0.447 -1.144 -0.127
H6 -1.288 1.019 -1.134
H7 -1.636 1.286 0.576
C8 -0.962 0.785 -0.117
H9 -1.570 -1.316 -0.503
H10 -1.130 -0.948 1.186
C11 -0.922 -0.725 0.137

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07682.66712.15253.31272.77242.71232.31544.29033.83073.3871
C21.07682.20011.34102.28732.15902.19111.50933.25582.86172.3370
H32.66712.20011.07822.07293.92684.19943.37024.04283.67063.2403
C42.15251.34101.07821.37552.92663.16682.30673.11122.77542.2473
O53.31272.28732.07291.37552.94993.27642.38852.05932.06151.4565
H62.77242.15903.92682.92662.94991.76521.09312.43583.04602.1890
H72.71232.19114.19943.16683.27641.76521.08892.81722.37022.1779
C82.31541.50933.37022.30672.38851.09311.08892.22122.17501.5317
H94.29033.25584.04283.11122.05932.43582.81722.22121.78331.0857
H103.83072.86173.67062.77542.06153.04602.37022.17501.78331.0920
C113.38712.33703.24032.24731.45652.18902.17791.53171.08571.0920

picture of Furan, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 125.455 H1 C2 C8 126.286
C2 C4 H3 130.535 C2 C4 O5 114.696
C2 C8 H6 111.112 C2 C8 H7 114.011
C2 C8 C11 100.435 H3 C4 O5 114.759
C4 C2 C8 107.905 C4 O5 C11 104.999
O5 C11 C8 106.104 O5 C11 H9 107.299
O5 C11 H10 107.112 H6 C8 H7 108.003
H6 C8 C11 111.939 H7 C8 C11 111.297
C8 C11 H9 115.060 C8 C11 H10 110.879
H9 C11 H10 109.954
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability