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All results from a given calculation for C5H6O (2-methylfuran)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (C1)

Jump to S1C2
Vibrational Frequencies calculated at MP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-268.548206
Energy at 298.15K-268.554661
HF Energy-267.683763
Nuclear repulsion energy221.913048
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 MP2/6-31+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' 3364 3164 0.47      
2 A' 3337 3139 0.27      
3 A' 3325 3128 3.37      
4 A' 3228 3037 9.87      
5 A' 3119 2933 24.82      
6 A' 1653 1555 6.75      
7 A' 1557 1464 13.75      
8 A' 1538 1447 16.00      
9 A' 1455 1369 3.97      
10 A' 1439 1353 1.74      
11 A' 1294 1217 28.54      
12 A' 1278 1202 0.97      
13 A' 1201 1130 25.63      
14 A' 1130 1062 2.61      
15 A' 1064 1000 19.61      
16 A' 1008 948 4.23      
17 A' 943 887 18.72      
18 A' 896 843 3.63      
19 A' 663 623 0.98      
20 A' 337 317 2.03      
21 A" 3202 3012 10.72      
22 A" 1513 1423 7.31      
23 A" 1075 1011 0.08      
24 A" 779 733 13.92      
25 A" 758 713 29.59      
26 A" 705 663 58.63      
27 A" 600 565 8.36      
28 A" 542 510 0.01      
29 A" 217 204 5.78      
30 A" 110 104 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 21664.8 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 20377.9 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 MP2/6-31+G**
ABC
0.29180 0.11782 0.08526

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.041 -0.245 0.000
C2 0.000 0.652 0.000
C3 0.495 -1.502 0.000
C4 -1.190 -0.030 0.000
C5 -0.871 -1.424 0.000
C6 0.369 2.091 0.000
H7 1.197 -2.317 0.000
H8 -2.170 0.418 0.000
H9 -1.555 -2.256 0.000
H10 -0.536 2.696 0.000
H11 0.956 2.347 0.883
H12 0.956 2.347 -0.883

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.37431.37052.24132.24572.43122.07773.27933.28353.33722.73942.7394
C21.37432.21021.37132.25071.48613.20132.18313.29752.11302.13662.1366
C31.37052.21022.23741.36773.59571.07583.28472.18384.32273.97553.9755
C42.24131.37132.23741.42992.63263.30601.07792.25602.80303.32133.3213
C52.24572.25071.36771.42993.72732.25262.25381.07744.13304.28134.2813
C62.43121.48613.59572.63263.72734.48553.04184.75421.08871.09041.0904
H72.07773.20131.07583.30602.25264.48554.33812.75255.30414.75264.7526
H83.27932.18313.28471.07792.25383.04184.33812.74372.80403.77823.7782
H93.28353.29752.18382.25601.07744.75422.75252.74375.05565.31665.3166
H103.33722.11304.32272.80304.13301.08875.30412.80405.05561.76851.7685
H112.73942.13663.97553.32134.28131.09044.75263.77825.31661.76851.7664
H122.73942.13663.97553.32134.28131.09044.75263.77825.31661.76851.7664

picture of 2-methylfuran state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 109.436 O1 C2 C6 116.358
O1 C3 C5 110.198 O1 C3 H7 115.755
C2 O1 C3 107.263 C2 C4 C5 106.912
C2 C4 H8 125.667 C2 C6 H10 109.335
C2 C6 H11 111.120 C2 C6 H12 111.120
C3 C5 C6 73.859 C3 C5 H9 126.116
C4 C2 C6 134.206 C4 C5 H9 127.694
C5 C3 H7 134.047 C5 C4 H8 127.421
H10 C6 H11 108.503 H10 C6 H12 108.503
H11 C6 H12 108.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability