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

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

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-268.532787
Energy at 298.15K-268.539329
HF Energy-267.676478
Nuclear repulsion energy222.229595
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 MP2/6-31G**
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' 3369 3155 1.03      
2 A' 3345 3133 0.66      
3 A' 3334 3122 3.20      
4 A' 3239 3033 9.80      
5 A' 3129 2930 21.83      
6 A' 1668 1562 6.23      
7 A' 1572 1472 10.39      
8 A' 1551 1452 13.18      
9 A' 1464 1371 3.59      
10 A' 1452 1360 1.05      
11 A' 1308 1225 27.60      
12 A' 1285 1204 0.91      
13 A' 1213 1136 19.91      
14 A' 1139 1067 2.68      
15 A' 1070 1002 17.79      
16 A' 1014 950 2.18      
17 A' 950 890 16.73      
18 A' 899 842 3.68      
19 A' 665 623 1.41      
20 A' 336 314 1.71      
21 A" 3213 3009 13.18      
22 A" 1532 1434 5.58      
23 A" 1090 1021 0.93      
24 A" 797 746 3.69      
25 A" 780 731 25.88      
26 A" 716 671 35.76      
27 A" 621 581 7.75      
28 A" 568 532 0.08      
29 A" 235 220 4.37      
30 A" 117 109 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 21834.3 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 20447.8 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 MP2/6-31G**
ABC
0.29248 0.11818 0.08551

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.041 -0.245 0.000
C2 0.000 0.649 0.000
C3 0.494 -1.498 0.000
C4 -1.188 -0.030 0.000
C5 -0.869 -1.422 0.000
C6 0.368 2.089 0.000
H7 1.195 -2.314 0.000
H8 -2.168 0.416 0.000
H9 -1.553 -2.253 0.000
H10 -0.537 2.693 0.000
H11 0.955 2.346 0.882
H12 0.955 2.346 -0.882

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.37211.36732.23942.24352.42862.07463.27663.28053.33492.73822.7382
C21.37212.20331.36882.24601.48583.19472.18083.29182.11342.13732.1373
C31.36732.20332.23251.36513.58891.07543.27912.18184.31623.97073.9707
C42.23941.36882.23251.42772.62913.30031.07702.25272.80063.31913.3191
C52.24352.24601.36511.42773.72212.24822.25101.07664.12874.27794.2779
C62.42861.48583.58892.62913.72214.47943.03804.74791.08791.08981.0898
H72.07463.19471.07543.30032.24824.47944.33162.74825.29804.74864.7486
H83.27662.18083.27911.07702.25103.03804.33162.73962.80143.77543.7754
H93.28053.29182.18182.25271.07664.74792.74822.73965.05015.31225.3122
H103.33492.11344.31622.80064.12871.08795.29802.80145.05011.76671.7667
H112.73822.13733.97073.31914.27791.08984.74863.77545.31221.76671.7633
H122.73822.13733.97073.31914.27791.08984.74863.77545.31221.76671.7633

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 109.577 O1 C2 C6 116.324
O1 C3 C5 110.380 O1 C3 H7 115.761
C2 O1 C3 107.082 C2 C4 C5 106.844
C2 C4 H8 125.737 C2 C6 H10 109.430
C2 C6 H11 111.230 C2 C6 H12 111.230
C3 C5 C6 73.788 C3 C5 H9 126.240
C4 C2 C6 134.099 C4 C5 H9 127.643
C5 C3 H7 133.858 C5 C4 H8 127.420
H10 C6 H11 108.433 H10 C6 H12 108.433
H11 C6 H12 107.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability