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

using model chemistry: MP3/6-31G*

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 MP3/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP3/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-268.509648
Energy at 298.15K-268.516247
HF Energy-267.666693
Nuclear repulsion energy222.337262
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 MP3/6-31G*
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' 3345 3140 1.57      
2 A' 3317 3114 0.83      
3 A' 3305 3103 4.20      
4 A' 3201 3005 10.66      
5 A' 3106 2915 18.99      
6 A' 1714 1609 10.46      
7 A' 1614 1515 20.58      
8 A' 1556 1460 7.64      
9 A' 1480 1389 6.27      
10 A' 1463 1373 0.62      
11 A' 1322 1241 28.53      
12 A' 1285 1206 2.10      
13 A' 1221 1146 23.46      
14 A' 1153 1083 8.15      
15 A' 1069 1004 16.96      
16 A' 1025 962 1.40      
17 A' 966 906 21.84      
18 A' 915 859 3.37      
19 A' 673 631 1.28      
20 A' 340 319 2.08      
21 A" 3173 2978 13.10      
22 A" 1534 1439 7.03      
23 A" 1095 1028 1.62      
24 A" 803 754 8.03      
25 A" 777 729 22.03      
26 A" 738 692 38.66      
27 A" 625 587 11.22      
28 A" 583 547 0.87      
29 A" 242 227 5.33      
30 A" 128 121 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 21884.1 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 20540.4 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 MP3/6-31G*
ABC
0.29382 0.11812 0.08560

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.037 -0.247 0.000
C2 0.000 0.646 0.000
C3 0.488 -1.498 0.000
C4 -1.185 -0.021 0.000
C5 -0.866 -1.424 0.000
C6 0.371 2.088 0.000
H7 1.190 -2.318 0.000
H8 -2.169 0.426 0.000
H9 -1.556 -2.256 0.000
H10 -0.535 2.699 0.000
H11 0.963 2.343 0.885
H12 0.963 2.343 -0.885

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.36871.36612.23392.23802.42912.07633.27683.28063.34002.73792.7379
C21.36872.19851.35972.24391.48973.19352.18053.29262.12242.14232.1423
C31.36612.19852.23181.35623.58851.07913.28102.18054.32043.96973.9697
C42.23391.35972.23181.43922.62113.30391.08122.26552.79703.31393.3139
C52.23802.24391.35621.43923.72422.24162.26341.08074.13714.27984.2798
C62.42911.48973.58852.62113.72424.48203.03574.75251.09251.09471.0947
H72.07633.19351.07913.30392.24164.48204.33752.74695.30564.74924.7492
H83.27682.18053.28101.08122.26343.03574.33752.75112.79983.77703.7770
H93.28063.29262.18052.26551.08074.75252.74692.75115.05945.31735.3173
H103.34002.12244.32042.79704.13711.09255.30562.79985.05941.77591.7759
H112.73792.14233.96973.31394.27981.09474.74923.77705.31731.77591.7701
H122.73792.14233.96973.31394.27981.09474.74923.77705.31731.77591.7701

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 109.922 O1 C2 C6 116.314
O1 C3 C5 110.595 O1 C3 H7 115.739
C2 O1 C3 107.011 C2 C4 C5 106.554
C2 C4 H8 126.213 C2 C6 H10 109.595
C2 C6 H11 111.057 C2 C6 H12 111.057
C3 C5 C6 73.720 C3 C5 H9 126.593
C4 C2 C6 133.764 C4 C5 H9 127.487
C5 C3 H7 133.666 C5 C4 H8 127.233
H10 C6 H11 108.576 H10 C6 H12 108.576
H11 C6 H12 107.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability