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

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-266.751755
Energy at 298.15K-266.758266
HF Energy-266.172099
Nuclear repulsion energy218.625816
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/3-21G*
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' 3331 3158 0.50      
2 A' 3296 3125 0.41      
3 A' 3283 3112 2.18      
4 A' 3171 3006 8.48      
5 A' 3089 2929 13.67      
6 A' 1619 1534 4.26      
7 A' 1579 1497 9.42      
8 A' 1498 1420 4.08      
9 A' 1493 1416 14.13      
10 A' 1402 1329 3.88      
11 A' 1293 1226 10.12      
12 A' 1224 1160 14.17      
13 A' 1177 1115 13.02      
14 A' 1081 1025 15.78      
15 A' 1051 997 2.69      
16 A' 1007 954 2.88      
17 A' 918 870 1.33      
18 A' 892 845 21.84      
19 A' 647 613 1.90      
20 A' 328 311 2.28      
21 A" 3153 2989 12.14      
22 A" 1578 1496 6.77      
23 A" 1134 1076 3.34      
24 A" 811 769 4.87      
25 A" 781 741 17.51      
26 A" 732 694 61.77      
27 A" 621 588 6.06      
28 A" 606 575 4.27      
29 A" 234 222 7.10      
30 A" 105 99 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 21565.5 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 20444.1 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/3-21G*
ABC
0.28390 0.11423 0.08273

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.076 -0.258 0.000
C2 0.000 0.668 0.000
C3 0.484 -1.546 0.000
C4 -1.192 -0.015 0.000
C5 -0.883 -1.434 0.000
C6 0.364 2.123 0.000
H7 1.172 -2.375 0.000
H8 -2.176 0.429 0.000
H9 -1.591 -2.249 0.000
H10 -0.553 2.720 0.000
H11 0.951 2.380 0.888
H12 0.951 2.380 -0.888

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.41991.41802.28092.28522.48552.11883.32403.32803.39462.78612.7861
C21.41992.26711.37372.28071.49983.26082.18933.32292.12502.14992.1499
C31.41802.26712.27041.37163.67181.07653.31342.19034.39084.05254.0525
C42.28091.37372.27041.45302.64423.34011.07972.26972.80833.33383.3338
C52.28522.28071.37161.45303.77002.25972.26811.07904.16764.32444.3244
C62.48551.49983.67182.64423.77004.56993.05354.78941.09431.09511.0951
H72.11883.26081.07653.34012.25974.56994.36682.76525.37884.84174.8417
H83.32402.18933.31341.07972.26813.05354.36682.74132.80773.79133.7913
H93.32803.32292.19032.26971.07904.78942.76522.74135.07635.35495.3549
H103.39462.12504.39082.80834.16761.09435.37882.80775.07631.77971.7797
H112.78612.14994.05253.33384.32441.09514.84173.79135.35491.77971.7766
H122.78612.14994.05253.33384.32441.09514.84173.79135.35491.77971.7766

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 109.459 O1 C2 C6 116.680
O1 C3 C5 109.995 O1 C3 H7 115.607
C2 O1 C3 106.045 C2 C4 C5 107.543
C2 C4 H8 125.926 C2 C6 H10 109.000
C2 C6 H11 110.930 C2 C6 H12 110.930
C3 C5 C6 75.369 C3 C5 H9 126.290
C4 C2 C6 133.861 C4 C5 H9 126.752
C5 C3 H7 134.398 C5 C4 H8 126.531
H10 C6 H11 108.758 H10 C6 H12 108.758
H11 C6 H12 108.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability