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All results from a given calculation for C5H6O (3-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 1 yes CS 1A'
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-266.747701
Energy at 298.15K-266.754232
HF Energy-266.167139
Nuclear repulsion energy217.416265
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
(Å4/u)
Dep P Dep U
1 A' 3331 3158 0.70      
2 A' 3315 3143 0.28      
3 A' 3279 3109 0.71      
4 A' 3152 2988 13.91      
5 A' 3082 2921 20.12      
6 A' 1617 1533 4.99      
7 A' 1575 1493 2.47      
8 A' 1498 1420 2.42      
9 A' 1485 1408 5.23      
10 A' 1377 1305 12.74      
11 A' 1290 1223 0.07      
12 A' 1257 1192 0.15      
13 A' 1176 1115 19.71      
14 A' 1068 1012 10.11      
15 A' 1051 996 5.06      
16 A' 1017 965 10.25      
17 A' 976 926 0.71      
18 A' 872 826 27.79      
19 A' 628 595 2.54      
20 A' 327 310 0.84      
21 A" 3147 2984 16.66      
22 A" 1589 1507 6.03      
23 A" 1126 1067 3.13      
24 A" 811 769 5.84      
25 A" 754 715 75.75      
26 A" 720 682 1.15      
27 A" 609 578 12.78      
28 A" 604 573 9.17      
29 A" 253 240 3.08      
30 A" 116 110 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21551.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 20430.4 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 MP2=FULL/3-21G*
ABC
0.28564 0.10944 0.08032

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 -0.729 -1.490 0.000
C2 -1.108 -0.124 0.000
C3 0.687 -1.487 0.000
C4 0.000 0.687 0.000
C5 1.157 -0.199 0.000
C6 0.026 2.199 0.000
H7 -2.169 0.065 0.000
H8 1.153 -2.458 0.000
H9 2.194 0.104 0.000
H10 -0.995 2.597 0.000
H11 0.541 2.581 0.888
H12 0.541 2.581 -0.888

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.41781.41592.29582.28573.76602.11962.11633.32944.09554.35654.3565
C21.41782.25411.37322.26632.58551.07753.24953.30992.72313.29073.2907
C31.41592.25412.28001.37163.74543.25061.07642.19174.41684.16694.1669
C42.29581.37322.28001.45691.51272.25633.34912.26982.15362.16122.1612
C52.28572.26631.37161.45692.65133.33632.25861.08033.52782.98272.9827
C63.76602.58553.74541.51272.65133.06164.79123.01471.09581.09561.0956
H72.11961.07753.25062.25633.33633.06164.17154.36302.79043.80333.8033
H82.11633.24951.07643.34912.25864.79124.17152.76485.49185.15285.1528
H93.32943.30992.19172.26981.08033.01474.36302.76484.04743.10743.1074
H104.09552.72314.41682.15363.52781.09582.79045.49184.04741.77481.7748
H114.35653.29074.16692.16122.98271.09563.80335.15283.10741.77481.7768
H124.35653.29074.16692.16122.98271.09563.80335.15283.10741.77481.7768

picture of 3-Methylfuran state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.678 O1 C2 H7 115.632
O1 C3 C5 110.157 O1 C3 H8 115.561
C2 O1 C3 105.397 C2 C4 C5 106.373
C2 C4 C6 127.182 C3 C5 C4 107.395
C3 C5 H9 126.323 C4 C2 H7 133.689
C4 C5 H9 126.281 C4 C6 H10 110.272
C4 C6 H11 110.892 C4 C6 H12 110.892
C5 C3 H8 134.283 C5 C4 C6 126.444
H10 C6 H11 108.166 H10 C6 H12 108.166
H11 C6 H12 108.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability