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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-284.118434
Energy at 298.15K-284.124671
HF Energy-283.523220
Nuclear repulsion energy216.127007
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/SDD
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 3315 3200 0.24      
2 A 3276 3162 0.30      
3 A 3146 3037 11.13      
4 A 3124 3016 21.24      
5 A 3031 2926 24.43      
6 A 1546 1492 10.52      
7 A 1524 1471 12.41      
8 A 1520 1467 24.17      
9 A 1470 1419 8.32      
10 A 1422 1373 10.91      
11 A 1362 1315 11.11      
12 A 1265 1221 1.53      
13 A 1124 1085 16.72      
14 A 1100 1062 1.54      
15 A 1034 998 12.67      
16 A 993 959 6.79      
17 A 959 926 3.17      
18 A 891 860 1.06      
19 A 837 808 16.01      
20 A 835 806 12.14      
21 A 727 702 64.13      
22 A 634 612 0.37      
23 A 632 610 6.51      
24 A 578 558 5.00      
25 A 325 314 6.28      
26 A 250 241 5.09      
27 A 120 116 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 18519.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 17877.1 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/SDD
ABC
0.28614 0.11064 0.08102

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.184 0.033 -0.000
H2 2.575 0.547 0.895
H3 2.557 -1.005 -0.001
H4 2.575 0.548 -0.894
C5 -1.529 0.623 -0.000
O6 -1.442 -0.792 -0.000
N7 -0.010 -1.160 0.000
C8 0.665 0.033 -0.000
C9 -0.250 1.166 0.000
H10 0.017 2.218 -0.000
H11 -2.537 1.022 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10371.10221.10373.75963.71842.49681.51962.68533.07814.8236
H21.10371.79171.78954.20074.32713.22352.17103.02743.18415.2111
H31.10221.79171.79174.39794.00412.57112.15833.54844.10355.4821
H41.10371.78951.79174.20044.32743.22422.17103.02693.18305.2108
C53.75964.20074.39794.20041.41742.34212.27121.38882.22101.0842
O63.71844.32714.00414.32741.41741.47862.26212.29143.34452.1186
N72.49683.22352.57113.22422.34211.47861.37032.33773.37783.3386
C81.51962.17102.15832.17102.27122.26211.37031.45582.27883.3506
C92.68533.02743.54843.02691.38882.29142.33771.45581.08572.2911
H103.07813.18414.10353.18302.22103.34453.37782.27881.08572.8199
H114.82365.21115.48215.21081.08422.11863.33863.35062.29112.8199

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 119.442 C1 C8 C9 128.969
H2 C1 H3 108.626 H2 C1 H4 108.327
H2 C1 C8 110.706 H3 C1 H4 108.626
H3 C1 C8 109.790 H4 C1 C8 110.706
C5 O6 N7 107.933 C5 C9 C8 105.939
C5 C9 H10 127.237 O6 C5 C9 109.477
O6 C5 H11 115.109 O6 N7 C8 105.063
N7 C8 C9 111.589 C8 C9 H10 126.824
C9 C5 H11 135.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability