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

using model chemistry: MP2=FULL/6-311G*

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=FULL/6-311G*
 hartrees
Energy at 0K-284.705828
Energy at 298.15K-284.712274
HF Energy-283.686004
Nuclear repulsion energy223.409183
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/6-311G*
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 3319 3144 0.08      
2 A 3298 3123 0.06      
3 A 3195 3026 4.97      
4 A 3171 3003 10.99      
5 A 3090 2927 14.78      
6 A 1603 1518 20.98      
7 A 1532 1451 15.46      
8 A 1520 1439 10.53      
9 A 1511 1431 15.00      
10 A 1449 1372 13.33      
11 A 1435 1359 5.11      
12 A 1307 1238 0.02      
13 A 1187 1124 19.51      
14 A 1094 1036 11.97      
15 A 1078 1021 1.19      
16 A 1041 986 1.94      
17 A 1000 947 11.93      
18 A 991 939 6.02      
19 A 924 875 9.55      
20 A 838 794 1.06      
21 A 771 730 55.30      
22 A 669 634 4.77      
23 A 646 612 0.02      
24 A 623 590 3.57      
25 A 337 319 6.22      
26 A 266 252 5.91      
27 A 121 114 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 19007.1 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 18001.6 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/6-311G*
ABC
0.30601 0.11762 0.08633

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.130 0.020 0.000
H2 2.527 0.524 0.884
H3 2.483 -1.012 -0.000
H4 2.527 0.525 -0.883
C5 -1.486 0.573 -0.000
O6 -1.370 -0.767 0.000
N7 -0.036 -1.105 -0.000
C8 0.637 0.038 -0.000
C9 -0.250 1.149 0.000
H10 -0.008 2.201 -0.000
H11 -2.497 0.954 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09231.09041.09233.65833.58782.44091.49292.63423.05364.7202
H21.09231.77311.76694.10984.20003.16332.14222.98063.16475.1192
H31.09041.77311.77314.27373.86082.52082.12323.48374.06465.3535
H41.09231.76691.77314.10974.20023.16362.14222.98033.16425.1191
C53.65834.10984.27374.10971.34552.21732.18981.36352.19881.0799
O63.58784.20003.86084.20021.34551.37592.16322.21953.26582.0570
N72.44093.16332.52083.16362.21731.37591.32652.26333.30523.2078
C81.49292.14222.12322.14222.18982.16321.32651.42162.25653.2651
C92.63422.98063.48372.98031.36352.21952.26331.42161.07942.2552
H103.05363.16474.06463.16422.19883.26583.30522.25651.07942.7841
H114.72025.11925.35355.11911.07992.05703.20783.26512.25522.7841

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 119.824 C1 C8 C9 129.325
H2 C1 H3 108.649 H2 C1 H4 107.959
H2 C1 C8 110.972 H3 C1 H4 108.650
H3 C1 C8 109.569 H4 C1 C8 110.973
C5 O6 N7 109.124 C5 C9 C8 103.657
C5 C9 H10 127.951 O6 C5 C9 110.028
O6 C5 H11 115.574 O6 N7 C8 106.339
N7 C8 C9 110.851 C8 C9 H10 128.392
C9 C5 H11 134.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability