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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-284.487166
Energy at 298.15K-284.493571
HF Energy-283.626366
Nuclear repulsion energy222.730152
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 MP2/6-31G*
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 3337 3147 0.10      
2 A 3316 3127 0.07      
3 A 3217 3034 4.06      
4 A 3195 3012 9.84      
5 A 3113 2936 12.46      
6 A 1621 1529 18.33      
7 A 1557 1468 11.43      
8 A 1544 1456 8.37      
9 A 1519 1433 16.60      
10 A 1467 1383 8.23      
11 A 1456 1373 7.59      
12 A 1316 1241 0.01      
13 A 1192 1124 16.76      
14 A 1102 1039 9.84      
15 A 1095 1033 1.61      
16 A 1048 988 2.44      
17 A 1004 947 1.89      
18 A 982 926 13.45      
19 A 918 865 12.50      
20 A 806 760 0.02      
21 A 770 726 47.58      
22 A 668 630 5.10      
23 A 644 607 0.00      
24 A 612 577 4.35      
25 A 338 319 6.03      
26 A 268 252 4.73      
27 A 117 110 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 19109.4 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 18020.2 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 MP2/6-31G*
ABC
0.30389 0.11716 0.08592

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.131 0.020 -0.000
H2 -2.524 0.529 -0.885
H3 -2.490 -1.011 -0.000
H4 -2.524 0.529 0.884
C5 1.482 0.583 -0.000
O6 1.386 -0.766 -0.000
N7 0.032 -1.114 0.000
C8 -0.637 0.031 -0.000
C9 0.244 1.149 0.000
H10 -0.010 2.199 0.000
H11 2.489 0.978 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09361.09161.09363.65673.60342.44251.49372.62913.04014.7178
H21.09361.77601.76914.10324.21263.16502.14272.97123.14485.1100
H31.09161.77601.77604.27983.88342.52442.12543.48354.05565.3609
H41.09361.76911.77604.10334.21263.16492.14272.97113.14485.1101
C53.65674.10324.27984.10331.35182.23152.19011.36162.19961.0812
O63.60344.21263.88344.21261.35181.39742.17412.22893.27642.0629
N72.44253.16502.52443.16492.23151.39741.32602.27203.31243.2260
C81.49372.14272.12542.14272.19012.17411.32601.42312.25653.2661
C92.62912.97123.48352.97111.36162.22892.27201.42311.08032.2513
H103.04013.14484.05563.14482.19963.27643.31242.25651.08032.7811
H114.71785.11005.36095.11011.08122.06293.22603.26612.25132.7811

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 119.922 C1 C8 C9 128.659
H2 C1 H3 108.730 H2 C1 H4 107.968
H2 C1 C8 110.872 H3 C1 H4 108.730
H3 C1 C8 109.608 H4 C1 C8 110.871
C5 O6 N7 108.514 C5 C9 C8 103.696
C5 C9 H10 128.151 O6 C5 C9 110.460
O6 C5 H11 115.525 O6 N7 C8 105.911
N7 C8 C9 111.419 C8 C9 H10 128.153
C9 C5 H11 134.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability