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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-284.526635
Energy at 298.15K-284.533065
HF Energy-283.635461
Nuclear repulsion energy222.896336
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 3368 3154 0.10      
2 A 3346 3134 0.02      
3 A 3247 3041 5.01      
4 A 3223 3019 11.45      
5 A 3136 2937 14.59      
6 A 1624 1521 17.94      
7 A 1554 1456 9.81      
8 A 1540 1442 6.69      
9 A 1522 1425 14.86      
10 A 1464 1371 10.86      
11 A 1453 1361 4.18      
12 A 1318 1235 0.09      
13 A 1192 1116 15.31      
14 A 1102 1032 8.74      
15 A 1092 1023 1.03      
16 A 1047 980 2.80      
17 A 1003 940 1.85      
18 A 983 920 13.29      
19 A 918 860 11.98      
20 A 821 769 0.02      
21 A 777 728 43.45      
22 A 668 626 4.99      
23 A 644 603 0.01      
24 A 612 573 3.89      
25 A 337 316 5.72      
26 A 268 251 4.36      
27 A 117 110 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 19188.4 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 17969.9 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
0.30426 0.11730 0.08601

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 0.022 0.000
H2 2.524 0.526 0.882
H3 2.485 -1.006 -0.001
H4 2.524 0.528 -0.881
C5 -1.487 0.581 -0.000
O6 -1.379 -0.768 0.000
N7 -0.031 -1.113 -0.000
C8 0.638 0.037 0.000
C9 -0.247 1.147 0.000
H10 -0.001 2.194 -0.000
H11 -2.491 0.969 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08921.08741.08923.66073.59832.44211.49342.63093.04394.7179
H21.08921.76871.76304.10714.20603.16132.13912.97393.15285.1112
H31.08741.76871.76874.27723.87162.51862.12133.47854.05265.3535
H41.08921.76301.76874.10684.20633.16192.13912.97333.15145.1109
C53.66074.10714.27724.10681.35392.23322.19311.36222.19221.0764
O63.59834.20603.87164.20631.35391.39122.17182.22463.26702.0625
N72.44213.16132.51863.16192.23321.39121.33002.26963.30673.2221
C81.49342.13912.12132.13912.19312.17181.33001.41962.24993.2645
C92.63092.97393.47852.97331.36222.22462.26961.41961.07572.2505
H103.04393.15284.05263.15142.19223.26703.30672.24991.07572.7743
H114.71795.11125.35355.11091.07642.06253.22213.26452.25052.7743

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 119.645 C1 C8 C9 129.131
H2 C1 H3 108.707 H2 C1 H4 108.060
H2 C1 C8 110.876 H3 C1 H4 108.707
H3 C1 C8 109.555 H4 C1 C8 110.873
C5 O6 N7 108.876 C5 C9 C8 104.049
C5 C9 H10 127.722 O6 C5 C9 109.971
O6 C5 H11 115.661 O6 N7 C8 105.880
N7 C8 C9 111.224 C8 C9 H10 128.229
C9 C5 H11 134.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability