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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-284.593467
Energy at 298.15K-284.599903
HF Energy-283.685664
Nuclear repulsion energy223.196754
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 MP2/6-311G*
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 3316 3151 0.09      
2 A 3294 3131 0.05      
3 A 3192 3033 5.16      
4 A 3167 3010 11.28      
5 A 3087 2933 14.99      
6 A 1599 1519 20.50      
7 A 1531 1455 15.45      
8 A 1519 1443 10.37      
9 A 1506 1432 15.29      
10 A 1446 1374 11.18      
11 A 1432 1361 6.81      
12 A 1304 1239 0.02      
13 A 1185 1126 19.63      
14 A 1092 1038 11.81      
15 A 1077 1024 1.10      
16 A 1039 987 1.88      
17 A 997 948 11.03      
18 A 989 940 6.87      
19 A 922 876 9.57      
20 A 833 791 0.99      
21 A 769 730 55.36      
22 A 667 634 4.81      
23 A 643 611 0.02      
24 A 620 589 3.62      
25 A 336 319 6.18      
26 A 265 252 5.88      
27 A 122 116 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18973.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 18030.9 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 MP2/6-311G*
ABC
0.30542 0.11739 0.08616

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.132 0.018 -0.000
H2 -2.526 0.526 -0.884
H3 -2.490 -1.012 -0.000
H4 -2.526 0.526 0.884
C5 1.482 0.577 -0.000
O6 1.382 -0.765 -0.000
N7 0.036 -1.107 0.000
C8 -0.637 0.032 -0.000
C9 0.246 1.151 0.000
H10 -0.005 2.201 0.000
H11 2.490 0.966 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09281.09061.09283.65693.59982.44191.49472.63373.04804.7182
H21.09281.77421.76734.10454.20923.16362.14292.97543.15325.1122
H31.09061.77421.77424.27813.87972.52732.12703.48774.06235.3587
H41.09281.76731.77424.10464.20923.16342.14282.97533.15315.1123
C53.65694.10454.27814.10461.34552.21982.18811.36352.20261.0806
O63.59984.20923.87974.20921.34551.38902.17072.22783.27472.0554
N72.44193.16362.52733.16342.21981.38901.32302.26793.30863.2128
C81.49472.14292.12702.14282.18812.17071.32301.42522.25943.2637
C92.63372.97543.48772.97531.36352.22782.26791.42521.07982.2522
H103.04803.15324.06233.15312.20263.27473.30862.25941.07982.7844
H114.71825.11225.35875.11231.08062.05543.21283.26372.25222.7844

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 120.013 C1 C8 C9 128.818
H2 C1 H3 108.699 H2 C1 H4 107.927
H2 C1 C8 110.864 H3 C1 H4 108.699
H3 C1 C8 109.723 H4 C1 C8 110.863
C5 O6 N7 108.527 C5 C9 C8 103.350
C5 C9 H10 128.345 O6 C5 C9 110.643
O6 C5 H11 115.388 O6 N7 C8 106.310
N7 C8 C9 111.170 C8 C9 H10 128.304
C9 C5 H11 133.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability