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

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-285.042208
Energy at 298.15K-285.048492
Nuclear repulsion energy221.597241
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 PBEPBE/6-31+G**
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 3224 3187 0.20      
2 A 3202 3166 0.03      
3 A 3091 3056 4.75      
4 A 3056 3021 8.21      
5 A 2989 2955 16.29      
6 A 1564 1547 27.54      
7 A 1455 1439 9.95      
8 A 1441 1425 18.20      
9 A 1438 1422 10.32      
10 A 1403 1387 31.23      
11 A 1360 1345 1.05      
12 A 1253 1239 1.18      
13 A 1116 1103 17.17      
14 A 1048 1036 11.20      
15 A 1023 1012 2.03      
16 A 999 988 1.80      
17 A 950 939 0.91      
18 A 905 894 1.28      
19 A 861 851 23.87      
20 A 819 810 0.17      
21 A 749 741 55.59      
22 A 646 638 4.60      
23 A 638 631 0.00      
24 A 591 585 3.74      
25 A 327 324 6.76      
26 A 262 259 5.91      
27 A 118 117 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18264.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 18056.7 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 PBEPBE/6-31+G**
ABC
0.30119 0.11600 0.08509

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.140 0.024 -0.000
H2 -2.535 0.541 -0.890
H3 -2.513 -1.010 -0.000
H4 -2.535 0.541 0.890
C5 1.494 0.581 -0.000
O6 1.391 -0.770 -0.000
N7 0.025 -1.119 0.000
C8 -0.641 0.030 -0.000
C9 0.250 1.153 0.000
H10 -0.000 2.211 0.000
H11 2.508 0.977 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10261.09981.10263.67563.61852.44771.49832.64323.05944.7440
H21.10261.78871.78014.12634.23373.17842.15412.98793.16375.1396
H31.09981.78871.78874.31073.91062.53952.14123.50914.08545.3994
H41.10261.78011.78874.12634.23373.17832.15412.98793.16375.1396
C53.67564.12634.31074.12631.35502.24692.20481.36822.21091.0887
O63.61854.23373.91064.23371.35501.40992.18392.23533.28962.0736
N72.44773.17842.53953.17832.24691.40991.32852.28313.33043.2496
C81.49832.15412.14122.15412.20482.18391.32851.43352.27303.2882
C92.64322.98793.50912.98791.36822.23532.28311.43351.08772.2640
H103.05943.16374.08543.16372.21093.28963.33042.27301.08772.7951
H114.74405.13965.39945.13961.08872.07363.24963.28822.26402.7951

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 119.846 C1 C8 C9 128.711
H2 C1 H3 108.615 H2 C1 H4 107.642
H2 C1 C8 110.913 H3 C1 H4 108.615
H3 C1 C8 110.060 H4 C1 C8 110.913
C5 O6 N7 108.696 C5 C9 C8 103.779
C5 C9 H10 128.017 O6 C5 C9 110.337
O6 C5 H11 115.682 O6 N7 C8 105.745
N7 C8 C9 111.443 C8 C9 H10 128.204
C9 C5 H11 133.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.850      
2 H 0.190      
3 H 0.201      
4 H 0.190      
5 C -0.128      
6 O 0.019      
7 N -0.275      
8 C 0.161      
9 C 0.169      
10 H 0.157      
11 H 0.169      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.611 3.006 -0.000 3.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.545 0.203 -0.000
y 0.203 8.706 0.000
z -0.000 0.000 5.658


<r2> (average value of r2) Å2
<r2> 138.792
(<r2>)1/2 11.781