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All results from a given calculation for C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-283.724929
Energy at 298.15K-283.731187
Nuclear repulsion energy221.746584
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 LSDA/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 3255 3189 1.13      
2 A 3226 3161 0.51      
3 A 3115 3052 2.73      
4 A 3074 3011 2.67      
5 A 2999 2938 5.70      
6 A 1639 1606 47.03      
7 A 1485 1455 26.72      
8 A 1464 1435 14.09      
9 A 1452 1422 16.11      
10 A 1404 1375 8.02      
11 A 1341 1314 7.68      
12 A 1255 1230 12.68      
13 A 1201 1176 20.51      
14 A 1062 1040 11.56      
15 A 1053 1031 5.44      
16 A 1008 988 8.01      
17 A 961 942 1.15      
18 A 926 907 6.28      
19 A 895 877 4.94      
20 A 806 789 44.49      
21 A 801 785 9.14      
22 A 665 652 0.24      
23 A 642 629 0.41      
24 A 622 609 2.02      
25 A 326 319 3.14      
26 A 248 243 3.44      
27 A 73 71 1.38      

Unscaled Zero Point Vibrational Energy (zpe) 18497.7 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 18122.2 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 LSDA/6-31G
ABC
0.30281 0.11730 0.08592

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.104 0.018 0.000
H2 2.469 -0.528 -0.888
H3 2.555 1.022 -0.000
H4 2.469 -0.527 0.888
C5 0.640 0.113 -0.000
O6 -0.056 -1.074 0.000
N7 -1.470 -0.789 -0.000
C8 -1.529 0.538 0.000
H9 -2.508 1.012 -0.000
C10 -0.252 1.151 -0.000
H11 -0.025 2.214 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10431.10051.10431.46722.41983.66393.66934.71802.61433.0585
H21.10431.78781.77622.13202.73154.04654.23145.28523.31853.8113
H31.10051.78781.78782.11993.34754.41354.11195.06322.80982.8421
H41.10431.77621.78782.13202.73194.04674.23135.28513.31833.8108
C51.46722.13202.11992.13201.37522.29442.20943.27391.36892.2036
O62.41982.73153.34752.73191.37521.44272.18283.21922.23373.2874
N73.66394.04654.41354.04672.29441.44271.32772.07842.29103.3321
C83.66934.23144.11194.23132.20942.18281.32771.08851.41652.2514
H94.71805.28525.06325.28513.27393.21922.07841.08852.26072.7587
C102.61433.31852.80983.31831.36892.23372.29101.41652.26071.0861
H113.05853.81132.84213.81082.20363.28743.33212.25142.75871.0861

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 116.675 C1 C5 C10 134.350
H2 C1 H3 108.355 H2 C1 H4 107.064
H2 C1 C5 111.224 H3 C1 H4 108.354
H3 C1 C5 110.486 H4 C1 C5 111.225
C5 O6 N7 108.999 C5 C10 C8 104.961
C5 C10 H11 127.308 O6 C5 C10 108.975
O6 N7 C8 103.900 N7 C8 H9 118.341
N7 C8 C10 113.164 C8 C10 H11 127.731
H9 C8 C10 128.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.562      
2 H 0.215      
3 H 0.195      
4 H 0.215      
5 C 0.257      
6 O -0.372      
7 N -0.122      
8 C -0.067      
9 H 0.205      
10 C -0.142      
11 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.137 3.030 0.000 3.708
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.811 -3.940 0.000
y -3.940 -35.981 -0.000
z 0.000 -0.000 -36.012
Traceless
 xyz
x 5.185 -3.940 0.000
y -3.940 -2.570 -0.000
z 0.000 -0.000 -2.615
Polar
3z2-r2-5.231
x2-y25.170
xy-3.940
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.625 -0.379 0.000
y -0.379 7.262 -0.000
z 0.000 -0.000 3.685


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000