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

using model chemistry: LSDA/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 LSDA/6-31+G**
 hartrees
Energy at 0K-283.843232
Energy at 298.15K-283.849521
Nuclear repulsion energy224.612151
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/6-31+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 3221 3173 1.20      
2 A 3186 3139 0.23      
3 A 3103 3056 1.86      
4 A 3062 3016 1.22      
5 A 2991 2946 7.57      
6 A 1632 1608 45.35      
7 A 1514 1491 41.02      
8 A 1424 1402 9.44      
9 A 1404 1383 13.33      
10 A 1354 1334 0.65      
11 A 1352 1332 12.71      
12 A 1268 1249 18.71      
13 A 1179 1161 14.09      
14 A 1031 1015 1.52      
15 A 1012 996 4.83      
16 A 1007 992 9.11      
17 A 992 977 13.63      
18 A 932 918 1.00      
19 A 906 892 12.95      
20 A 864 851 6.58      
21 A 766 755 45.60      
22 A 665 655 0.11      
23 A 642 633 2.47      
24 A 633 624 0.12      
25 A 328 323 2.63      
26 A 246 242 2.78      
27 A 85 84 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 18398.1 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 18122.1 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/6-31+G**
ABC
0.30943 0.12021 0.08802

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.088 0.017 0.000
H2 2.451 -0.527 -0.889
H3 2.536 1.022 -0.000
H4 2.451 -0.526 0.890
C5 0.622 0.114 -0.000
O6 -0.060 -1.045 0.000
N7 -1.416 -0.796 -0.000
C8 -1.524 0.513 -0.000
H9 -2.523 0.956 -0.000
C10 -0.266 1.152 -0.000
H11 -0.043 2.218 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10361.09991.10361.46962.39693.59733.64684.70562.61373.0641
H21.10361.78731.77862.13262.71443.97724.20475.26593.31563.8142
H31.09991.78731.78732.11833.31854.34984.09235.05912.80512.8434
H41.10361.77861.78732.13272.71483.97754.20475.26583.31543.8137
C51.46962.13262.11832.13271.34502.23182.18323.25531.36592.2063
O62.39692.71443.31852.71481.34501.37822.13793.17272.20663.2627
N73.59733.97724.34983.97752.23181.37821.31332.07202.26193.3113
C83.64684.20474.09234.20472.18322.13791.31331.09201.41152.2582
H94.70565.26595.05915.26583.25533.17272.07201.09202.26522.7817
C102.61373.31562.80513.31541.36592.20662.26191.41152.26521.0886
H113.06413.81422.84343.81372.20633.26273.31132.25822.78171.0886

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 116.693 C1 C5 C10 134.340
H2 C1 H3 108.415 H2 C1 H4 107.375
H2 C1 C5 111.150 H3 C1 H4 108.414
H3 C1 C5 110.224 H4 C1 C5 111.151
C5 O6 N7 110.070 C5 C10 C8 103.628
C5 C10 H11 127.663 O6 C5 C10 108.966
O6 N7 C8 105.162 N7 C8 H9 118.674
N7 C8 C10 112.174 C8 C10 H11 128.709
H9 C8 C10 129.153
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.756      
2 H 0.219      
3 H 0.201      
4 H 0.219      
5 C -0.018      
6 O 0.001      
7 N -0.259      
8 C -0.227      
9 H 0.183      
10 C 0.264      
11 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.157 2.680 0.000 3.440
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.683 -3.813 0.000
y -3.813 -36.031 -0.000
z 0.000 -0.000 -36.664
Traceless
 xyz
x 4.664 -3.813 0.000
y -3.813 -1.857 -0.000
z 0.000 -0.000 -2.807
Polar
3z2-r2-5.615
x2-y24.348
xy-3.813
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.650 -0.253 0.000
y -0.253 8.439 -0.000
z 0.000 -0.000 5.609


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