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

using model chemistry: LSDA/STO-3G

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/STO-3G
 hartrees
Energy at 0K-280.194029
Energy at 298.15K-280.199914
Nuclear repulsion energy218.832773
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/STO-3G
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 3507 3141 32.05      
2 A 3471 3108 3.33      
3 A 3469 3106 15.92      
4 A 3436 3077 2.38      
5 A 3289 2945 1.61      
6 A 1707 1529 22.60      
7 A 1615 1446 14.31      
8 A 1607 1439 9.85      
9 A 1521 1362 14.05      
10 A 1508 1351 2.04      
11 A 1402 1255 8.61      
12 A 1330 1191 7.40      
13 A 1221 1093 6.28      
14 A 1115 998 9.25      
15 A 1090 977 0.10      
16 A 1068 956 11.25      
17 A 1033 925 0.33      
18 A 996 892 0.37      
19 A 923 827 3.32      
20 A 894 800 0.26      
21 A 817 732 25.23      
22 A 670 600 0.51      
23 A 636 569 0.57      
24 A 600 537 1.78      
25 A 318 285 0.92      
26 A 247 222 1.08      
27 A 42 38 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 19764.9 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 17699.5 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/STO-3G
ABC
0.29082 0.11481 0.08363

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.139 0.016 0.000
H2 2.503 -0.521 -0.893
H3 2.562 1.032 -0.001
H4 2.503 -0.520 0.893
C5 0.637 0.107 0.000
O6 -0.075 -1.102 0.000
N7 -1.486 -0.803 -0.000
C8 -1.537 0.569 -0.000
H9 -2.516 1.066 -0.000
C10 -0.247 1.166 -0.000
H11 -0.004 2.232 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10371.10031.10371.50402.47983.71563.71694.77172.64843.0819
H21.10371.79181.78612.16122.78904.09664.27835.33903.34743.8285
H31.10031.79181.79182.13553.39204.44414.12535.07862.81262.8327
H41.10371.78611.79182.16122.78954.09694.27825.33893.34713.8279
C51.50402.16122.13552.16121.40282.30972.22293.29621.37992.2194
O62.47982.78903.39202.78951.40281.44172.21963.26442.27403.3339
N73.71564.09664.44414.09692.30971.44171.37262.13412.32603.3771
C83.71694.27834.12534.27822.22292.21961.37261.09811.42142.2619
H94.77175.33905.07865.33893.29623.26442.13411.09812.27132.7698
C102.64843.34742.81263.34711.37992.27402.32601.42142.27131.0931
H113.08193.82852.83273.82792.21943.33393.37712.26192.76981.0931

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 117.068 C1 C5 C10 133.325
H2 C1 H3 108.773 H2 C1 H4 108.018
H2 C1 C5 111.016 H3 C1 H4 108.772
H3 C1 C5 109.187 H4 C1 C5 111.017
C5 O6 N7 108.574 C5 C10 C8 105.021
C5 C10 H11 127.264 O6 C5 C10 109.607
O6 N7 C8 104.100 N7 C8 H9 119.061
N7 C8 C10 112.698 C8 C10 H11 127.715
H9 C8 C10 128.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.288      
2 H 0.119      
3 H 0.119      
4 H 0.119      
5 C 0.070      
6 O -0.039      
7 N -0.124      
8 C -0.063      
9 H 0.121      
10 C -0.148      
11 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.902 1.877 0.000 2.672
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.825 -2.932 0.000
y -2.932 -32.484 0.000
z 0.000 0.000 -32.594
Traceless
 xyz
x 2.714 -2.932 0.000
y -2.932 -1.274 0.000
z 0.000 0.000 -1.440
Polar
3z2-r2-2.880
x2-y22.659
xy-2.932
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.201 -0.291 0.000
y -0.291 4.382 0.000
z 0.000 0.000 1.583


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