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

using model chemistry: B3LYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-285.464060
Energy at 298.15K-285.470498
Nuclear repulsion energy224.209165
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 B3LYP/cc-pVTZ
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 3268 3159 0.35      
2 A 3228 3121 3.16      
3 A 3127 3023 8.19      
4 A 3088 2985 7.48      
5 A 3039 2937 12.98      
6 A 1637 1582 37.02      
7 A 1516 1465 46.67      
8 A 1490 1440 11.12      
9 A 1477 1428 7.43      
10 A 1419 1371 0.45      
11 A 1372 1326 6.94      
12 A 1257 1215 24.59      
13 A 1214 1174 8.07      
14 A 1070 1034 2.81      
15 A 1053 1018 4.72      
16 A 1026 992 7.75      
17 A 1000 967 2.09      
18 A 941 909 10.82      
19 A 917 886 4.14      
20 A 887 857 15.56      
21 A 806 780 38.20      
22 A 661 639 0.25      
23 A 656 634 1.26      
24 A 644 623 2.16      
25 A 337 326 2.12      
26 A 252 244 2.15      
27 A 106 102 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 18743.7 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 18117.7 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 B3LYP/cc-pVTZ
ABC
0.31084 0.11898 0.08744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.102 0.016 -0.000
H2 2.457 -0.523 -0.880
H3 2.541 1.011 -0.001
H4 2.457 -0.521 0.881
C5 0.620 0.108 -0.000
O6 -0.063 -1.051 0.000
N7 -1.437 -0.782 -0.000
C8 -1.526 0.519 0.000
H9 -2.505 0.974 0.000
C10 -0.255 1.148 -0.000
H11 -0.029 2.199 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09111.08771.09111.48452.41393.62813.66264.70482.61443.0505
H21.09111.76981.76102.13202.72124.00074.20995.25633.30423.7896
H31.08771.76981.76982.12243.32214.36404.09685.04582.79932.8315
H41.09111.76101.76982.13192.72154.00104.20955.25573.30353.7884
C51.48452.13202.12242.13191.34632.24212.18523.24231.35862.1888
O62.41392.72123.32212.72151.34631.40022.14643.17182.20753.2502
N73.62814.00074.36404.00102.24211.40021.30472.05472.26353.2968
C83.66264.20994.09684.20952.18522.14641.30471.07881.41802.2495
H94.70485.25635.04585.25573.24233.17182.05471.07882.25642.7618
C102.61443.30422.79933.30351.35862.20752.26351.41802.25641.0748
H113.05053.78962.83153.78842.18883.25023.29682.24952.76181.0748

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 116.938 C1 C5 C10 133.668
H2 C1 H3 108.637 H2 C1 H4 107.603
H2 C1 C5 110.820 H3 C1 H4 108.640
H3 C1 C5 110.248 H4 C1 C5 110.807
C5 O6 N7 109.430 C5 C10 C8 103.790
C5 C10 H11 127.789 O6 C5 C10 109.394
O6 N7 C8 104.977 N7 C8 H9 118.798
N7 C8 C10 112.409 C8 C10 H11 128.421
H9 C8 C10 128.793
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287     -0.629
2 H 0.116     0.176
3 H 0.106     0.187
4 H 0.116     0.176
5 C 0.205     0.543
6 O -0.126     -0.092
7 N -0.076     -0.402
8 C -0.069     0.295
9 H 0.124     0.090
10 C -0.238     -0.550
11 H 0.129     0.206


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.931 2.559 0.000 3.206
CHELPG        
AIM        
ESP 1.910 2.535 0.001 3.175


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.673 -3.632 -0.001
y -3.632 -35.762 0.000
z -0.001 0.000 -36.182
Traceless
 xyz
x 4.299 -3.632 -0.001
y -3.632 -1.835 0.000
z -0.001 0.000 -2.465
Polar
3z2-r2-4.929
x2-y24.089
xy-3.632
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.276 -0.384 -0.003
y -0.384 7.954 0.002
z -0.003 0.002 5.099


<r2> (average value of r2) Å2
<r2> 135.666
(<r2>)1/2 11.648