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

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-283.686521
Energy at 298.15K-283.692893
HF Energy-283.686521
Nuclear repulsion energy221.230263
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 wB97X-D/3-21G*
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 3348 3173 1.27      
2 A 3309 3136 1.27      
3 A 3196 3029 3.68      
4 A 3161 2996 3.48      
5 A 3099 2937 4.61      
6 A 1653 1567 37.69      
7 A 1552 1471 19.81      
8 A 1544 1463 12.01      
9 A 1485 1407 35.15      
10 A 1480 1403 0.29      
11 A 1374 1302 8.58      
12 A 1256 1190 22.90      
13 A 1234 1170 12.72      
14 A 1127 1068 13.62      
15 A 1075 1019 7.26      
16 A 1057 1002 2.33      
17 A 986 934 5.72      
18 A 956 906 0.85      
19 A 950 901 4.96      
20 A 875 830 10.48      
21 A 865 820 57.09      
22 A 671 636 0.87      
23 A 662 628 0.49      
24 A 624 591 1.85      
25 A 329 312 2.74      
26 A 250 237 4.27      
27 A 70 66 1.09      

Unscaled Zero Point Vibrational Energy (zpe) 19092.9 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 18096.3 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 wB97X-D/3-21G*
ABC
0.30296 0.11613 0.08529

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.123 0.014 0.000
H2 2.470 -0.528 -0.886
H3 2.563 1.013 -0.000
H4 2.470 -0.527 0.886
C5 0.639 0.103 -0.000
O6 -0.072 -1.072 0.000
N7 -1.479 -0.779 -0.000
C8 -1.534 0.546 0.000
H9 -2.496 1.028 0.000
C10 -0.240 1.146 -0.000
H11 -0.003 2.192 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09431.09211.09431.48762.44933.68893.69624.72942.62093.0443
H21.09431.77951.77172.13012.74674.05544.23945.27893.30633.7812
H31.09211.77951.77952.12883.36044.42194.12385.05892.80642.8238
H41.09431.77171.77952.13012.74704.05564.23935.27883.30613.7808
C51.48762.13012.12882.13011.37342.29442.21743.26801.36362.1852
O62.44932.74673.36042.74701.37341.43722.18063.20702.22423.2648
N73.68894.05544.42194.05562.29441.43721.32632.07372.28953.3180
C83.69624.23944.12384.23932.21742.18061.32631.07581.42632.2483
H94.72945.27895.05895.27883.26803.20702.07371.07582.25872.7512
C102.62093.30632.80643.30611.36362.22422.28951.42632.25871.0728
H113.04433.78122.82383.78082.18523.26483.31802.24832.75121.0728

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 117.706 C1 C5 C10 133.583
H2 C1 H3 108.955 H2 C1 H4 108.102
H2 C1 C5 110.251 H3 C1 H4 108.955
H3 C1 C5 110.277 H4 C1 C5 110.252
C5 O6 N7 109.414 C5 C10 C8 105.248
C5 C10 H11 127.096 O6 C5 C10 108.711
O6 N7 C8 104.123 N7 C8 H9 119.009
N7 C8 C10 112.505 C8 C10 H11 127.657
H9 C8 C10 128.486
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.680      
2 H 0.259      
3 H 0.238      
4 H 0.259      
5 C 0.390      
6 O -0.398      
7 N -0.222      
8 C 0.042      
9 H 0.268      
10 C -0.384      
11 H 0.230      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.975 2.923 -0.001 3.527
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.411 -3.898 0.002
y -3.898 -35.610 0.001
z 0.002 0.001 -36.300
Traceless
 xyz
x 5.544 -3.898 0.002
y -3.898 -2.255 0.001
z 0.002 0.001 -3.289
Polar
3z2-r2-6.578
x2-y25.199
xy-3.898
xz0.002
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.653 -0.457 0.000
y -0.457 6.645 -0.001
z 0.000 -0.001 3.151


<r2> (average value of r2) Å2
<r2> 137.958
(<r2>)1/2 11.746