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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-283.495996
Energy at 298.15K-283.502750
Nuclear repulsion energy224.030703
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 HF/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 3489 3150 0.28      
2 A 3467 3130 3.13      
3 A 3303 2982 12.79      
4 A 3277 2959 9.05      
5 A 3209 2898 12.78      
6 A 1799 1624 47.38      
7 A 1682 1518 54.87      
8 A 1641 1481 14.95      
9 A 1632 1474 9.79      
10 A 1590 1435 1.05      
11 A 1487 1343 8.23      
12 A 1366 1233 28.87      
13 A 1324 1195 22.18      
14 A 1213 1095 10.51      
15 A 1140 1029 7.35      
16 A 1139 1028 4.52      
17 A 1078 973 1.23      
18 A 1064 961 12.37      
19 A 1028 928 8.37      
20 A 950 858 62.07      
21 A 922 832 29.42      
22 A 719 650 2.57      
23 A 705 637 0.93      
24 A 681 615 1.01      
25 A 357 322 4.14      
26 A 277 250 4.22      
27 A 127 115 1.54      

Unscaled Zero Point Vibrational Energy (zpe) 20332.5 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 18358.2 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 HF/6-31G
ABC
0.31396 0.11790 0.08708

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.109 0.012 -0.000
H2 -2.451 -0.528 0.875
H3 -2.557 0.995 -0.001
H4 -2.451 -0.529 -0.874
C5 -0.630 0.112 -0.000
O6 0.068 -1.050 0.000
N7 1.455 -0.772 0.000
C8 1.531 0.520 -0.000
H9 2.489 0.988 -0.000
C10 0.243 1.140 0.000
H11 0.029 2.183 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08291.08041.08291.48272.42253.64963.67604.70072.60893.0476
H21.08291.75951.74902.11892.71734.01024.20975.24073.28683.7767
H31.08041.75951.75952.11963.32754.38384.11575.04552.80332.8458
H41.08291.74901.75952.11892.71694.01004.20975.24083.28713.7773
C51.48272.11892.11962.11891.35532.26462.19963.23971.34902.1737
O62.42252.71733.32752.71691.35531.41452.14623.16482.19723.2333
N73.64964.01024.38384.01002.26461.41451.29422.04172.26423.2811
C83.67604.20974.11574.20972.19962.14621.29421.06591.43012.2410
H94.70075.24075.04555.24083.23973.16482.04171.06592.25112.7342
C102.60893.28682.80333.28711.34902.19722.26421.43012.25111.0644
H113.04763.77672.84583.77732.17373.23333.28112.24102.73421.0644

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 117.136 C1 C5 C10 134.182
H2 C1 H3 108.847 H2 C1 H4 107.708
H2 C1 C5 110.385 H3 C1 H4 108.849
H3 C1 C5 110.598 H4 C1 C5 110.383
C5 O6 N7 109.670 C5 C10 C8 104.610
C5 C10 H11 128.110 O6 C5 C10 108.681
O6 N7 C8 104.713 N7 C8 H9 119.467
N7 C8 C10 112.325 C8 C10 H11 127.280
H9 C8 C10 128.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.470 -0.610    
2 H 0.206 0.170    
3 H 0.183 0.181    
4 H 0.206 0.170    
5 C 0.423 0.702    
6 O -0.595 -0.274    
7 N -0.117 -0.461    
8 C 0.027 0.515    
9 H 0.250 0.040    
10 C -0.349 -0.632    
11 H 0.235 0.200    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.990 3.629 0.000 4.139
CHELPG -1.937 3.545 -0.000 4.039
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.993 4.478 -0.000
y 4.478 -37.493 0.000
z -0.000 0.000 -36.636
Traceless
 xyz
x 6.072 4.478 -0.000
y 4.478 -3.679 0.000
z -0.000 0.000 -2.394
Polar
3z2-r2-4.787
x2-y26.500
xy4.478
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.427 0.530 -0.000
y 0.530 6.952 0.000
z -0.000 0.000 3.477


<r2> (average value of r2) Å2
<r2> 136.303
(<r2>)1/2 11.675