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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-285.366784
Energy at 298.15K-285.373165
Nuclear repulsion energy223.454121
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/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 3288 3159 0.27      
2 A 3249 3122 4.19      
3 A 3151 3028 8.43      
4 A 3114 2992 8.80      
5 A 3054 2935 13.71      
6 A 1652 1588 33.45      
7 A 1530 1470 42.97      
8 A 1501 1442 8.56      
9 A 1488 1429 6.98      
10 A 1426 1370 1.12      
11 A 1381 1327 6.84      
12 A 1268 1218 22.18      
13 A 1221 1173 8.21      
14 A 1070 1028 4.08      
15 A 1061 1019 3.42      
16 A 1028 987 8.85      
17 A 1005 966 1.29      
18 A 941 904 9.04      
19 A 907 871 3.71      
20 A 900 865 16.30      
21 A 804 772 29.48      
22 A 661 635 0.40      
23 A 649 624 2.69      
24 A 638 613 1.03      
25 A 334 321 2.12      
26 A 250 240 1.80      
27 A 96 92 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 18833.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 18095.0 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/6-31G**
ABC
0.30817 0.11831 0.08688

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.108 0.015 0.000
H2 2.465 -0.526 -0.883
H3 2.551 1.013 -0.001
H4 2.465 -0.524 0.884
C5 0.622 0.111 -0.000
O6 -0.063 -1.053 -0.000
N7 -1.440 -0.789 0.000
C8 -1.530 0.520 0.000
H9 -2.513 0.975 0.000
C10 -0.258 1.154 -0.000
H11 -0.034 2.209 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09491.09161.09491.48942.42013.63823.67344.71972.62583.0666
H21.09491.77551.76672.14012.72894.01194.22295.27323.31853.8084
H31.09161.77551.77552.12933.33204.37864.11065.06352.81202.8481
H41.09491.76671.77552.14012.72984.01224.22265.27273.31783.8071
C51.48942.14012.12932.14011.35102.24972.19073.25161.36442.1985
O62.42012.72893.33202.72981.35101.40212.15143.18062.21603.2629
N73.63824.01194.37864.01222.24971.40211.31212.06462.27433.3115
C83.67344.22294.11064.22262.19072.15141.31211.08271.42162.2567
H94.71975.27325.06355.27273.25163.18062.06461.08272.26202.7690
C102.62583.31852.81203.31781.36442.21602.27431.42162.26201.0789
H113.06663.80842.84813.80712.19853.26293.31152.25672.76901.0789

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 116.778 C1 C5 C10 133.835
H2 C1 H3 108.592 H2 C1 H4 107.566
H2 C1 C5 110.892 H3 C1 H4 108.594
H3 C1 C5 110.220 H4 C1 C5 110.888
C5 O6 N7 109.590 C5 C10 C8 103.666
C5 C10 H11 127.883 O6 C5 C10 109.387
O6 N7 C8 104.824 N7 C8 H9 118.802
N7 C8 C10 112.533 C8 C10 H11 128.451
H9 C8 C10 128.665
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.378      
2 H 0.145      
3 H 0.129      
4 H 0.145      
5 C 0.382      
6 O -0.364      
7 N -0.172      
8 C 0.109      
9 H 0.119      
10 C -0.215      
11 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.914 2.572 0.000 3.206
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.048 -3.539 0.000
y -3.539 -35.228 0.000
z 0.000 0.000 -35.530
Traceless
 xyz
x 4.331 -3.539 0.000
y -3.539 -1.940 0.000
z 0.000 0.000 -2.392
Polar
3z2-r2-4.783
x2-y24.181
xy-3.539
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.397 -0.411 0.000
y -0.411 7.244 -0.002
z 0.000 -0.002 3.904


<r2> (average value of r2) Å2
<r2> 136.043
(<r2>)1/2 11.664