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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-285.359308
Energy at 298.15K-285.365688
Nuclear repulsion energy223.398697
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 B3LYPultrafine/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 3291 3153 0.36      
2 A 3256 3120 4.98      
3 A 3151 3018 9.30      
4 A 3114 2983 9.36      
5 A 3058 2930 14.27      
6 A 1654 1585 32.54      
7 A 1531 1467 40.82      
8 A 1517 1453 10.86      
9 A 1504 1441 7.35      
10 A 1442 1381 1.25      
11 A 1385 1326 6.47      
12 A 1270 1216 22.32      
13 A 1224 1173 8.18      
14 A 1081 1036 4.10      
15 A 1064 1019 3.31      
16 A 1033 989 8.07      
17 A 1007 965 1.97      
18 A 941 902 8.97      
19 A 904 866 3.84      
20 A 904 866 16.73      
21 A 802 769 30.24      
22 A 661 634 0.42      
23 A 649 622 2.80      
24 A 639 612 1.03      
25 A 333 319 2.06      
26 A 250 240 1.78      
27 A 103 99 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 18883.4 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 18090.3 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 B3LYPultrafine/6-31G*
ABC
0.30808 0.11823 0.08683

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.109 0.015 0.000
H2 2.467 -0.525 -0.884
H3 2.552 1.014 -0.000
H4 2.467 -0.524 0.884
C5 0.622 0.111 -0.000
O6 -0.064 -1.054 -0.000
N7 -1.440 -0.789 -0.000
C8 -1.531 0.520 0.000
H9 -2.513 0.975 0.000
C10 -0.258 1.154 -0.000
H11 -0.035 2.210 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09601.09281.09601.49002.42183.63913.67454.72122.62673.0683
H21.09601.77671.76802.14262.73304.01494.22595.27653.32083.8109
H31.09281.77671.77672.13043.33454.38014.11195.06532.81312.8495
H41.09601.76801.77672.14262.73344.01524.22585.27643.32053.8105
C51.49002.14262.13042.14261.35202.25012.19123.25261.36452.1994
O62.42182.73303.33452.73341.35201.40132.15143.18072.21603.2640
N73.63914.01494.38014.01522.25011.40131.31232.06502.27403.3119
C83.67454.22594.11194.22582.19122.15141.31231.08311.42142.2567
H94.72125.27655.06535.27643.25263.18072.06501.08312.26252.7692
C102.62673.32082.81313.32051.36452.21602.27401.42142.26251.0797
H113.06833.81092.84953.81052.19943.26403.31192.25672.76921.0797

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 116.806 C1 C5 C10 133.866
H2 C1 H3 108.530 H2 C1 H4 107.524
H2 C1 C5 110.983 H3 C1 H4 108.529
H3 C1 C5 110.194 H4 C1 C5 110.984
C5 O6 N7 109.603 C5 C10 C8 103.708
C5 C10 H11 127.899 O6 C5 C10 109.327
O6 N7 C8 104.849 N7 C8 H9 118.786
N7 C8 C10 112.512 C8 C10 H11 128.393
H9 C8 C10 128.702
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.524      
2 H 0.185      
3 H 0.172      
4 H 0.185      
5 C 0.413      
6 O -0.363      
7 N -0.164      
8 C 0.054      
9 H 0.163      
10 C -0.269      
11 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.897 2.583 0.000 3.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.114 -3.537 -0.000
y -3.537 -35.202 -0.000
z -0.000 -0.000 -35.549
Traceless
 xyz
x 4.262 -3.537 -0.000
y -3.537 -1.871 -0.000
z -0.000 -0.000 -2.391
Polar
3z2-r2-4.782
x2-y24.088
xy-3.537
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.326 -0.406 0.000
y -0.406 7.197 0.000
z 0.000 0.000 3.854


<r2> (average value of r2) Å2
<r2> 136.135
(<r2>)1/2 11.668