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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-283.778949
Energy at 298.15K-283.785365
Nuclear repulsion energy219.617169
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3317 3200 0.32      
2 A 3290 3174 0.15      
3 A 3150 3039 4.13      
4 A 3114 3005 9.56      
5 A 3062 2954 9.10      
6 A 1586 1531 15.53      
7 A 1554 1499 10.59      
8 A 1538 1484 13.86      
9 A 1466 1414 7.09      
10 A 1434 1384 15.42      
11 A 1395 1346 24.87      
12 A 1288 1243 1.52      
13 A 1144 1104 8.23      
14 A 1105 1066 6.80      
15 A 1053 1016 5.98      
16 A 1032 996 9.33      
17 A 982 948 2.80      
18 A 926 893 0.26      
19 A 913 880 1.11      
20 A 826 797 13.76      
21 A 810 782 53.04      
22 A 669 645 0.34      
23 A 644 621 6.62      
24 A 578 557 5.65      
25 A 330 319 6.10      
26 A 269 260 5.22      
27 A 132 127 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18802.4 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 18142.5 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/3-21G
ABC
0.29545 0.11444 0.08379

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.145 0.037 -0.000
H2 -2.520 0.557 -0.888
H3 -2.529 -0.986 -0.000
H4 -2.520 0.557 0.888
C5 1.491 0.612 -0.000
O6 1.436 -0.768 -0.000
N7 -0.001 -1.149 0.000
C8 -0.645 0.012 -0.000
C9 0.242 1.144 0.000
H10 -0.039 2.182 0.000
H11 2.473 1.052 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09551.09241.09553.68113.67102.45001.50082.63123.00654.7287
H21.09551.78051.77684.10794.26573.16892.14522.95953.09595.0955
H31.09241.78051.78054.32573.97152.53322.13253.49484.02955.4015
H41.09551.77681.78054.10794.26573.16892.14522.95953.09595.0955
C53.68114.10794.32574.10791.38092.30762.21791.35762.19171.0767
O63.67104.26573.97154.26571.38091.48712.22262.25453.29812.0946
N72.45003.16892.53323.16892.30761.48711.32742.30553.33083.3114
C81.50082.14522.13252.14522.21792.22261.32741.43742.25263.2867
C92.63122.95953.49482.95951.35762.25452.30551.43741.07512.2335
H103.00653.09594.02953.09592.19173.29813.33082.25261.07512.7543
H114.72875.09555.40155.09551.07672.09463.31143.28672.23352.7543

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 119.932 C1 C8 C9 127.136
H2 C1 H3 108.937 H2 C1 H4 108.371
H2 C1 C8 110.459 H3 C1 H4 108.937
H3 C1 C8 109.639 H4 C1 C8 110.458
C5 O6 N7 107.083 C5 C9 C8 104.995
C5 C9 H10 128.190 O6 C5 C9 110.824
O6 C5 H11 116.377 O6 N7 C8 104.165
N7 C8 C9 112.933 C8 C9 H10 126.815
C9 C5 H11 132.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.604      
2 H 0.220      
3 H 0.231      
4 H 0.220      
5 C 0.161      
6 O -0.360      
7 N -0.252      
8 C 0.283      
9 C -0.331      
10 H 0.195      
11 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.882 3.163 0.000 3.284
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.442 2.601 0.000
y 2.601 -36.364 0.000
z 0.000 0.000 -36.340
Traceless
 xyz
x 6.911 2.601 0.000
y 2.601 -3.473 0.000
z 0.000 0.000 -3.437
Polar
3z2-r2-6.875
x2-y26.923
xy2.601
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.753 0.157 0.000
y 0.157 6.690 0.000
z 0.000 0.000 3.164


<r2> (average value of r2) Å2
<r2> 139.874
(<r2>)1/2 11.827