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

using model chemistry: HF/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-283.538385
Energy at 298.15K-283.545103
Nuclear repulsion energy223.207328
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/LANL2DZ
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 3508 3157 0.29      
2 A 3487 3138 4.16      
3 A 3331 2998 22.18      
4 A 3305 2974 17.84      
5 A 3223 2900 23.21      
6 A 1780 1602 52.44      
7 A 1663 1497 57.56      
8 A 1637 1473 19.62      
9 A 1628 1465 12.52      
10 A 1581 1422 1.34      
11 A 1472 1325 9.16      
12 A 1355 1220 32.99      
13 A 1316 1184 31.83      
14 A 1204 1083 7.77      
15 A 1134 1021 5.67      
16 A 1132 1019 6.22      
17 A 1055 950 11.73      
18 A 1053 947 1.67      
19 A 1023 921 9.37      
20 A 965 868 34.65      
21 A 930 837 69.59      
22 A 711 640 1.47      
23 A 700 630 0.93      
24 A 672 604 1.24      
25 A 353 318 4.43      
26 A 274 247 5.24      
27 A 126 114 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 20308.7 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 18275.8 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/LANL2DZ
ABC
0.31090 0.11709 0.08640

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.119 0.011 -0.000
H2 -2.458 -0.529 0.875
H3 -2.566 0.994 -0.001
H4 -2.458 -0.530 -0.875
C5 -0.632 0.114 0.000
O6 0.070 -1.053 0.000
N7 1.454 -0.779 0.000
C8 1.540 0.521 -0.000
H9 2.501 0.984 -0.000
C10 0.245 1.149 0.000
H11 0.032 2.191 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08271.08041.08271.49012.43333.65913.69444.72072.62373.0620
H21.08271.76011.75022.12432.72594.01664.22545.25743.29963.7893
H31.08041.76011.76012.12463.33734.39394.13345.06662.81572.8599
H41.08271.75021.76012.12422.72534.01614.22535.25743.29983.7898
C51.49012.12432.12462.12421.36182.26962.21033.25131.35662.1802
O62.43332.72593.33732.72531.36181.41102.15413.17122.20833.2439
N73.65914.01664.39394.01612.26961.41101.30362.05042.27543.2933
C83.69444.22544.13344.22532.21032.15411.30361.06591.43872.2503
H94.72075.25745.06665.25743.25133.17122.05041.06592.26122.7484
C102.62373.29962.81573.29981.35662.20832.27541.43872.26121.0640
H113.06203.78932.85993.78982.18023.24393.29332.25032.74841.0640

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 117.053 C1 C5 C10 134.291
H2 C1 H3 108.917 H2 C1 H4 107.853
H2 C1 C5 110.308 H3 C1 H4 108.919
H3 C1 C5 110.481 H4 C1 C5 110.302
C5 O6 N7 109.858 C5 C10 C8 104.468
C5 C10 H11 128.086 O6 C5 C10 108.655
O6 N7 C8 104.966 N7 C8 H9 119.507
N7 C8 C10 112.053 C8 C10 H11 127.446
H9 C8 C10 128.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.605      
2 H 0.218      
3 H 0.197      
4 H 0.218      
5 C 0.474      
6 O -0.400      
7 N -0.003      
8 C -0.150      
9 H 0.249      
10 C -0.446      
11 H 0.248      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.027 3.619 0.000 4.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.386 4.609 -0.000
y 4.609 -37.865 0.000
z -0.000 0.000 -37.116
Traceless
 xyz
x 6.105 4.609 -0.000
y 4.609 -3.614 0.000
z -0.000 0.000 -2.491
Polar
3z2-r2-4.982
x2-y26.479
xy4.609
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.426 0.518 -0.000
y 0.518 7.092 0.000
z -0.000 0.000 3.893


<r2> (average value of r2) Å2
<r2> 137.423
(<r2>)1/2 11.723