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

using model chemistry: HF/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-50.186814
Energy at 298.15K-50.193552
Nuclear repulsion energy117.695000
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/CEP-121G*
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 3451 3117 3.89      
2 A 3428 3097 0.64      
3 A 3304 2985 17.89      
4 A 3265 2950 30.14      
5 A 3202 2893 28.08      
6 A 1789 1616 43.21      
7 A 1628 1470 26.37      
8 A 1615 1459 1.68      
9 A 1614 1458 7.09      
10 A 1570 1418 56.86      
11 A 1531 1383 17.72      
12 A 1391 1257 6.52      
13 A 1260 1139 25.76      
14 A 1180 1066 7.32      
15 A 1161 1049 0.82      
16 A 1120 1012 4.49      
17 A 1058 956 51.76      
18 A 1041 940 3.46      
19 A 1021 923 1.46      
20 A 983 888 7.54      
21 A 869 785 64.40      
22 A 715 646 0.81      
23 A 693 626 9.59      
24 A 637 576 8.02      
25 A 353 319 7.14      
26 A 295 266 5.36      
27 A 136 123 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 20154.6 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 18207.7 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/CEP-121G*
ABC
0.31072 0.11800 0.08689

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.111 0.024 0.000
H2 -2.485 0.542 -0.879
H3 -2.489 -0.990 -0.000
H4 -2.485 0.541 0.879
C5 1.506 0.550 0.000
O6 1.384 -0.771 0.000
N7 0.049 -1.098 -0.000
C8 -0.605 0.013 -0.000
C9 0.296 1.140 -0.000
H10 0.059 2.184 -0.000
H11 2.507 0.935 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08601.08281.08613.65503.58452.43471.50612.65313.06174.7071
H21.08601.76591.75784.08684.17943.14402.14172.97763.15345.0844
H31.08281.76591.76584.28173.87912.54062.13443.50634.07075.3543
H41.08611.75781.76584.08674.17913.14392.14172.97783.15385.0843
C53.65504.08684.28174.08671.32752.20002.17831.34562.18231.0726
O63.58454.17943.87914.17911.32751.37412.13802.19903.23902.0429
N72.43473.14402.54063.14392.20001.37411.28942.25163.28253.1899
C81.50612.14172.13442.14172.17832.13801.28941.44302.27073.2459
C92.65312.97763.50632.97781.34562.19902.25161.44301.07112.2204
H103.06173.15344.07073.15382.18233.23903.28252.27071.07112.7483
H114.70715.08445.35435.08431.07262.04293.18993.24592.22042.7483

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 120.941 C1 C8 C9 128.203
H2 C1 H3 109.011 H2 C1 H4 108.046
H2 C1 C8 110.375 H3 C1 H4 109.009
H3 C1 C8 109.979 H4 C1 C8 110.375
C5 O6 N7 109.031 C5 C9 C8 102.678
C5 C9 H10 128.760 O6 C5 C9 110.702
O6 C5 H11 116.284 O6 N7 C8 106.733
N7 C8 C9 110.856 C8 C9 H10 128.562
C9 C5 H11 133.014
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.620      
2 H 0.180      
3 H 0.208      
4 H 0.180      
5 C -0.150      
6 O -0.218      
7 N 0.031      
8 C 0.016      
9 C -0.129      
10 H 0.262      
11 H 0.240      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.605 3.258 0.001 3.314
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.251 2.436 0.000
y 2.436 -36.997 -0.000
z 0.000 -0.000 -36.585
Traceless
 xyz
x 7.540 2.436 0.000
y 2.436 -4.079 -0.000
z 0.000 -0.000 -3.461
Polar
3z2-r2-6.923
x2-y27.746
xy2.436
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.944 -0.145 0.000
y -0.145 7.296 0.000
z 0.000 0.000 4.754


<r2> (average value of r2) Å2
<r2> 111.232
(<r2>)1/2 10.547