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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-285.301999
Energy at 298.15K-285.308489
Nuclear repulsion energy223.983613
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 mPW1PW91/6-31+G**
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 3323 3163 0.12      
2 A 3302 3143 0.02      
3 A 3186 3032 4.52      
4 A 3151 2999 8.08      
5 A 3079 2931 15.02      
6 A 1648 1569 31.59      
7 A 1522 1449 5.14      
8 A 1503 1431 23.97      
9 A 1491 1419 10.44      
10 A 1466 1395 41.76      
11 A 1416 1347 1.21      
12 A 1310 1247 1.92      
13 A 1183 1126 18.08      
14 A 1097 1044 9.76      
15 A 1067 1015 2.26      
16 A 1044 994 2.38      
17 A 988 940 5.84      
18 A 974 927 14.52      
19 A 925 880 15.10      
20 A 886 844 0.71      
21 A 792 754 57.21      
22 A 671 639 4.88      
23 A 669 637 0.00      
24 A 617 588 4.68      
25 A 339 323 7.13      
26 A 275 262 5.93      
27 A 125 119 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 19024.5 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 18107.5 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 mPW1PW91/6-31+G**
ABC
0.30792 0.11817 0.08678

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.124 0.024 0.000
H2 2.514 0.537 0.883
H3 2.494 -1.001 -0.000
H4 2.514 0.538 -0.883
C5 -1.482 0.569 -0.000
O6 -1.369 -0.763 0.000
N7 -0.030 -1.103 -0.000
C8 0.634 0.028 -0.000
C9 -0.254 1.144 -0.000
H10 -0.010 2.195 -0.000
H11 -2.488 0.959 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09311.09031.09313.64723.58102.43121.49042.62913.04384.7065
H21.09311.77441.76614.09244.18903.15272.13852.96843.14595.0971
H31.09031.77441.77444.27483.87022.52572.12603.48674.06005.3541
H41.09311.76611.77444.09244.18913.15292.13852.96823.14555.0971
C53.64724.09244.27484.09241.33732.21452.18391.35582.19311.0793
O63.58104.18903.87024.18911.33731.38152.15362.20963.25532.0542
N72.43123.15272.52573.15292.21451.38151.31142.25843.29753.2087
C81.49042.13852.12602.13852.18392.15361.31141.42642.26003.2581
C92.62912.96843.48672.96821.35582.20962.25841.42641.07832.2419
H103.04383.14594.06003.14552.19313.25533.29752.26001.07832.7695
H114.70655.09715.35415.09711.07932.05423.20873.25812.24192.7695

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 120.256 C1 C8 C9 128.661
H2 C1 H3 108.714 H2 C1 H4 107.775
H2 C1 C8 110.801 H3 C1 H4 108.714
H3 C1 C8 109.964 H4 C1 C8 110.802
C5 O6 N7 109.071 C5 C9 C8 103.402
C5 C9 H10 128.209 O6 C5 C9 110.259
O6 C5 H11 116.025 O6 N7 C8 106.185
N7 C8 C9 111.083 C8 C9 H10 128.389
C9 C5 H11 133.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.752      
2 H 0.187      
3 H 0.200      
4 H 0.187      
5 C -0.083      
6 O 0.001      
7 N -0.284      
8 C 0.084      
9 C 0.099      
10 H 0.178      
11 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.578 3.094 0.000 3.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.418 -2.048 0.000
y -2.048 -36.737 -0.000
z 0.000 -0.000 -36.500
Traceless
 xyz
x 7.200 -2.048 0.000
y -2.048 -3.778 -0.000
z 0.000 -0.000 -3.422
Polar
3z2-r2-6.843
x2-y27.319
xy-2.048
xz0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 136.335
(<r2>)1/2 11.676