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

using model chemistry: LSDA/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 LSDA/6-31G**
 hartrees
Energy at 0K-283.831661
Energy at 298.15K-283.837939
Nuclear repulsion energy224.754815
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 LSDA/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 3226 3165 0.95      
2 A 3186 3127 0.75      
3 A 3110 3052 1.65      
4 A 3068 3010 1.89      
5 A 2997 2941 6.28      
6 A 1641 1610 41.10      
7 A 1519 1491 34.54      
8 A 1434 1407 7.45      
9 A 1413 1387 11.01      
10 A 1361 1335 5.62      
11 A 1358 1333 5.64      
12 A 1276 1252 15.22      
13 A 1183 1161 12.10      
14 A 1035 1016 1.01      
15 A 1018 999 7.16      
16 A 1010 992 8.69      
17 A 999 981 14.43      
18 A 934 917 1.16      
19 A 910 893 12.72      
20 A 864 847 4.90      
21 A 773 759 31.81      
22 A 666 654 0.25      
23 A 646 634 2.56      
24 A 637 625 0.43      
25 A 325 319 2.28      
26 A 247 242 2.20      
27 A 75 73 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 18455.1 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 18110.0 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 LSDA/6-31G**
ABC
0.30952 0.12043 0.08814

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.087 0.017 0.000
H2 2.451 -0.527 -0.888
H3 2.535 1.021 -0.001
H4 2.451 -0.526 0.888
C5 0.620 0.113 -0.000
O6 -0.062 -1.045 0.000
N7 -1.416 -0.795 -0.000
C8 -1.521 0.514 -0.000
H9 -2.518 0.961 -0.000
C10 -0.264 1.152 -0.000
H11 -0.040 2.217 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10311.09931.10311.46982.39703.59583.64264.70042.61093.0601
H21.10311.78621.77612.13322.71543.97694.20195.26253.31393.8111
H31.09931.78621.78622.11853.31804.34774.08755.05242.80172.8388
H41.10311.77611.78622.13322.71583.97724.20185.26243.31363.8106
C51.46982.13322.11852.13321.34402.22962.17913.25051.36452.2049
O62.39702.71543.31802.71581.34401.37682.13553.17072.20613.2616
N73.59583.97694.34773.97722.22961.37681.31332.07292.26203.3109
C83.64264.20194.08754.20182.17912.13551.31331.09181.40982.2567
H94.70045.26255.05245.26243.25053.17072.07291.09182.26152.7774
C102.61093.31392.80173.31361.36452.20612.26201.40982.26151.0880
H113.06013.81112.83883.81062.20493.26163.31092.25672.77741.0880

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 116.758 C1 C5 C10 134.167
H2 C1 H3 108.394 H2 C1 H4 107.230
H2 C1 C5 111.218 H3 C1 H4 108.393
H3 C1 C5 110.266 H4 C1 C5 111.219
C5 O6 N7 110.053 C5 C10 C8 103.512
C5 C10 H11 127.708 O6 C5 C10 109.076
O6 N7 C8 105.069 N7 C8 H9 118.776
N7 C8 C10 112.290 C8 C10 H11 128.780
H9 C8 C10 128.934
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.502      
2 H 0.182      
3 H 0.167      
4 H 0.182      
5 C 0.337      
6 O -0.302      
7 N -0.166      
8 C 0.038      
9 H 0.148      
10 C -0.215      
11 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.024 2.437 0.000 3.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.877 -3.457 0.000
y -3.457 -34.901 -0.000
z 0.000 -0.000 -35.552
Traceless
 xyz
x 4.350 -3.457 0.000
y -3.457 -1.686 -0.000
z 0.000 -0.000 -2.663
Polar
3z2-r2-5.326
x2-y24.024
xy-3.457
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.660 -0.389 0.000
y -0.389 7.310 0.000
z 0.000 0.000 3.978


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000