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

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-285.125496
Energy at 298.15K-285.131761
Nuclear repulsion energy222.958936
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 PBEPBE/cc-pVTZ
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 3201 3179 0.45      
2 A 3160 3138 2.80      
3 A 3073 3052 6.15      
4 A 3031 3010 6.21      
5 A 2977 2956 12.90      
6 A 1591 1580 36.99      
7 A 1467 1456 38.27      
8 A 1436 1426 10.10      
9 A 1422 1412 7.95      
10 A 1361 1351 0.51      
11 A 1328 1319 6.00      
12 A 1222 1214 16.55      
13 A 1171 1163 9.43      
14 A 1024 1017 4.97      
15 A 1024 1016 2.95      
16 A 991 984 8.34      
17 A 962 955 1.13      
18 A 909 902 9.98      
19 A 866 860 4.90      
20 A 852 846 12.04      
21 A 771 766 36.43      
22 A 647 643 0.21      
23 A 633 628 1.50      
24 A 626 621 1.63      
25 A 326 324 1.96      
26 A 243 242 2.20      
27 A 87 87 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 18198.7 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 18073.2 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 PBEPBE/cc-pVTZ
ABC
0.30611 0.11810 0.08661

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.108 0.017 0.000
H2 2.468 -0.525 -0.886
H3 2.550 1.019 -0.000
H4 2.468 -0.524 0.887
C5 0.625 0.111 -0.000
O6 -0.062 -1.060 0.000
N7 -1.444 -0.790 0.000
C8 -1.530 0.524 -0.000
H9 -2.518 0.980 -0.000
C10 -0.259 1.155 -0.000
H11 -0.031 2.214 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09941.09571.09941.48542.42163.64203.67324.72462.62583.0665
H21.09941.78201.77282.14142.73324.02004.22785.28293.32313.8125
H31.09571.78201.78202.12853.33794.38464.11025.06792.81192.8443
H41.09941.77281.78202.14152.73354.02014.22775.28283.32293.8121
C51.48542.14142.12852.14151.35692.25662.19483.26091.36822.2037
O62.42162.73323.33792.73351.35691.40852.16023.19262.22343.2742
N73.64204.02004.38464.02012.25661.40851.31712.07012.27773.3199
C83.67324.22784.11024.22772.19482.16021.31711.08751.41952.2592
H94.72465.28295.06795.28283.26093.19262.07011.08752.26592.7763
C102.62583.32312.81193.32291.36822.22342.27771.41952.26591.0835
H113.06653.81252.84433.81212.20373.27423.31992.25922.77631.0835

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 116.782 C1 C5 C10 133.860
H2 C1 H3 108.547 H2 C1 H4 107.457
H2 C1 C5 111.001 H3 C1 H4 108.546
H3 C1 C5 110.191 H4 C1 C5 111.002
C5 O6 N7 109.362 C5 C10 C8 103.860
C5 C10 H11 127.637 O6 C5 C10 109.358
O6 N7 C8 104.802 N7 C8 H9 118.525
N7 C8 C10 112.618 C8 C10 H11 128.503
H9 C8 C10 128.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.282      
2 H 0.117      
3 H 0.107      
4 H 0.117      
5 C 0.184      
6 O -0.089      
7 N -0.082      
8 C -0.055      
9 H 0.107      
10 C -0.237      
11 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.955 2.417 -0.000 3.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.628 -3.497 0.000
y -3.497 -35.556 0.000
z 0.000 0.000 -36.204
Traceless
 xyz
x 4.252 -3.497 0.000
y -3.497 -1.640 0.000
z 0.000 0.000 -2.612
Polar
3z2-r2-5.224
x2-y23.928
xy-3.497
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.765 -0.360 0.000
y -0.360 8.174 -0.000
z 0.000 -0.000 5.198


<r2> (average value of r2) Å2
<r2> 136.730
(<r2>)1/2 11.693