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

using model chemistry: PBEPBE/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-285.043222
Energy at 298.15K-285.049559
Nuclear repulsion energy222.222545
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/6-31G(2df,p)
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 3218 3185 0.46      
2 A 3192 3159 0.23      
3 A 3088 3056 4.32      
4 A 3049 3017 8.83      
5 A 2984 2954 14.19      
6 A 1562 1546 23.65      
7 A 1453 1438 3.94      
8 A 1442 1427 21.69      
9 A 1432 1417 6.53      
10 A 1398 1383 26.44      
11 A 1353 1340 0.41      
12 A 1254 1241 1.50      
13 A 1122 1110 13.83      
14 A 1050 1039 9.35      
15 A 1025 1014 2.96      
16 A 1001 991 2.72      
17 A 950 940 1.63      
18 A 917 908 1.37      
19 A 871 862 19.89      
20 A 818 809 0.42      
21 A 764 756 35.60      
22 A 650 643 0.42      
23 A 648 641 4.31      
24 A 601 595 2.71      
25 A 323 320 6.08      
26 A 267 264 4.59      
27 A 130 129 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18280.2 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 18091.9 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/6-31G(2df,p)
ABC
0.30271 0.11664 0.08555

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.135 0.022 0.000
H2 2.534 0.539 0.888
H3 2.505 -1.013 0.000
H4 2.534 0.539 -0.888
C5 -1.488 0.578 0.000
O6 -1.386 -0.767 0.000
N7 -0.028 -1.115 -0.000
C8 0.639 0.031 0.000
C9 -0.250 1.152 -0.000
H10 -0.002 2.209 -0.000
H11 -2.502 0.972 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10231.09911.10233.66513.60802.44391.49612.63873.05724.7328
H21.10231.78821.77624.11874.22603.17652.15352.98553.16345.1316
H31.09911.78821.78824.29783.89822.53512.13833.50334.08185.3854
H41.10231.77621.78824.11874.22593.17632.15352.98553.16335.1316
C53.66514.11874.29784.11871.34932.23542.19571.36462.20631.0876
O63.60804.22603.89824.22591.34931.40132.17642.23033.28222.0662
N72.44393.17652.53513.17632.23541.40131.32652.27783.32403.2361
C81.49612.15352.13832.15352.19572.17641.32651.43012.26973.2782
C92.63872.98553.50332.98551.36462.23032.27781.43011.08562.2592
H103.05723.16344.08183.16332.20633.28223.32402.26971.08562.7894
H114.73285.13165.38545.13161.08762.06623.23613.27822.25922.7894

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 119.838 C1 C8 C9 128.768
H2 C1 H3 108.644 H2 C1 H4 107.359
H2 C1 C8 111.044 H3 C1 H4 108.643
H3 C1 C8 110.018 H4 C1 C8 111.043
C5 O6 N7 108.707 C5 C9 C8 103.545
C5 C9 H10 128.076 O6 C5 C9 110.532
O6 C5 H11 115.548 O6 N7 C8 105.823
N7 C8 C9 111.394 C8 C9 H10 128.379
C9 C5 H11 133.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.532      
2 H 0.150      
3 H 0.161      
4 H 0.150      
5 C 0.071      
6 O -0.135      
7 N -0.215      
8 C 0.410      
9 C -0.332      
10 H 0.121      
11 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.462 2.683 0.000 2.723
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.215 -1.686 -0.000
y -1.686 -35.684 -0.001
z -0.000 -0.001 -35.438
Traceless
 xyz
x 6.346 -1.686 -0.000
y -1.686 -3.357 -0.001
z -0.000 -0.001 -2.989
Polar
3z2-r2-5.977
x2-y26.469
xy-1.686
xz-0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.806 -0.223 -0.000
y -0.223 7.593 0.000
z -0.000 0.000 4.426


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