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

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-285.191500
Energy at 298.15K-285.197905
Nuclear repulsion energy221.730325
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 mPW1PW91/6-31G
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 3353 3174 0.24      
2 A 3326 3148 1.79      
3 A 3196 3025 7.09      
4 A 3161 2992 6.18      
5 A 3086 2921 10.09      
6 A 1672 1583 42.29      
7 A 1535 1453 16.95      
8 A 1528 1446 30.33      
9 A 1525 1444 12.50      
10 A 1473 1394 3.08      
11 A 1382 1308 7.31      
12 A 1271 1203 22.06      
13 A 1247 1181 14.24      
14 A 1113 1053 8.89      
15 A 1088 1030 5.53      
16 A 1051 994 3.48      
17 A 989 936 5.36      
18 A 949 898 6.39      
19 A 946 895 4.03      
20 A 848 803 48.95      
21 A 826 782 13.49      
22 A 671 635 0.34      
23 A 659 624 0.93      
24 A 629 595 1.40      
25 A 335 317 3.20      
26 A 254 240 3.53      
27 A 91 86 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 19099.9 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 18080.0 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 mPW1PW91/6-31G
ABC
0.30442 0.11659 0.08564

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.115 0.016 -0.000
H2 2.470 -0.525 -0.881
H3 2.560 1.011 -0.001
H4 2.470 -0.524 0.882
C5 0.638 0.112 -0.000
O6 -0.060 -1.072 0.000
N7 -1.475 -0.784 -0.000
C8 -1.533 0.537 -0.000
H9 -2.500 1.012 -0.000
C10 -0.249 1.150 0.000
H11 -0.027 2.202 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09371.09041.09371.47982.43213.67853.68504.72122.62183.0608
H21.09371.77361.76362.13022.73444.05094.23425.27643.31313.8017
H31.09041.77361.77362.12203.34774.41714.12075.06022.81242.8482
H41.09371.76361.77362.13022.73484.05124.23415.27613.31263.8009
C51.47982.13022.12202.13021.37452.29582.21253.26481.36582.1939
O62.43212.73443.34772.73481.37451.44432.18123.20872.23043.2746
N73.67854.05094.41714.05122.29581.44431.32232.06782.29073.3194
C83.68504.23424.12074.23412.21252.18121.32231.07741.42332.2455
H94.72125.27645.06025.27613.26483.20872.06781.07742.25542.7446
C102.62183.31312.81243.31261.36582.23042.29071.42332.25541.0752
H113.06083.80172.84823.80092.19393.27463.31942.24552.74461.0752

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 116.827 C1 C5 C10 134.214
H2 C1 H3 108.596 H2 C1 H4 107.468
H2 C1 C5 110.848 H3 C1 H4 108.597
H3 C1 C5 110.390 H4 C1 C5 110.847
C5 O6 N7 109.044 C5 C10 C8 104.967
C5 C10 H11 127.594 O6 C5 C10 108.959
O6 N7 C8 103.990 N7 C8 H9 118.666
N7 C8 C10 113.041 C8 C10 H11 127.439
H9 C8 C10 128.293
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.531      
2 H 0.211      
3 H 0.191      
4 H 0.211      
5 C 0.316      
6 O -0.440      
7 N -0.132      
8 C -0.022      
9 H 0.218      
10 C -0.219      
11 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.052 3.208 0.000 3.808
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.661 -4.053 -0.000
y -4.053 -36.145 0.000
z -0.000 0.000 -36.013
Traceless
 xyz
x 5.418 -4.053 -0.000
y -4.053 -2.808 0.000
z -0.000 0.000 -2.609
Polar
3z2-r2-5.218
x2-y25.484
xy-4.053
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.205 -0.392 0.000
y -0.392 7.136 0.000
z 0.000 0.000 3.596


<r2> (average value of r2) Å2
<r2> 137.684
(<r2>)1/2 11.734