return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-283.854559
Energy at 298.15K-283.860858
Nuclear repulsion energy224.500609
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/aug-cc-pVDZ
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 3217 3181 1.26      
2 A 3177 3142 0.13      
3 A 3099 3064 1.52      
4 A 3057 3022 1.29      
5 A 2983 2950 6.98      
6 A 1629 1611 45.97      
7 A 1506 1489 36.64      
8 A 1397 1381 6.81      
9 A 1372 1356 10.58      
10 A 1342 1327 6.10      
11 A 1328 1313 6.62      
12 A 1261 1247 16.53      
13 A 1162 1149 12.55      
14 A 1020 1009 1.34      
15 A 1004 993 9.66      
16 A 995 984 3.61      
17 A 982 971 13.00      
18 A 925 915 1.67      
19 A 900 890 12.97      
20 A 855 846 6.16      
21 A 757 748 42.14      
22 A 665 657 0.20      
23 A 644 636 2.52      
24 A 636 629 0.14      
25 A 325 322 2.35      
26 A 246 244 2.55      
27 A 87 86 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 18285.7 cm-1
Scaled (by 0.9887) Zero Point Vibrational Energy (zpe) 18079.0 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/aug-cc-pVDZ
ABC
0.30907 0.12014 0.08796

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.089 0.017 0.000
H2 2.453 -0.528 -0.893
H3 2.531 1.029 -0.000
H4 2.453 -0.527 0.893
C5 0.622 0.112 -0.000
O6 -0.062 -1.046 0.000
N7 -1.415 -0.795 -0.000
C8 -1.525 0.514 -0.000
H9 -2.528 0.958 -0.000
C10 -0.264 1.152 -0.000
H11 -0.039 2.221 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10741.10351.10741.46962.39923.59743.64864.71212.61283.0635
H21.10741.79531.78572.13462.71853.97924.20865.27433.31723.8162
H31.10351.79531.79532.11773.32054.34754.08925.06012.79852.8335
H41.10741.78571.79532.13472.71893.97954.20865.27423.31693.8157
C51.46962.13462.11772.13471.34422.23032.18543.26241.36742.2111
O62.39922.71853.32052.71891.34421.37672.13923.17762.20713.2670
N73.59743.97924.34753.97952.23031.37671.31392.07612.26183.3155
C83.64864.20864.08924.20862.18542.13921.31391.09641.41322.2636
H94.71215.27435.06015.27423.26243.17762.07611.09642.27222.7918
C102.61283.31722.79853.31691.36742.20712.26181.41322.27221.0927
H113.06353.81622.83353.81572.21113.26703.31552.26362.79181.0927

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 116.929 C1 C5 C10 134.105
H2 C1 H3 108.584 H2 C1 H4 107.466
H2 C1 C5 111.079 H3 C1 H4 108.583
H3 C1 C5 109.957 H4 C1 C5 111.080
C5 O6 N7 110.105 C5 C10 C8 103.608
C5 C10 H11 127.649 O6 C5 C10 108.966
O6 N7 C8 105.299 N7 C8 H9 118.657
N7 C8 C10 112.022 C8 C10 H11 128.743
H9 C8 C10 129.321
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.580      
2 H -0.074      
3 H -0.140      
4 H -0.074      
5 C -0.122      
6 O -0.426      
7 N -0.198      
8 C 0.229      
9 H -0.366      
10 C 1.120      
11 H -0.529      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.090 2.580 0.000 3.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.822 -3.734 0.000
y -3.734 -35.988 -0.000
z 0.000 -0.000 -36.580
Traceless
 xyz
x 4.462 -3.734 0.000
y -3.734 -1.787 -0.000
z 0.000 -0.000 -2.675
Polar
3z2-r2-5.350
x2-y24.166
xy-3.734
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.378 -0.234 0.001
y -0.234 8.818 0.001
z 0.001 0.001 6.122


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